![\"\"](\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/\u540d\u79f0\u672a\u8a2d\u5b9a.jpg\")
<\/figure>\n<\/div>\n\n\nKey elements of the node<\/h3>\n\n\n\n\n- Kubelet<\/strong>: \uac01 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \uc5d0\uc774\uc804\ud2b8\ub85c\uc11c, \ub178\ub4dc\uc5d0\uc11c \ucee8\ud14c\uc774\ub108\uac00 \uc62c\ubc14\ub974\uac8c \uc2e4\ud589\ub418\ub294\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.
Kubelet\uc740 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84\uc640 \ud1b5\uc2e0\ud558\uba70, \ud30c\ub4dc\uc758 \uc0c1\ud0dc \uc815\ubcf4\ub97c \ubcf4\uace0\ud558\uace0 \uc0c8\ub85c\uc6b4 \ud30c\ub4dc \ud560\ub2f9\uc744 \ubc1b\uc544 \ud574\ub2f9 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n- Kube Proxy<\/strong>: \uac01 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc\ub85c\uc11c, \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4 \uac1c\ub150\uc758 \uc2e4\uc81c \uad6c\ud604\uc744 \ub2f4\ub2f9\ud569\ub2c8\ub2e4.
Kube Proxy\ub294 \ub124\ud2b8\uc6cc\ud06c \ud2b8\ub798\ud53d\uc744 \uc801\uc808\ud55c \ud30c\ub4dc\ub85c \ub77c\uc6b0\ud305\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/li>\n\n\n\n- \ucee8\ud14c\uc774\ub108 \ub7f0\ud0c0\uc784<\/strong>: \ub178\ub4dc\uc5d0\uc11c \ucee8\ud14c\uc774\ub108\ub97c \uc2e4\ud589\ud558\uae30 \uc704\ud55c \uc18c\ud504\ud2b8\uc6e8\uc5b4. \uc608\ub85c Docker, containerd, CRI-O \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n
![\"\"](\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/eks-migrate-nodegroups.png\")
<\/figure>\n\n\n\nNode type<\/h3>\n\n\n\n\n- \ub9c8\uc2a4\ud130 \ub178\ub4dc (\uc81c\uc5b4 \ud50c\ub808\uc778 \ub178\ub4dc)<\/strong>: \ud074\ub7ec\uc2a4\ud130\uc758 \uad00\ub9ac\uc640 \uc870\uc815\uc744 \ub2f4\ub2f9\ud558\ub294 \ub178\ub4dc\uc785\ub2c8\ub2e4.
\uc5ec\uae30\uc5d0\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84, etcd, \uc2a4\ucf00\uc904\ub7ec, \ucee8\ud2b8\ub864\ub7ec \ub9e4\ub2c8\uc800 \ub4f1\uc758 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n- \uc6cc\ucee4 \ub178\ub4dc<\/strong>: \uc2e4\uc81c\ub85c \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ucee8\ud14c\uc774\ub108\uac00 \uc2e4\ud589\ub418\ub294 \ub178\ub4dc\uc785\ub2c8\ub2e4.
\uc6cc\ucee4 \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc2e4\uc81c \uc791\uc5c5 \ubd80\ud558\ub97c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\nNode management<\/h3>\n\n\n\n\nkubectl get nodes<\/code>: \ud604\uc7ac \ud074\ub7ec\uc2a4\ud130\uc758 \ubaa8\ub4e0 \ub178\ub4dc\uc758 \uc0c1\ud0dc\uc640 \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\nkubectl describe node [\ub178\ub4dc \uc774\ub984]<\/code>: \ud2b9\uc815 \ub178\ub4dc\uc758 \uc790\uc138\ud55c \uc815\ubcf4\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n\ub178\ub4dc\ub294 \ubb3c\ub9ac\uc801\uc778 \uc11c\ubc84\ub098 \ud074\ub77c\uc6b0\ub4dc\uc758 VM, \ubca0\uc5b4\uba54\ud0c8 \uc11c\ubc84 \ubaa8\ub450 \uac00\ub2a5\ud558\uba70, \ub178\ub4dc\uc758 \ud5ec\uc2a4 \uccb4\ud06c\ub294 Kubelet\uc774 \uc8fc\uae30\uc801\uc73c\ub85c \uc218\ud589\ud569\ub2c8\ub2e4.
Kubelet\uc774 \uc77c\uc815 \uc2dc\uac04 \ub3d9\uc548 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84\uc640 \ud1b5\uc2e0\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 \ub178\ub4dc\ub294 NotReady<\/code> \uc0c1\ud0dc\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube control?<\/h2>\n\n\n\nConcept of kubelet<\/h3>\n\n\n\n
kubectl<\/code> (\ubc1c\uc74c: “kube control” \ub610\ub294 “kube cuddle”)\ub294 Kubernetes \ud074\ub7ec\uc2a4\ud130\uc640 \ud1b5\uc2e0\ud558\uace0 \uad00\ub9ac\ud558\uae30 \uc704\ud55c \ucee4\ub9e8\ub4dc\ub77c\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uc0ac\uc6a9\uc790\uac00 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc81c\uc5b4\ud558\uace0, \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\/\uc218\uc815\/\uc0ad\uc81c\ud558\uba70, \ub514\ubc84\uae45\uacfc \ub85c\uae45 \ub4f1 \ub2e4\uc591\ud55c \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\uac8c \ub3c4\uc640\uc90d\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
\ub2e4\uc74c\uc740 kubectl<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5 \ubc0f \uc0ac\uc6a9 \uc608\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \ub9ac\uc18c\uc2a4 \uad00\ub9ac<\/strong>: \ud30c\ub4dc, \uc11c\ube44\uc2a4, \ub514\ud50c\ub85c\uc774\uba3c\ud2b8 \ub4f1\uc758 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131, \uc5c5\ub370\uc774\ud2b8, \uc0ad\uc81c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl create<\/code>, kubectl delete<\/code>, kubectl apply<\/code>, kubectl edit<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc815\ubcf4 \uc870\ud68c<\/strong>: \ud074\ub7ec\uc2a4\ud130\uc640 \uad00\ub828\ub41c \ub2e4\uc591\ud55c \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl get<\/code>, kubectl describe<\/code>, kubectl logs<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub514\ubc84\uae45 \ubc0f \ubb38\uc81c \ud574\uacb0<\/strong>: \uc2e4\ud589 \uc911\uc778 \ud30c\ub4dc\uc640 \uad00\ub828\ub41c \ubb38\uc81c\ub97c \uc9c4\ub2e8\ud558\uac70\ub098 \ud574\uacb0\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl logs<\/code>, kubectl exec<\/code>, kubectl attach<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ud074\ub7ec\uc2a4\ud130 \uad00\ub9ac<\/strong>: \ud074\ub7ec\uc2a4\ud130 \uc124\uc815\uacfc \uad00\ub828\ub41c \uc791\uc5c5\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl config<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub9ac\uc18c\uc2a4 \ud30c\uc77c \uac80\uc99d<\/strong>: YAML \ub610\ub294 JSON \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl apply --dry-run=client -f [file-name]<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc2a4\ucf00\uc77c\ub9c1 \ubc0f \uc5c5\ub370\uc774\ud2b8<\/strong>: \uc2e4\ud589 \uc911\uc778 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ubcf5\uc81c \uc218\ub97c \uc870\uc815\ud558\uac70\ub098 \uc0c8 \ubc84\uc804\uc73c\ub85c \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl scale<\/code>, kubectl rollout<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n\ub610\ud55c, kubectl<\/code>\uc758 \uc790\ub3d9 \uc644\uc131, \ubcc4\uce6d \uc124\uc815 \ub4f1 \ub2e4\uc591\ud55c \ud50c\ub7ec\uadf8\uc778\uacfc \ud655\uc7a5 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\nkubectl<\/code> \uc0ac\uc6a9 \uc2dc\uc5d0\ub294 \ub300\ubd80\ubd84\uc758 \uba85\ub839\uc5b4\uac00 kubectl [\uba85\ub839] [\ud0c0\uc785] [\uc774\ub984] [\ud50c\ub798\uadf8]<\/code>\uc758 \ud615\uc2dd\uc744 \ub530\ub985\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ubaa8\ub4e0 \ud30c\ub4dc\ub97c \uc870\ud68c\ud558\ub824\uba74 kubectl get pods<\/code>\ub97c \uc0ac\uc6a9\ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n\ucfe0\ubc84\ub124\ud2f0\uc2a4\uc758 \uc8fc\uc694 \ucef4\ud3ec\ub10c\ud2b8 \ubc0f \ub9ac\uc18c\uc2a4\uc640 \uc0c1\ud638 \uc791\uc6a9\ud560 \ub54c kubectl<\/code>\uc740 \ud544\uc218 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uacf5\uc2dd \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ubb38\uc11c\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 kubectl<\/code> \ucca0\uc800\ud55c \uac00\uc774\ub4dc\uc640 \ud568\uaed8 \ub9ce\uc740 \uc2e4\uc2b5\uc744 \ud1b5\ud574 \ud6a8\uacfc\uc801\uc73c\ub85c \ud559\uc2b5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube-proxy?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uac01 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc\uc785\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4 \ucd94\uc0c1\ud654\uc758 \uc77c\ubd80\ub97c \uad6c\ud604\ud558\ub294\ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
kube-proxy<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5\uacfc \uc5ed\ud560\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \uc11c\ube44\uc2a4 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4\uc758 IP \uc8fc\uc18c\uc640 \ud3ec\ud2b8\uc5d0 \ub300\ud55c \ud2b8\ub798\ud53d\uc744 \uc801\uc808\ud55c \ud30c\ub4dc\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4.
\uc989, \uc11c\ube44\uc2a4\uc758 \ud074\ub7ec\uc2a4\ud130 IP\ub85c \ub4e4\uc5b4\uc624\ub294 \ud2b8\ub798\ud53d\uc744 \uc2e4\uc81c\ub85c \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud558\ub294 \ud30c\ub4dc\uc758 IP\ub85c \ub77c\uc6b0\ud305\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub85c\ub4dc \ubc38\ub7f0\uc2f1<\/strong>:\n
\n- \ud558\ub098\uc758 \uc11c\ube44\uc2a4\ub294 \uc5ec\ub7ec \uac1c\uc758 \ud30c\ub4dc\uc5d0\uc11c \uc81c\uacf5\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \ub300\ud55c \uc694\uccad\uc744 \uc774\ub7ec\ud55c \ud30c\ub4dc\ub4e4 \uc0ac\uc774\uc5d0 \ub85c\ub4dc \ubc38\ub7f0\uc2f1\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc138\uc158 \uc5b4\ud53c\ub2c8\ud2f0<\/strong>:\n
\n- \uc77c\ubd80 \uc11c\ube44\uc2a4\ub294 \uc138\uc158 \uae30\ubc18\uc758 \uc5b4\ud53c\ub2c8\ud2f0\ub97c \ud544\uc694\ub85c \ud569\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc774\ub7ec\ud55c \uc124\uc815\uc744 \uc9c0\uc6d0\ud558\uc5ec \ud2b9\uc815 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc744
\ud56d\uc0c1 \ub3d9\uc77c\ud55c \ud30c\ub4dc\ub85c \ub77c\uc6b0\ud305\ud558\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc \ubaa8\ub4dc<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc5ec\ub7ec \ub124\ud2b8\uc6cc\ud06c \ubaa8\ub4dc\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ub450 \uac00\uc9c0 \ubaa8\ub4dc\ub294 iptables<\/code> \ubaa8\ub4dc\uc640 ipvs<\/code> \ubaa8\ub4dc\uc785\ub2c8\ub2e4. iptables<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 iptables\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud2b8\ub798\ud53d\uc744 \ub77c\uc6b0\ud305\ud558\ub294 \ubc18\uba74, ipvs<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 IP Virtual Server\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub85c\ub4dc \ubc38\ub7f0\uc2f1 \ubc0f \ud2b8\ub798\ud53d \ub77c\uc6b0\ud305\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc11c\ube44\uc2a4 \ud5ec\uc2a4 \uccb4\ud06c<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \uc5f0\uacb0\ub41c \ud30c\ub4dc\uc758 \uc0c1\ud0dc\ub97c \uacc4\uc18d \ud655\uc778\ud569\ub2c8\ub2e4.
\ub9cc\uc57d \ud30c\ub4dc\uac00 \uc885\ub8cc\ub418\uac70\ub098 \uac74\uac15\ud558\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\ub85c \uac04\uc8fc\ub418\uba74, \ud574\ub2f9 \ud30c\ub4dc\ub85c\uc758 \ud2b8\ub798\ud53d \uc804\ub2ec\uc744 \uc911\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \uc11c\ube44\uc2a4\uc758 \uc2e0\ub8b0\uc131\uacfc \ud6a8\uc728\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uc911\uc694\ud55c \uad6c\uc131 \uc694\uc18c\uc785\ub2c8\ub2e4.
\uadf8\ub7ec\ub098 \ucd5c\uadfc\uc758 \ub124\ud2b8\uc6cc\ud06c \uc194\ub8e8\uc158, \ud2b9\ud788 \uc11c\ub4dc\ud30c\ud2f0 CNI \ud50c\ub7ec\uadf8\uc778\uc5d0\uc11c\ub294 kube-proxy<\/code>\uc758 \uae30\ub2a5\uc744 \ub300\uccb4\ud558\uac70\ub098 \ud655\uc7a5\ud558\ub294 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\n![\"\"](\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/\u540d\u79f0\u672a\u8a2d\u5b9a-1-1.jpg\")
<\/figure>\n<\/div>\n\n\n<\/div>\n\n\n\nWhat is CNI Pluggin?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
CNI (Container Network Interface)\ub294 \ucee8\ud14c\uc774\ub108 \uc2e4\ud589 \ud658\uacbd\uc744 \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4 \uaddc\uaca9\uc785\ub2c8\ub2e4.
CNI\ub294 \ucee8\ud14c\uc774\ub108\ub97c \uc2e4\ud589\ud558\uac70\ub098 \uc911\uc9c0\ud560 \ub54c \ub124\ud2b8\uc6cc\ud06c \ub9ac\uc18c\uc2a4\ub97c \ud560\ub2f9\ud558\uace0 \ud68c\uc218\ud558\ub294 \uae30\ub2a5\uc744 \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4\ub294 CNI\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud30c\ub4dc \ub124\ud2b8\uc6cc\ud0b9\uc744 \uad6c\uc131\ud569\ub2c8\ub2e4. \uc989, \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \ud30c\ub4dc\uac00 \uc0dd\uc131\ub420 \ub54c\ub9c8\ub2e4 CNI \ud50c\ub7ec\uadf8\uc778\uc774 \ud638\ucd9c\ub418\uc5b4 \ud574\ub2f9 \ud30c\ub4dc\ub97c \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4, IP \uc8fc\uc18c \ubc0f \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
Features<\/h3>\n\n\n\n
CNI \ud50c\ub7ec\uadf8\uc778\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uae30\ub2a5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- \ud50c\ub7ec\uadf8\uc778 \uccb4\uc778<\/strong>:\n
\n- \uc5ec\ub7ec CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc5f0\uacb0\ud558\uc5ec \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ud558\ub098\uc758 \ud50c\ub7ec\uadf8\uc778\uc774 \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0dd\uc131\ud558\uace0 \ub2e4\ub978 \ud50c\ub7ec\uadf8\uc778\uc774 \uadf8 \uc778\ud130\ud398\uc774\uc2a4\uc5d0 IPAM (IP \uc8fc\uc18c \uad00\ub9ac)\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - \ub2e4\uc591\ud55c \uad6c\ud604<\/strong>:\n
\n- CNI \uba85\uc138\uc5d0\ub294 \ub2e4\uc591\ud55c \uad6c\ud604\uc774 \uac00\ub2a5\ud558\uba70, \uc5ec\ub7ec \uacf5\uae09\uc5c5\uccb4\uc640 \ucee4\ubba4\ub2c8\ud2f0\uc5d0\uc11c \ub2e4\uc591\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uac1c\ubc1c\ud588\uc2b5\ub2c8\ub2e4.
\uc608\ub85c, Calico, Weave, Flannel, Cilium \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - IPAM<\/strong>:\n
\n- IP \uc8fc\uc18c \ud560\ub2f9\uacfc \uad00\ub9ac\ub97c \uc704\ud55c \ubcc4\ub3c4\uc758 \uc11c\ube0c\ud50c\ub7ec\uadf8\uc778 \uaddc\uaca9\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac \ub610\ub294 \ub124\ud2b8\uc6cc\ud06c \ud3f4\ub9ac\uc2dc\ub97c \uc9c0\uc6d0\ud558\uc5ec \ud30c\ub4dc \uac04\uc758 \ud2b8\ub798\ud53d\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9, \uc608\ub97c \ub4e4\uba74 DPDK\ub098 SR-IOV, \ubcf5\uc7a1\ud55c \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uc11c\ub4dc\ud30c\ud2f0 \uc5f0\uacc4<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uae30\uc874\uc758 \uc628\ud504\ub808\ubbf8\uc2a4 \ub610\ub294 \ud074\ub77c\uc6b0\ub4dc \ub124\ud2b8\uc6cc\ud0b9 \uc194\ub8e8\uc158\uacfc \ud1b5\ud569\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc124\uc815\ud560 \ub54c, \uc6d0\ud558\ub294 CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc120\ud0dd\ud558\uace0 \uc124\uce58\ud574\uc57c \ud569\ub2c8\ub2e4.
\uc120\ud0dd\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ud074\ub7ec\uc2a4\ud130\uc758 \ub124\ud2b8\uc6cc\ud06c \uc131\ub2a5, \uae30\ub2a5 \ubc0f \uad6c\uc131 \ubc29\uc2dd\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\n\n\n\n
<\/div>\n\n\n\nAdditional<\/h2>\n\n\n\nkubectl apply –dry-run=client -f [file-name]<\/h3>\n\n\n\n
kubectl apply --dry-run=client -f [file-name]<\/code> \uba85\ub839\uc5b4\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\uc758 \ubcc0\uacbd\uc0ac\ud56d\uc744 \uc2e4\uc81c\ub85c \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0
\uac80\uc99d\ub9cc \uc218\ud589\ud558\ub294 \uba85\ub839\uc5b4\uc785\ub2c8\ub2e4. \uc774 \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud558\uba74 \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \ubb38\ubc95 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n\uac01 \ubd80\ubd84\uc758 \uc0c1\uc138 \uc124\uba85\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- kubectl apply<\/strong>:
kubectl apply<\/code>\ub294 \uc120\uc5b8\uc801 \ubc29\uc2dd\uc73c\ub85c \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\ud558\uac70\ub098 \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.
\uc989, \uc8fc\uc5b4\uc9c4 \uad6c\uc131 \ud30c\uc77c\uc758 \uc0c1\ud0dc\ub97c \ud074\ub7ec\uc2a4\ud130\uc758 \ud604\uc7ac \uc0c1\ud0dc\uc640 \ub3d9\uae30\ud654\ud558\ub824\uace0 \uc2dc\ub3c4\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n- –dry-run=client<\/strong>: \uc774 \ud50c\ub798\uadf8\ub294 \uc2e4\uc81c\ub85c \ub9ac\uc18c\uc2a4\ub97c \ud074\ub7ec\uc2a4\ud130\uc5d0 \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0 \ub85c\uceec\uc5d0\uc11c\ub9cc \uac80\uc99d\ud569\ub2c8\ub2e4.
client<\/code>\ub294 \uac80\uc99d\uc744 \ub85c\uceec\uc5d0\uc11c\ub9cc \uc218\ud589\ud558\ub77c\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub85c \uc778\ud574 API \uc11c\ubc84\uc5d0 \uc804\uc1a1\ub418\ub294 \uc694\uccad\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n- -f [file-name]<\/strong>:
-f<\/code> \ud50c\ub798\uadf8\ub294 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc744 \ub2f4\uace0 \uc788\ub294 \ud30c\uc77c\uc744 \uc9c0\uc815\ud569\ub2c8\ub2e4.
[file-name]<\/code> \ubd80\ubd84\uc5d0\ub294 \ud574\ub2f9 \uad6c\uc131 \ud30c\uc77c\uc758 \uacbd\ub85c\ub97c \uc9c0\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n\uc608\ub97c \ub4e4\uc5b4, my-pod.yaml<\/code>\uc774\ub77c\ub294 \ud30c\uc77c\uc774 \uc788\uace0, \uc774 \ud30c\uc77c\uc758 \ub0b4\uc6a9\uc744 \uac80\uc99d\ud558\ub824\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\nkubectl apply --dry-run=client -f my-pod.yaml<\/sub><\/code><\/pre>\n\n\n\n\ub9cc\uc57d \uad6c\uc131 \ud30c\uc77c\uc5d0 \ubb38\ubc95\uc801\uc778 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\uac00 \uc5c6\ub2e4\uba74, \uba85\ub839\uc5b4\ub294 \ud574\ub2f9 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc774 \uc720\ud6a8\ud558\ub2e4\ub294 \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud560 \uac83\uc785\ub2c8\ub2e4.
\ub9cc\uc57d \uc624\ub958\uac00 \uc788\ub2e4\uba74, \ud574\ub2f9 \uc624\ub958\uc640 \uad00\ub828\ub41c \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud574 \uc90d\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
Kubernetes Nodes Concept Kubernetes\uc5d0\uc11c “\ub178\ub4dc”\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uc6cc\ucee4 \uba38\uc2e0\uc744 \ub098\ud0c0\ub0b4\uba70, \uc774\uc804\uc5d0\ub294 “\ubbf8\ub2c8\uc5b8”\uc774\ub77c\uace0\ub3c4 \ubd88\ub838\uc2b5\ub2c8\ub2e4. \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc77c\ubd80\ub85c\uc11c, \ucfe0\ubc84\ub124\ud2f0\uc2a4\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ud30c\ub4dc\uc758 \ucee8\ud14c\uc774\ub108\uac00 \uc2e4\ud589\ub418\ub294 \uacf3\uc785\ub2c8\ub2e4. Minion Kubernetes\uc758 \ucd08\uae30 \ubc84\uc804\uc5d0\uc11c \uc6cc\ucee4 \uba38\uc2e0(\uc989, \ud30c\ub4dc\ub97c \uc2e4\ud589\ud558\ub294 …<\/p>\n","protected":false},"author":1,"featured_media":6246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226,33],"tags":[129],"class_list":["post-4589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-tech-notes","tag-kubernetes"],"_links":{"self":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4589"}],"version-history":[{"count":46,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions"}],"predecessor-version":[{"id":6247,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions\/6247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/media\/6246"}],"wp:attachment":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Kubelet\uc740 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84\uc640 \ud1b5\uc2e0\ud558\uba70, \ud30c\ub4dc\uc758 \uc0c1\ud0dc \uc815\ubcf4\ub97c \ubcf4\uace0\ud558\uace0 \uc0c8\ub85c\uc6b4 \ud30c\ub4dc \ud560\ub2f9\uc744 \ubc1b\uc544 \ud574\ub2f9 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
Kube Proxy\ub294 \ub124\ud2b8\uc6cc\ud06c \ud2b8\ub798\ud53d\uc744 \uc801\uc808\ud55c \ud30c\ub4dc\ub85c \ub77c\uc6b0\ud305\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/li>\n\n\n\n
<\/figure>\n\n\n\nNode type<\/h3>\n\n\n\n\n- \ub9c8\uc2a4\ud130 \ub178\ub4dc (\uc81c\uc5b4 \ud50c\ub808\uc778 \ub178\ub4dc)<\/strong>: \ud074\ub7ec\uc2a4\ud130\uc758 \uad00\ub9ac\uc640 \uc870\uc815\uc744 \ub2f4\ub2f9\ud558\ub294 \ub178\ub4dc\uc785\ub2c8\ub2e4.
\uc5ec\uae30\uc5d0\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84, etcd, \uc2a4\ucf00\uc904\ub7ec, \ucee8\ud2b8\ub864\ub7ec \ub9e4\ub2c8\uc800 \ub4f1\uc758 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n- \uc6cc\ucee4 \ub178\ub4dc<\/strong>: \uc2e4\uc81c\ub85c \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ucee8\ud14c\uc774\ub108\uac00 \uc2e4\ud589\ub418\ub294 \ub178\ub4dc\uc785\ub2c8\ub2e4.
\uc6cc\ucee4 \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc2e4\uc81c \uc791\uc5c5 \ubd80\ud558\ub97c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\nNode management<\/h3>\n\n\n\n\nkubectl get nodes<\/code>: \ud604\uc7ac \ud074\ub7ec\uc2a4\ud130\uc758 \ubaa8\ub4e0 \ub178\ub4dc\uc758 \uc0c1\ud0dc\uc640 \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\nkubectl describe node [\ub178\ub4dc \uc774\ub984]<\/code>: \ud2b9\uc815 \ub178\ub4dc\uc758 \uc790\uc138\ud55c \uc815\ubcf4\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n\ub178\ub4dc\ub294 \ubb3c\ub9ac\uc801\uc778 \uc11c\ubc84\ub098 \ud074\ub77c\uc6b0\ub4dc\uc758 VM, \ubca0\uc5b4\uba54\ud0c8 \uc11c\ubc84 \ubaa8\ub450 \uac00\ub2a5\ud558\uba70, \ub178\ub4dc\uc758 \ud5ec\uc2a4 \uccb4\ud06c\ub294 Kubelet\uc774 \uc8fc\uae30\uc801\uc73c\ub85c \uc218\ud589\ud569\ub2c8\ub2e4.
Kubelet\uc774 \uc77c\uc815 \uc2dc\uac04 \ub3d9\uc548 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84\uc640 \ud1b5\uc2e0\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 \ub178\ub4dc\ub294 NotReady<\/code> \uc0c1\ud0dc\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube control?<\/h2>\n\n\n\nConcept of kubelet<\/h3>\n\n\n\n
kubectl<\/code> (\ubc1c\uc74c: “kube control” \ub610\ub294 “kube cuddle”)\ub294 Kubernetes \ud074\ub7ec\uc2a4\ud130\uc640 \ud1b5\uc2e0\ud558\uace0 \uad00\ub9ac\ud558\uae30 \uc704\ud55c \ucee4\ub9e8\ub4dc\ub77c\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uc0ac\uc6a9\uc790\uac00 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc81c\uc5b4\ud558\uace0, \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\/\uc218\uc815\/\uc0ad\uc81c\ud558\uba70, \ub514\ubc84\uae45\uacfc \ub85c\uae45 \ub4f1 \ub2e4\uc591\ud55c \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\uac8c \ub3c4\uc640\uc90d\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
\ub2e4\uc74c\uc740 kubectl<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5 \ubc0f \uc0ac\uc6a9 \uc608\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \ub9ac\uc18c\uc2a4 \uad00\ub9ac<\/strong>: \ud30c\ub4dc, \uc11c\ube44\uc2a4, \ub514\ud50c\ub85c\uc774\uba3c\ud2b8 \ub4f1\uc758 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131, \uc5c5\ub370\uc774\ud2b8, \uc0ad\uc81c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl create<\/code>, kubectl delete<\/code>, kubectl apply<\/code>, kubectl edit<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc815\ubcf4 \uc870\ud68c<\/strong>: \ud074\ub7ec\uc2a4\ud130\uc640 \uad00\ub828\ub41c \ub2e4\uc591\ud55c \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl get<\/code>, kubectl describe<\/code>, kubectl logs<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub514\ubc84\uae45 \ubc0f \ubb38\uc81c \ud574\uacb0<\/strong>: \uc2e4\ud589 \uc911\uc778 \ud30c\ub4dc\uc640 \uad00\ub828\ub41c \ubb38\uc81c\ub97c \uc9c4\ub2e8\ud558\uac70\ub098 \ud574\uacb0\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl logs<\/code>, kubectl exec<\/code>, kubectl attach<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ud074\ub7ec\uc2a4\ud130 \uad00\ub9ac<\/strong>: \ud074\ub7ec\uc2a4\ud130 \uc124\uc815\uacfc \uad00\ub828\ub41c \uc791\uc5c5\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl config<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub9ac\uc18c\uc2a4 \ud30c\uc77c \uac80\uc99d<\/strong>: YAML \ub610\ub294 JSON \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl apply --dry-run=client -f [file-name]<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc2a4\ucf00\uc77c\ub9c1 \ubc0f \uc5c5\ub370\uc774\ud2b8<\/strong>: \uc2e4\ud589 \uc911\uc778 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ubcf5\uc81c \uc218\ub97c \uc870\uc815\ud558\uac70\ub098 \uc0c8 \ubc84\uc804\uc73c\ub85c \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl scale<\/code>, kubectl rollout<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n\ub610\ud55c, kubectl<\/code>\uc758 \uc790\ub3d9 \uc644\uc131, \ubcc4\uce6d \uc124\uc815 \ub4f1 \ub2e4\uc591\ud55c \ud50c\ub7ec\uadf8\uc778\uacfc \ud655\uc7a5 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\nkubectl<\/code> \uc0ac\uc6a9 \uc2dc\uc5d0\ub294 \ub300\ubd80\ubd84\uc758 \uba85\ub839\uc5b4\uac00 kubectl [\uba85\ub839] [\ud0c0\uc785] [\uc774\ub984] [\ud50c\ub798\uadf8]<\/code>\uc758 \ud615\uc2dd\uc744 \ub530\ub985\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ubaa8\ub4e0 \ud30c\ub4dc\ub97c \uc870\ud68c\ud558\ub824\uba74 kubectl get pods<\/code>\ub97c \uc0ac\uc6a9\ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n\ucfe0\ubc84\ub124\ud2f0\uc2a4\uc758 \uc8fc\uc694 \ucef4\ud3ec\ub10c\ud2b8 \ubc0f \ub9ac\uc18c\uc2a4\uc640 \uc0c1\ud638 \uc791\uc6a9\ud560 \ub54c kubectl<\/code>\uc740 \ud544\uc218 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uacf5\uc2dd \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ubb38\uc11c\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 kubectl<\/code> \ucca0\uc800\ud55c \uac00\uc774\ub4dc\uc640 \ud568\uaed8 \ub9ce\uc740 \uc2e4\uc2b5\uc744 \ud1b5\ud574 \ud6a8\uacfc\uc801\uc73c\ub85c \ud559\uc2b5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube-proxy?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uac01 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc\uc785\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4 \ucd94\uc0c1\ud654\uc758 \uc77c\ubd80\ub97c \uad6c\ud604\ud558\ub294\ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
kube-proxy<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5\uacfc \uc5ed\ud560\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \uc11c\ube44\uc2a4 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4\uc758 IP \uc8fc\uc18c\uc640 \ud3ec\ud2b8\uc5d0 \ub300\ud55c \ud2b8\ub798\ud53d\uc744 \uc801\uc808\ud55c \ud30c\ub4dc\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4.
\uc989, \uc11c\ube44\uc2a4\uc758 \ud074\ub7ec\uc2a4\ud130 IP\ub85c \ub4e4\uc5b4\uc624\ub294 \ud2b8\ub798\ud53d\uc744 \uc2e4\uc81c\ub85c \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud558\ub294 \ud30c\ub4dc\uc758 IP\ub85c \ub77c\uc6b0\ud305\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub85c\ub4dc \ubc38\ub7f0\uc2f1<\/strong>:\n
\n- \ud558\ub098\uc758 \uc11c\ube44\uc2a4\ub294 \uc5ec\ub7ec \uac1c\uc758 \ud30c\ub4dc\uc5d0\uc11c \uc81c\uacf5\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \ub300\ud55c \uc694\uccad\uc744 \uc774\ub7ec\ud55c \ud30c\ub4dc\ub4e4 \uc0ac\uc774\uc5d0 \ub85c\ub4dc \ubc38\ub7f0\uc2f1\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc138\uc158 \uc5b4\ud53c\ub2c8\ud2f0<\/strong>:\n
\n- \uc77c\ubd80 \uc11c\ube44\uc2a4\ub294 \uc138\uc158 \uae30\ubc18\uc758 \uc5b4\ud53c\ub2c8\ud2f0\ub97c \ud544\uc694\ub85c \ud569\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc774\ub7ec\ud55c \uc124\uc815\uc744 \uc9c0\uc6d0\ud558\uc5ec \ud2b9\uc815 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc744
\ud56d\uc0c1 \ub3d9\uc77c\ud55c \ud30c\ub4dc\ub85c \ub77c\uc6b0\ud305\ud558\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc \ubaa8\ub4dc<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc5ec\ub7ec \ub124\ud2b8\uc6cc\ud06c \ubaa8\ub4dc\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ub450 \uac00\uc9c0 \ubaa8\ub4dc\ub294 iptables<\/code> \ubaa8\ub4dc\uc640 ipvs<\/code> \ubaa8\ub4dc\uc785\ub2c8\ub2e4. iptables<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 iptables\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud2b8\ub798\ud53d\uc744 \ub77c\uc6b0\ud305\ud558\ub294 \ubc18\uba74, ipvs<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 IP Virtual Server\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub85c\ub4dc \ubc38\ub7f0\uc2f1 \ubc0f \ud2b8\ub798\ud53d \ub77c\uc6b0\ud305\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc11c\ube44\uc2a4 \ud5ec\uc2a4 \uccb4\ud06c<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \uc5f0\uacb0\ub41c \ud30c\ub4dc\uc758 \uc0c1\ud0dc\ub97c \uacc4\uc18d \ud655\uc778\ud569\ub2c8\ub2e4.
\ub9cc\uc57d \ud30c\ub4dc\uac00 \uc885\ub8cc\ub418\uac70\ub098 \uac74\uac15\ud558\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\ub85c \uac04\uc8fc\ub418\uba74, \ud574\ub2f9 \ud30c\ub4dc\ub85c\uc758 \ud2b8\ub798\ud53d \uc804\ub2ec\uc744 \uc911\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \uc11c\ube44\uc2a4\uc758 \uc2e0\ub8b0\uc131\uacfc \ud6a8\uc728\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uc911\uc694\ud55c \uad6c\uc131 \uc694\uc18c\uc785\ub2c8\ub2e4.
\uadf8\ub7ec\ub098 \ucd5c\uadfc\uc758 \ub124\ud2b8\uc6cc\ud06c \uc194\ub8e8\uc158, \ud2b9\ud788 \uc11c\ub4dc\ud30c\ud2f0 CNI \ud50c\ub7ec\uadf8\uc778\uc5d0\uc11c\ub294 kube-proxy<\/code>\uc758 \uae30\ub2a5\uc744 \ub300\uccb4\ud558\uac70\ub098 \ud655\uc7a5\ud558\ub294 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\n<\/figure>\n<\/div>\n\n\n<\/div>\n\n\n\nWhat is CNI Pluggin?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
CNI (Container Network Interface)\ub294 \ucee8\ud14c\uc774\ub108 \uc2e4\ud589 \ud658\uacbd\uc744 \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4 \uaddc\uaca9\uc785\ub2c8\ub2e4.
CNI\ub294 \ucee8\ud14c\uc774\ub108\ub97c \uc2e4\ud589\ud558\uac70\ub098 \uc911\uc9c0\ud560 \ub54c \ub124\ud2b8\uc6cc\ud06c \ub9ac\uc18c\uc2a4\ub97c \ud560\ub2f9\ud558\uace0 \ud68c\uc218\ud558\ub294 \uae30\ub2a5\uc744 \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4\ub294 CNI\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud30c\ub4dc \ub124\ud2b8\uc6cc\ud0b9\uc744 \uad6c\uc131\ud569\ub2c8\ub2e4. \uc989, \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \ud30c\ub4dc\uac00 \uc0dd\uc131\ub420 \ub54c\ub9c8\ub2e4 CNI \ud50c\ub7ec\uadf8\uc778\uc774 \ud638\ucd9c\ub418\uc5b4 \ud574\ub2f9 \ud30c\ub4dc\ub97c \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4, IP \uc8fc\uc18c \ubc0f \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
Features<\/h3>\n\n\n\n
CNI \ud50c\ub7ec\uadf8\uc778\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uae30\ub2a5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- \ud50c\ub7ec\uadf8\uc778 \uccb4\uc778<\/strong>:\n
\n- \uc5ec\ub7ec CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc5f0\uacb0\ud558\uc5ec \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ud558\ub098\uc758 \ud50c\ub7ec\uadf8\uc778\uc774 \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0dd\uc131\ud558\uace0 \ub2e4\ub978 \ud50c\ub7ec\uadf8\uc778\uc774 \uadf8 \uc778\ud130\ud398\uc774\uc2a4\uc5d0 IPAM (IP \uc8fc\uc18c \uad00\ub9ac)\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - \ub2e4\uc591\ud55c \uad6c\ud604<\/strong>:\n
\n- CNI \uba85\uc138\uc5d0\ub294 \ub2e4\uc591\ud55c \uad6c\ud604\uc774 \uac00\ub2a5\ud558\uba70, \uc5ec\ub7ec \uacf5\uae09\uc5c5\uccb4\uc640 \ucee4\ubba4\ub2c8\ud2f0\uc5d0\uc11c \ub2e4\uc591\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uac1c\ubc1c\ud588\uc2b5\ub2c8\ub2e4.
\uc608\ub85c, Calico, Weave, Flannel, Cilium \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - IPAM<\/strong>:\n
\n- IP \uc8fc\uc18c \ud560\ub2f9\uacfc \uad00\ub9ac\ub97c \uc704\ud55c \ubcc4\ub3c4\uc758 \uc11c\ube0c\ud50c\ub7ec\uadf8\uc778 \uaddc\uaca9\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac \ub610\ub294 \ub124\ud2b8\uc6cc\ud06c \ud3f4\ub9ac\uc2dc\ub97c \uc9c0\uc6d0\ud558\uc5ec \ud30c\ub4dc \uac04\uc758 \ud2b8\ub798\ud53d\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9, \uc608\ub97c \ub4e4\uba74 DPDK\ub098 SR-IOV, \ubcf5\uc7a1\ud55c \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uc11c\ub4dc\ud30c\ud2f0 \uc5f0\uacc4<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uae30\uc874\uc758 \uc628\ud504\ub808\ubbf8\uc2a4 \ub610\ub294 \ud074\ub77c\uc6b0\ub4dc \ub124\ud2b8\uc6cc\ud0b9 \uc194\ub8e8\uc158\uacfc \ud1b5\ud569\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc124\uc815\ud560 \ub54c, \uc6d0\ud558\ub294 CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc120\ud0dd\ud558\uace0 \uc124\uce58\ud574\uc57c \ud569\ub2c8\ub2e4.
\uc120\ud0dd\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ud074\ub7ec\uc2a4\ud130\uc758 \ub124\ud2b8\uc6cc\ud06c \uc131\ub2a5, \uae30\ub2a5 \ubc0f \uad6c\uc131 \ubc29\uc2dd\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\n\n\n\n
<\/div>\n\n\n\nAdditional<\/h2>\n\n\n\nkubectl apply –dry-run=client -f [file-name]<\/h3>\n\n\n\n
kubectl apply --dry-run=client -f [file-name]<\/code> \uba85\ub839\uc5b4\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\uc758 \ubcc0\uacbd\uc0ac\ud56d\uc744 \uc2e4\uc81c\ub85c \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0
\uac80\uc99d\ub9cc \uc218\ud589\ud558\ub294 \uba85\ub839\uc5b4\uc785\ub2c8\ub2e4. \uc774 \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud558\uba74 \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \ubb38\ubc95 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n\uac01 \ubd80\ubd84\uc758 \uc0c1\uc138 \uc124\uba85\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- kubectl apply<\/strong>:
kubectl apply<\/code>\ub294 \uc120\uc5b8\uc801 \ubc29\uc2dd\uc73c\ub85c \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\ud558\uac70\ub098 \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.
\uc989, \uc8fc\uc5b4\uc9c4 \uad6c\uc131 \ud30c\uc77c\uc758 \uc0c1\ud0dc\ub97c \ud074\ub7ec\uc2a4\ud130\uc758 \ud604\uc7ac \uc0c1\ud0dc\uc640 \ub3d9\uae30\ud654\ud558\ub824\uace0 \uc2dc\ub3c4\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n- –dry-run=client<\/strong>: \uc774 \ud50c\ub798\uadf8\ub294 \uc2e4\uc81c\ub85c \ub9ac\uc18c\uc2a4\ub97c \ud074\ub7ec\uc2a4\ud130\uc5d0 \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0 \ub85c\uceec\uc5d0\uc11c\ub9cc \uac80\uc99d\ud569\ub2c8\ub2e4.
client<\/code>\ub294 \uac80\uc99d\uc744 \ub85c\uceec\uc5d0\uc11c\ub9cc \uc218\ud589\ud558\ub77c\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub85c \uc778\ud574 API \uc11c\ubc84\uc5d0 \uc804\uc1a1\ub418\ub294 \uc694\uccad\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n- -f [file-name]<\/strong>:
-f<\/code> \ud50c\ub798\uadf8\ub294 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc744 \ub2f4\uace0 \uc788\ub294 \ud30c\uc77c\uc744 \uc9c0\uc815\ud569\ub2c8\ub2e4.
[file-name]<\/code> \ubd80\ubd84\uc5d0\ub294 \ud574\ub2f9 \uad6c\uc131 \ud30c\uc77c\uc758 \uacbd\ub85c\ub97c \uc9c0\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n\uc608\ub97c \ub4e4\uc5b4, my-pod.yaml<\/code>\uc774\ub77c\ub294 \ud30c\uc77c\uc774 \uc788\uace0, \uc774 \ud30c\uc77c\uc758 \ub0b4\uc6a9\uc744 \uac80\uc99d\ud558\ub824\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\nkubectl apply --dry-run=client -f my-pod.yaml<\/sub><\/code><\/pre>\n\n\n\n\ub9cc\uc57d \uad6c\uc131 \ud30c\uc77c\uc5d0 \ubb38\ubc95\uc801\uc778 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\uac00 \uc5c6\ub2e4\uba74, \uba85\ub839\uc5b4\ub294 \ud574\ub2f9 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc774 \uc720\ud6a8\ud558\ub2e4\ub294 \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud560 \uac83\uc785\ub2c8\ub2e4.
\ub9cc\uc57d \uc624\ub958\uac00 \uc788\ub2e4\uba74, \ud574\ub2f9 \uc624\ub958\uc640 \uad00\ub828\ub41c \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud574 \uc90d\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
Kubernetes Nodes Concept Kubernetes\uc5d0\uc11c “\ub178\ub4dc”\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uc6cc\ucee4 \uba38\uc2e0\uc744 \ub098\ud0c0\ub0b4\uba70, \uc774\uc804\uc5d0\ub294 “\ubbf8\ub2c8\uc5b8”\uc774\ub77c\uace0\ub3c4 \ubd88\ub838\uc2b5\ub2c8\ub2e4. \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc77c\ubd80\ub85c\uc11c, \ucfe0\ubc84\ub124\ud2f0\uc2a4\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ud30c\ub4dc\uc758 \ucee8\ud14c\uc774\ub108\uac00 \uc2e4\ud589\ub418\ub294 \uacf3\uc785\ub2c8\ub2e4. Minion Kubernetes\uc758 \ucd08\uae30 \ubc84\uc804\uc5d0\uc11c \uc6cc\ucee4 \uba38\uc2e0(\uc989, \ud30c\ub4dc\ub97c \uc2e4\ud589\ud558\ub294 …<\/p>\n","protected":false},"author":1,"featured_media":6246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226,33],"tags":[129],"class_list":["post-4589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-tech-notes","tag-kubernetes"],"_links":{"self":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4589"}],"version-history":[{"count":46,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions"}],"predecessor-version":[{"id":6247,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions\/6247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/media\/6246"}],"wp:attachment":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\uc5ec\uae30\uc5d0\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84, etcd, \uc2a4\ucf00\uc904\ub7ec, \ucee8\ud2b8\ub864\ub7ec \ub9e4\ub2c8\uc800 \ub4f1\uc758 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n
\uc6cc\ucee4 \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc2e4\uc81c \uc791\uc5c5 \ubd80\ud558\ub97c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n
Node management<\/h3>\n\n\n\n\nkubectl get nodes<\/code>: \ud604\uc7ac \ud074\ub7ec\uc2a4\ud130\uc758 \ubaa8\ub4e0 \ub178\ub4dc\uc758 \uc0c1\ud0dc\uc640 \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\nkubectl describe node [\ub178\ub4dc \uc774\ub984]<\/code>: \ud2b9\uc815 \ub178\ub4dc\uc758 \uc790\uc138\ud55c \uc815\ubcf4\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n\ub178\ub4dc\ub294 \ubb3c\ub9ac\uc801\uc778 \uc11c\ubc84\ub098 \ud074\ub77c\uc6b0\ub4dc\uc758 VM, \ubca0\uc5b4\uba54\ud0c8 \uc11c\ubc84 \ubaa8\ub450 \uac00\ub2a5\ud558\uba70, \ub178\ub4dc\uc758 \ud5ec\uc2a4 \uccb4\ud06c\ub294 Kubelet\uc774 \uc8fc\uae30\uc801\uc73c\ub85c \uc218\ud589\ud569\ub2c8\ub2e4.
Kubelet\uc774 \uc77c\uc815 \uc2dc\uac04 \ub3d9\uc548 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84\uc640 \ud1b5\uc2e0\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 \ub178\ub4dc\ub294 NotReady<\/code> \uc0c1\ud0dc\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube control?<\/h2>\n\n\n\nConcept of kubelet<\/h3>\n\n\n\n
kubectl<\/code> (\ubc1c\uc74c: “kube control” \ub610\ub294 “kube cuddle”)\ub294 Kubernetes \ud074\ub7ec\uc2a4\ud130\uc640 \ud1b5\uc2e0\ud558\uace0 \uad00\ub9ac\ud558\uae30 \uc704\ud55c \ucee4\ub9e8\ub4dc\ub77c\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uc0ac\uc6a9\uc790\uac00 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc81c\uc5b4\ud558\uace0, \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\/\uc218\uc815\/\uc0ad\uc81c\ud558\uba70, \ub514\ubc84\uae45\uacfc \ub85c\uae45 \ub4f1 \ub2e4\uc591\ud55c \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\uac8c \ub3c4\uc640\uc90d\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
\ub2e4\uc74c\uc740 kubectl<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5 \ubc0f \uc0ac\uc6a9 \uc608\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \ub9ac\uc18c\uc2a4 \uad00\ub9ac<\/strong>: \ud30c\ub4dc, \uc11c\ube44\uc2a4, \ub514\ud50c\ub85c\uc774\uba3c\ud2b8 \ub4f1\uc758 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131, \uc5c5\ub370\uc774\ud2b8, \uc0ad\uc81c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl create<\/code>, kubectl delete<\/code>, kubectl apply<\/code>, kubectl edit<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc815\ubcf4 \uc870\ud68c<\/strong>: \ud074\ub7ec\uc2a4\ud130\uc640 \uad00\ub828\ub41c \ub2e4\uc591\ud55c \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl get<\/code>, kubectl describe<\/code>, kubectl logs<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub514\ubc84\uae45 \ubc0f \ubb38\uc81c \ud574\uacb0<\/strong>: \uc2e4\ud589 \uc911\uc778 \ud30c\ub4dc\uc640 \uad00\ub828\ub41c \ubb38\uc81c\ub97c \uc9c4\ub2e8\ud558\uac70\ub098 \ud574\uacb0\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl logs<\/code>, kubectl exec<\/code>, kubectl attach<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ud074\ub7ec\uc2a4\ud130 \uad00\ub9ac<\/strong>: \ud074\ub7ec\uc2a4\ud130 \uc124\uc815\uacfc \uad00\ub828\ub41c \uc791\uc5c5\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl config<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub9ac\uc18c\uc2a4 \ud30c\uc77c \uac80\uc99d<\/strong>: YAML \ub610\ub294 JSON \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl apply --dry-run=client -f [file-name]<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc2a4\ucf00\uc77c\ub9c1 \ubc0f \uc5c5\ub370\uc774\ud2b8<\/strong>: \uc2e4\ud589 \uc911\uc778 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ubcf5\uc81c \uc218\ub97c \uc870\uc815\ud558\uac70\ub098 \uc0c8 \ubc84\uc804\uc73c\ub85c \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl scale<\/code>, kubectl rollout<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n\ub610\ud55c, kubectl<\/code>\uc758 \uc790\ub3d9 \uc644\uc131, \ubcc4\uce6d \uc124\uc815 \ub4f1 \ub2e4\uc591\ud55c \ud50c\ub7ec\uadf8\uc778\uacfc \ud655\uc7a5 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\nkubectl<\/code> \uc0ac\uc6a9 \uc2dc\uc5d0\ub294 \ub300\ubd80\ubd84\uc758 \uba85\ub839\uc5b4\uac00 kubectl [\uba85\ub839] [\ud0c0\uc785] [\uc774\ub984] [\ud50c\ub798\uadf8]<\/code>\uc758 \ud615\uc2dd\uc744 \ub530\ub985\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ubaa8\ub4e0 \ud30c\ub4dc\ub97c \uc870\ud68c\ud558\ub824\uba74 kubectl get pods<\/code>\ub97c \uc0ac\uc6a9\ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n\ucfe0\ubc84\ub124\ud2f0\uc2a4\uc758 \uc8fc\uc694 \ucef4\ud3ec\ub10c\ud2b8 \ubc0f \ub9ac\uc18c\uc2a4\uc640 \uc0c1\ud638 \uc791\uc6a9\ud560 \ub54c kubectl<\/code>\uc740 \ud544\uc218 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uacf5\uc2dd \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ubb38\uc11c\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 kubectl<\/code> \ucca0\uc800\ud55c \uac00\uc774\ub4dc\uc640 \ud568\uaed8 \ub9ce\uc740 \uc2e4\uc2b5\uc744 \ud1b5\ud574 \ud6a8\uacfc\uc801\uc73c\ub85c \ud559\uc2b5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube-proxy?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uac01 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc\uc785\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4 \ucd94\uc0c1\ud654\uc758 \uc77c\ubd80\ub97c \uad6c\ud604\ud558\ub294\ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
kube-proxy<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5\uacfc \uc5ed\ud560\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \uc11c\ube44\uc2a4 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4\uc758 IP \uc8fc\uc18c\uc640 \ud3ec\ud2b8\uc5d0 \ub300\ud55c \ud2b8\ub798\ud53d\uc744 \uc801\uc808\ud55c \ud30c\ub4dc\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4.
\uc989, \uc11c\ube44\uc2a4\uc758 \ud074\ub7ec\uc2a4\ud130 IP\ub85c \ub4e4\uc5b4\uc624\ub294 \ud2b8\ub798\ud53d\uc744 \uc2e4\uc81c\ub85c \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud558\ub294 \ud30c\ub4dc\uc758 IP\ub85c \ub77c\uc6b0\ud305\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub85c\ub4dc \ubc38\ub7f0\uc2f1<\/strong>:\n
\n- \ud558\ub098\uc758 \uc11c\ube44\uc2a4\ub294 \uc5ec\ub7ec \uac1c\uc758 \ud30c\ub4dc\uc5d0\uc11c \uc81c\uacf5\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \ub300\ud55c \uc694\uccad\uc744 \uc774\ub7ec\ud55c \ud30c\ub4dc\ub4e4 \uc0ac\uc774\uc5d0 \ub85c\ub4dc \ubc38\ub7f0\uc2f1\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc138\uc158 \uc5b4\ud53c\ub2c8\ud2f0<\/strong>:\n
\n- \uc77c\ubd80 \uc11c\ube44\uc2a4\ub294 \uc138\uc158 \uae30\ubc18\uc758 \uc5b4\ud53c\ub2c8\ud2f0\ub97c \ud544\uc694\ub85c \ud569\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc774\ub7ec\ud55c \uc124\uc815\uc744 \uc9c0\uc6d0\ud558\uc5ec \ud2b9\uc815 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc744
\ud56d\uc0c1 \ub3d9\uc77c\ud55c \ud30c\ub4dc\ub85c \ub77c\uc6b0\ud305\ud558\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc \ubaa8\ub4dc<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc5ec\ub7ec \ub124\ud2b8\uc6cc\ud06c \ubaa8\ub4dc\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ub450 \uac00\uc9c0 \ubaa8\ub4dc\ub294 iptables<\/code> \ubaa8\ub4dc\uc640 ipvs<\/code> \ubaa8\ub4dc\uc785\ub2c8\ub2e4. iptables<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 iptables\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud2b8\ub798\ud53d\uc744 \ub77c\uc6b0\ud305\ud558\ub294 \ubc18\uba74, ipvs<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 IP Virtual Server\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub85c\ub4dc \ubc38\ub7f0\uc2f1 \ubc0f \ud2b8\ub798\ud53d \ub77c\uc6b0\ud305\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc11c\ube44\uc2a4 \ud5ec\uc2a4 \uccb4\ud06c<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \uc5f0\uacb0\ub41c \ud30c\ub4dc\uc758 \uc0c1\ud0dc\ub97c \uacc4\uc18d \ud655\uc778\ud569\ub2c8\ub2e4.
\ub9cc\uc57d \ud30c\ub4dc\uac00 \uc885\ub8cc\ub418\uac70\ub098 \uac74\uac15\ud558\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\ub85c \uac04\uc8fc\ub418\uba74, \ud574\ub2f9 \ud30c\ub4dc\ub85c\uc758 \ud2b8\ub798\ud53d \uc804\ub2ec\uc744 \uc911\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \uc11c\ube44\uc2a4\uc758 \uc2e0\ub8b0\uc131\uacfc \ud6a8\uc728\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uc911\uc694\ud55c \uad6c\uc131 \uc694\uc18c\uc785\ub2c8\ub2e4.
\uadf8\ub7ec\ub098 \ucd5c\uadfc\uc758 \ub124\ud2b8\uc6cc\ud06c \uc194\ub8e8\uc158, \ud2b9\ud788 \uc11c\ub4dc\ud30c\ud2f0 CNI \ud50c\ub7ec\uadf8\uc778\uc5d0\uc11c\ub294 kube-proxy<\/code>\uc758 \uae30\ub2a5\uc744 \ub300\uccb4\ud558\uac70\ub098 \ud655\uc7a5\ud558\ub294 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\n<\/figure>\n<\/div>\n\n\n<\/div>\n\n\n\nWhat is CNI Pluggin?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
CNI (Container Network Interface)\ub294 \ucee8\ud14c\uc774\ub108 \uc2e4\ud589 \ud658\uacbd\uc744 \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4 \uaddc\uaca9\uc785\ub2c8\ub2e4.
CNI\ub294 \ucee8\ud14c\uc774\ub108\ub97c \uc2e4\ud589\ud558\uac70\ub098 \uc911\uc9c0\ud560 \ub54c \ub124\ud2b8\uc6cc\ud06c \ub9ac\uc18c\uc2a4\ub97c \ud560\ub2f9\ud558\uace0 \ud68c\uc218\ud558\ub294 \uae30\ub2a5\uc744 \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4\ub294 CNI\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud30c\ub4dc \ub124\ud2b8\uc6cc\ud0b9\uc744 \uad6c\uc131\ud569\ub2c8\ub2e4. \uc989, \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \ud30c\ub4dc\uac00 \uc0dd\uc131\ub420 \ub54c\ub9c8\ub2e4 CNI \ud50c\ub7ec\uadf8\uc778\uc774 \ud638\ucd9c\ub418\uc5b4 \ud574\ub2f9 \ud30c\ub4dc\ub97c \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4, IP \uc8fc\uc18c \ubc0f \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
Features<\/h3>\n\n\n\n
CNI \ud50c\ub7ec\uadf8\uc778\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uae30\ub2a5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- \ud50c\ub7ec\uadf8\uc778 \uccb4\uc778<\/strong>:\n
\n- \uc5ec\ub7ec CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc5f0\uacb0\ud558\uc5ec \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ud558\ub098\uc758 \ud50c\ub7ec\uadf8\uc778\uc774 \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0dd\uc131\ud558\uace0 \ub2e4\ub978 \ud50c\ub7ec\uadf8\uc778\uc774 \uadf8 \uc778\ud130\ud398\uc774\uc2a4\uc5d0 IPAM (IP \uc8fc\uc18c \uad00\ub9ac)\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - \ub2e4\uc591\ud55c \uad6c\ud604<\/strong>:\n
\n- CNI \uba85\uc138\uc5d0\ub294 \ub2e4\uc591\ud55c \uad6c\ud604\uc774 \uac00\ub2a5\ud558\uba70, \uc5ec\ub7ec \uacf5\uae09\uc5c5\uccb4\uc640 \ucee4\ubba4\ub2c8\ud2f0\uc5d0\uc11c \ub2e4\uc591\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uac1c\ubc1c\ud588\uc2b5\ub2c8\ub2e4.
\uc608\ub85c, Calico, Weave, Flannel, Cilium \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - IPAM<\/strong>:\n
\n- IP \uc8fc\uc18c \ud560\ub2f9\uacfc \uad00\ub9ac\ub97c \uc704\ud55c \ubcc4\ub3c4\uc758 \uc11c\ube0c\ud50c\ub7ec\uadf8\uc778 \uaddc\uaca9\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac \ub610\ub294 \ub124\ud2b8\uc6cc\ud06c \ud3f4\ub9ac\uc2dc\ub97c \uc9c0\uc6d0\ud558\uc5ec \ud30c\ub4dc \uac04\uc758 \ud2b8\ub798\ud53d\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9, \uc608\ub97c \ub4e4\uba74 DPDK\ub098 SR-IOV, \ubcf5\uc7a1\ud55c \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uc11c\ub4dc\ud30c\ud2f0 \uc5f0\uacc4<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uae30\uc874\uc758 \uc628\ud504\ub808\ubbf8\uc2a4 \ub610\ub294 \ud074\ub77c\uc6b0\ub4dc \ub124\ud2b8\uc6cc\ud0b9 \uc194\ub8e8\uc158\uacfc \ud1b5\ud569\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc124\uc815\ud560 \ub54c, \uc6d0\ud558\ub294 CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc120\ud0dd\ud558\uace0 \uc124\uce58\ud574\uc57c \ud569\ub2c8\ub2e4.
\uc120\ud0dd\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ud074\ub7ec\uc2a4\ud130\uc758 \ub124\ud2b8\uc6cc\ud06c \uc131\ub2a5, \uae30\ub2a5 \ubc0f \uad6c\uc131 \ubc29\uc2dd\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\n\n\n\n
<\/div>\n\n\n\nAdditional<\/h2>\n\n\n\nkubectl apply –dry-run=client -f [file-name]<\/h3>\n\n\n\n
kubectl apply --dry-run=client -f [file-name]<\/code> \uba85\ub839\uc5b4\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\uc758 \ubcc0\uacbd\uc0ac\ud56d\uc744 \uc2e4\uc81c\ub85c \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0
\uac80\uc99d\ub9cc \uc218\ud589\ud558\ub294 \uba85\ub839\uc5b4\uc785\ub2c8\ub2e4. \uc774 \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud558\uba74 \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \ubb38\ubc95 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n\uac01 \ubd80\ubd84\uc758 \uc0c1\uc138 \uc124\uba85\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- kubectl apply<\/strong>:
kubectl apply<\/code>\ub294 \uc120\uc5b8\uc801 \ubc29\uc2dd\uc73c\ub85c \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\ud558\uac70\ub098 \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.
\uc989, \uc8fc\uc5b4\uc9c4 \uad6c\uc131 \ud30c\uc77c\uc758 \uc0c1\ud0dc\ub97c \ud074\ub7ec\uc2a4\ud130\uc758 \ud604\uc7ac \uc0c1\ud0dc\uc640 \ub3d9\uae30\ud654\ud558\ub824\uace0 \uc2dc\ub3c4\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n- –dry-run=client<\/strong>: \uc774 \ud50c\ub798\uadf8\ub294 \uc2e4\uc81c\ub85c \ub9ac\uc18c\uc2a4\ub97c \ud074\ub7ec\uc2a4\ud130\uc5d0 \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0 \ub85c\uceec\uc5d0\uc11c\ub9cc \uac80\uc99d\ud569\ub2c8\ub2e4.
client<\/code>\ub294 \uac80\uc99d\uc744 \ub85c\uceec\uc5d0\uc11c\ub9cc \uc218\ud589\ud558\ub77c\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub85c \uc778\ud574 API \uc11c\ubc84\uc5d0 \uc804\uc1a1\ub418\ub294 \uc694\uccad\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n- -f [file-name]<\/strong>:
-f<\/code> \ud50c\ub798\uadf8\ub294 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc744 \ub2f4\uace0 \uc788\ub294 \ud30c\uc77c\uc744 \uc9c0\uc815\ud569\ub2c8\ub2e4.
[file-name]<\/code> \ubd80\ubd84\uc5d0\ub294 \ud574\ub2f9 \uad6c\uc131 \ud30c\uc77c\uc758 \uacbd\ub85c\ub97c \uc9c0\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n\uc608\ub97c \ub4e4\uc5b4, my-pod.yaml<\/code>\uc774\ub77c\ub294 \ud30c\uc77c\uc774 \uc788\uace0, \uc774 \ud30c\uc77c\uc758 \ub0b4\uc6a9\uc744 \uac80\uc99d\ud558\ub824\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\nkubectl apply --dry-run=client -f my-pod.yaml<\/sub><\/code><\/pre>\n\n\n\n\ub9cc\uc57d \uad6c\uc131 \ud30c\uc77c\uc5d0 \ubb38\ubc95\uc801\uc778 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\uac00 \uc5c6\ub2e4\uba74, \uba85\ub839\uc5b4\ub294 \ud574\ub2f9 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc774 \uc720\ud6a8\ud558\ub2e4\ub294 \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud560 \uac83\uc785\ub2c8\ub2e4.
\ub9cc\uc57d \uc624\ub958\uac00 \uc788\ub2e4\uba74, \ud574\ub2f9 \uc624\ub958\uc640 \uad00\ub828\ub41c \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud574 \uc90d\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
Kubernetes Nodes Concept Kubernetes\uc5d0\uc11c “\ub178\ub4dc”\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uc6cc\ucee4 \uba38\uc2e0\uc744 \ub098\ud0c0\ub0b4\uba70, \uc774\uc804\uc5d0\ub294 “\ubbf8\ub2c8\uc5b8”\uc774\ub77c\uace0\ub3c4 \ubd88\ub838\uc2b5\ub2c8\ub2e4. \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc77c\ubd80\ub85c\uc11c, \ucfe0\ubc84\ub124\ud2f0\uc2a4\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ud30c\ub4dc\uc758 \ucee8\ud14c\uc774\ub108\uac00 \uc2e4\ud589\ub418\ub294 \uacf3\uc785\ub2c8\ub2e4. Minion Kubernetes\uc758 \ucd08\uae30 \ubc84\uc804\uc5d0\uc11c \uc6cc\ucee4 \uba38\uc2e0(\uc989, \ud30c\ub4dc\ub97c \uc2e4\ud589\ud558\ub294 …<\/p>\n","protected":false},"author":1,"featured_media":6246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226,33],"tags":[129],"class_list":["post-4589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-tech-notes","tag-kubernetes"],"_links":{"self":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4589"}],"version-history":[{"count":46,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions"}],"predecessor-version":[{"id":6247,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions\/6247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/media\/6246"}],"wp:attachment":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
kubectl get nodes<\/code>: \ud604\uc7ac \ud074\ub7ec\uc2a4\ud130\uc758 \ubaa8\ub4e0 \ub178\ub4dc\uc758 \uc0c1\ud0dc\uc640 \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\nkubectl describe node [\ub178\ub4dc \uc774\ub984]<\/code>: \ud2b9\uc815 \ub178\ub4dc\uc758 \uc790\uc138\ud55c \uc815\ubcf4\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n\ub178\ub4dc\ub294 \ubb3c\ub9ac\uc801\uc778 \uc11c\ubc84\ub098 \ud074\ub77c\uc6b0\ub4dc\uc758 VM, \ubca0\uc5b4\uba54\ud0c8 \uc11c\ubc84 \ubaa8\ub450 \uac00\ub2a5\ud558\uba70, \ub178\ub4dc\uc758 \ud5ec\uc2a4 \uccb4\ud06c\ub294 Kubelet\uc774 \uc8fc\uae30\uc801\uc73c\ub85c \uc218\ud589\ud569\ub2c8\ub2e4.
Kubelet\uc774 \uc77c\uc815 \uc2dc\uac04 \ub3d9\uc548 \ucfe0\ubc84\ub124\ud2f0\uc2a4 API \uc11c\ubc84\uc640 \ud1b5\uc2e0\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 \ub178\ub4dc\ub294 NotReady<\/code> \uc0c1\ud0dc\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube control?<\/h2>\n\n\n\nConcept of kubelet<\/h3>\n\n\n\n
kubectl<\/code> (\ubc1c\uc74c: “kube control” \ub610\ub294 “kube cuddle”)\ub294 Kubernetes \ud074\ub7ec\uc2a4\ud130\uc640 \ud1b5\uc2e0\ud558\uace0 \uad00\ub9ac\ud558\uae30 \uc704\ud55c \ucee4\ub9e8\ub4dc\ub77c\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uc0ac\uc6a9\uc790\uac00 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc81c\uc5b4\ud558\uace0, \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\/\uc218\uc815\/\uc0ad\uc81c\ud558\uba70, \ub514\ubc84\uae45\uacfc \ub85c\uae45 \ub4f1 \ub2e4\uc591\ud55c \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\uac8c \ub3c4\uc640\uc90d\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
\ub2e4\uc74c\uc740 kubectl<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5 \ubc0f \uc0ac\uc6a9 \uc608\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \ub9ac\uc18c\uc2a4 \uad00\ub9ac<\/strong>: \ud30c\ub4dc, \uc11c\ube44\uc2a4, \ub514\ud50c\ub85c\uc774\uba3c\ud2b8 \ub4f1\uc758 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131, \uc5c5\ub370\uc774\ud2b8, \uc0ad\uc81c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl create<\/code>, kubectl delete<\/code>, kubectl apply<\/code>, kubectl edit<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc815\ubcf4 \uc870\ud68c<\/strong>: \ud074\ub7ec\uc2a4\ud130\uc640 \uad00\ub828\ub41c \ub2e4\uc591\ud55c \uc815\ubcf4\ub97c \uc870\ud68c\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl get<\/code>, kubectl describe<\/code>, kubectl logs<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub514\ubc84\uae45 \ubc0f \ubb38\uc81c \ud574\uacb0<\/strong>: \uc2e4\ud589 \uc911\uc778 \ud30c\ub4dc\uc640 \uad00\ub828\ub41c \ubb38\uc81c\ub97c \uc9c4\ub2e8\ud558\uac70\ub098 \ud574\uacb0\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl logs<\/code>, kubectl exec<\/code>, kubectl attach<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ud074\ub7ec\uc2a4\ud130 \uad00\ub9ac<\/strong>: \ud074\ub7ec\uc2a4\ud130 \uc124\uc815\uacfc \uad00\ub828\ub41c \uc791\uc5c5\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl config<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub9ac\uc18c\uc2a4 \ud30c\uc77c \uac80\uc99d<\/strong>: YAML \ub610\ub294 JSON \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \uc720\ud6a8\uc131\uc744 \uac80\uc0ac\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl apply --dry-run=client -f [file-name]<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc2a4\ucf00\uc77c\ub9c1 \ubc0f \uc5c5\ub370\uc774\ud2b8<\/strong>: \uc2e4\ud589 \uc911\uc778 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ubcf5\uc81c \uc218\ub97c \uc870\uc815\ud558\uac70\ub098 \uc0c8 \ubc84\uc804\uc73c\ub85c \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.\n
\n- \uc608:
kubectl scale<\/code>, kubectl rollout<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n\ub610\ud55c, kubectl<\/code>\uc758 \uc790\ub3d9 \uc644\uc131, \ubcc4\uce6d \uc124\uc815 \ub4f1 \ub2e4\uc591\ud55c \ud50c\ub7ec\uadf8\uc778\uacfc \ud655\uc7a5 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\nkubectl<\/code> \uc0ac\uc6a9 \uc2dc\uc5d0\ub294 \ub300\ubd80\ubd84\uc758 \uba85\ub839\uc5b4\uac00 kubectl [\uba85\ub839] [\ud0c0\uc785] [\uc774\ub984] [\ud50c\ub798\uadf8]<\/code>\uc758 \ud615\uc2dd\uc744 \ub530\ub985\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ubaa8\ub4e0 \ud30c\ub4dc\ub97c \uc870\ud68c\ud558\ub824\uba74 kubectl get pods<\/code>\ub97c \uc0ac\uc6a9\ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n\ucfe0\ubc84\ub124\ud2f0\uc2a4\uc758 \uc8fc\uc694 \ucef4\ud3ec\ub10c\ud2b8 \ubc0f \ub9ac\uc18c\uc2a4\uc640 \uc0c1\ud638 \uc791\uc6a9\ud560 \ub54c kubectl<\/code>\uc740 \ud544\uc218 \ub3c4\uad6c\uc785\ub2c8\ub2e4.
\uacf5\uc2dd \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ubb38\uc11c\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 kubectl<\/code> \ucca0\uc800\ud55c \uac00\uc774\ub4dc\uc640 \ud568\uaed8 \ub9ce\uc740 \uc2e4\uc2b5\uc744 \ud1b5\ud574 \ud6a8\uacfc\uc801\uc73c\ub85c \ud559\uc2b5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\nWhat is kube-proxy?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uac01 \ub178\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc\uc785\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4 \ucd94\uc0c1\ud654\uc758 \uc77c\ubd80\ub97c \uad6c\ud604\ud558\ub294\ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\nFeatures<\/h3>\n\n\n\n
kube-proxy<\/code>\uc758 \uc8fc\uc694 \uae30\ub2a5\uacfc \uc5ed\ud560\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n\n- \uc11c\ube44\uc2a4 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \uc11c\ube44\uc2a4\uc758 IP \uc8fc\uc18c\uc640 \ud3ec\ud2b8\uc5d0 \ub300\ud55c \ud2b8\ub798\ud53d\uc744 \uc801\uc808\ud55c \ud30c\ub4dc\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4.
\uc989, \uc11c\ube44\uc2a4\uc758 \ud074\ub7ec\uc2a4\ud130 IP\ub85c \ub4e4\uc5b4\uc624\ub294 \ud2b8\ub798\ud53d\uc744 \uc2e4\uc81c\ub85c \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud558\ub294 \ud30c\ub4dc\uc758 IP\ub85c \ub77c\uc6b0\ud305\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub85c\ub4dc \ubc38\ub7f0\uc2f1<\/strong>:\n
\n- \ud558\ub098\uc758 \uc11c\ube44\uc2a4\ub294 \uc5ec\ub7ec \uac1c\uc758 \ud30c\ub4dc\uc5d0\uc11c \uc81c\uacf5\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \ub300\ud55c \uc694\uccad\uc744 \uc774\ub7ec\ud55c \ud30c\ub4dc\ub4e4 \uc0ac\uc774\uc5d0 \ub85c\ub4dc \ubc38\ub7f0\uc2f1\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc138\uc158 \uc5b4\ud53c\ub2c8\ud2f0<\/strong>:\n
\n- \uc77c\ubd80 \uc11c\ube44\uc2a4\ub294 \uc138\uc158 \uae30\ubc18\uc758 \uc5b4\ud53c\ub2c8\ud2f0\ub97c \ud544\uc694\ub85c \ud569\ub2c8\ub2e4.
kube-proxy<\/code>\ub294 \uc774\ub7ec\ud55c \uc124\uc815\uc744 \uc9c0\uc6d0\ud558\uc5ec \ud2b9\uc815 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc744
\ud56d\uc0c1 \ub3d9\uc77c\ud55c \ud30c\ub4dc\ub85c \ub77c\uc6b0\ud305\ud558\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \ub124\ud2b8\uc6cc\ud06c \ud504\ub85d\uc2dc \ubaa8\ub4dc<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc5ec\ub7ec \ub124\ud2b8\uc6cc\ud06c \ubaa8\ub4dc\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \uac00\uc7a5 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ub450 \uac00\uc9c0 \ubaa8\ub4dc\ub294 iptables<\/code> \ubaa8\ub4dc\uc640 ipvs<\/code> \ubaa8\ub4dc\uc785\ub2c8\ub2e4. iptables<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 iptables\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud2b8\ub798\ud53d\uc744 \ub77c\uc6b0\ud305\ud558\ub294 \ubc18\uba74, ipvs<\/code> \ubaa8\ub4dc\ub294 \ub9ac\ub205\uc2a4\uc758 IP Virtual Server\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub85c\ub4dc \ubc38\ub7f0\uc2f1 \ubc0f \ud2b8\ub798\ud53d \ub77c\uc6b0\ud305\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n- \uc11c\ube44\uc2a4 \ud5ec\uc2a4 \uccb4\ud06c<\/strong>:\n
\nkube-proxy<\/code>\ub294 \uc11c\ube44\uc2a4\uc5d0 \uc5f0\uacb0\ub41c \ud30c\ub4dc\uc758 \uc0c1\ud0dc\ub97c \uacc4\uc18d \ud655\uc778\ud569\ub2c8\ub2e4.
\ub9cc\uc57d \ud30c\ub4dc\uac00 \uc885\ub8cc\ub418\uac70\ub098 \uac74\uac15\ud558\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\ub85c \uac04\uc8fc\ub418\uba74, \ud574\ub2f9 \ud30c\ub4dc\ub85c\uc758 \ud2b8\ub798\ud53d \uc804\ub2ec\uc744 \uc911\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\nkube-proxy<\/code>\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \uc11c\ube44\uc2a4\uc758 \uc2e0\ub8b0\uc131\uacfc \ud6a8\uc728\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uc911\uc694\ud55c \uad6c\uc131 \uc694\uc18c\uc785\ub2c8\ub2e4.
\uadf8\ub7ec\ub098 \ucd5c\uadfc\uc758 \ub124\ud2b8\uc6cc\ud06c \uc194\ub8e8\uc158, \ud2b9\ud788 \uc11c\ub4dc\ud30c\ud2f0 CNI \ud50c\ub7ec\uadf8\uc778\uc5d0\uc11c\ub294 kube-proxy<\/code>\uc758 \uae30\ub2a5\uc744 \ub300\uccb4\ud558\uac70\ub098 \ud655\uc7a5\ud558\ub294 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<\/div>\n\n\n\n<\/figure>\n<\/div>\n\n\n<\/div>\n\n\n\nWhat is CNI Pluggin?<\/h2>\n\n\n\nConcept<\/h3>\n\n\n\n
CNI (Container Network Interface)\ub294 \ucee8\ud14c\uc774\ub108 \uc2e4\ud589 \ud658\uacbd\uc744 \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4 \uaddc\uaca9\uc785\ub2c8\ub2e4.
CNI\ub294 \ucee8\ud14c\uc774\ub108\ub97c \uc2e4\ud589\ud558\uac70\ub098 \uc911\uc9c0\ud560 \ub54c \ub124\ud2b8\uc6cc\ud06c \ub9ac\uc18c\uc2a4\ub97c \ud560\ub2f9\ud558\uace0 \ud68c\uc218\ud558\ub294 \uae30\ub2a5\uc744 \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4\ub294 CNI\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud30c\ub4dc \ub124\ud2b8\uc6cc\ud0b9\uc744 \uad6c\uc131\ud569\ub2c8\ub2e4. \uc989, \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \ud30c\ub4dc\uac00 \uc0dd\uc131\ub420 \ub54c\ub9c8\ub2e4 CNI \ud50c\ub7ec\uadf8\uc778\uc774 \ud638\ucd9c\ub418\uc5b4 \ud574\ub2f9 \ud30c\ub4dc\ub97c \uc704\ud55c \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4, IP \uc8fc\uc18c \ubc0f \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
Features<\/h3>\n\n\n\n
CNI \ud50c\ub7ec\uadf8\uc778\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uae30\ub2a5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- \ud50c\ub7ec\uadf8\uc778 \uccb4\uc778<\/strong>:\n
\n- \uc5ec\ub7ec CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc5f0\uacb0\ud558\uc5ec \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4, \ud558\ub098\uc758 \ud50c\ub7ec\uadf8\uc778\uc774 \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0dd\uc131\ud558\uace0 \ub2e4\ub978 \ud50c\ub7ec\uadf8\uc778\uc774 \uadf8 \uc778\ud130\ud398\uc774\uc2a4\uc5d0 IPAM (IP \uc8fc\uc18c \uad00\ub9ac)\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - \ub2e4\uc591\ud55c \uad6c\ud604<\/strong>:\n
\n- CNI \uba85\uc138\uc5d0\ub294 \ub2e4\uc591\ud55c \uad6c\ud604\uc774 \uac00\ub2a5\ud558\uba70, \uc5ec\ub7ec \uacf5\uae09\uc5c5\uccb4\uc640 \ucee4\ubba4\ub2c8\ud2f0\uc5d0\uc11c \ub2e4\uc591\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uac1c\ubc1c\ud588\uc2b5\ub2c8\ub2e4.
\uc608\ub85c, Calico, Weave, Flannel, Cilium \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n - IPAM<\/strong>:\n
\n- IP \uc8fc\uc18c \ud560\ub2f9\uacfc \uad00\ub9ac\ub97c \uc704\ud55c \ubcc4\ub3c4\uc758 \uc11c\ube0c\ud50c\ub7ec\uadf8\uc778 \uaddc\uaca9\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac \ub610\ub294 \ub124\ud2b8\uc6cc\ud06c \ud3f4\ub9ac\uc2dc\ub97c \uc9c0\uc6d0\ud558\uc5ec \ud30c\ub4dc \uac04\uc758 \ud2b8\ub798\ud53d\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uace0\uc131\ub2a5 \ub124\ud2b8\uc6cc\ud0b9, \uc608\ub97c \ub4e4\uba74 DPDK\ub098 SR-IOV, \ubcf5\uc7a1\ud55c \ub77c\uc6b0\ud305 \uaddc\uce59\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
- \uc11c\ub4dc\ud30c\ud2f0 \uc5f0\uacc4<\/strong>:\n
\n- \uc77c\ubd80 CNI \ud50c\ub7ec\uadf8\uc778\uc740 \uae30\uc874\uc758 \uc628\ud504\ub808\ubbf8\uc2a4 \ub610\ub294 \ud074\ub77c\uc6b0\ub4dc \ub124\ud2b8\uc6cc\ud0b9 \uc194\ub8e8\uc158\uacfc \ud1b5\ud569\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
\ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\ub97c \uc124\uc815\ud560 \ub54c, \uc6d0\ud558\ub294 CNI \ud50c\ub7ec\uadf8\uc778\uc744 \uc120\ud0dd\ud558\uace0 \uc124\uce58\ud574\uc57c \ud569\ub2c8\ub2e4.
\uc120\ud0dd\ud55c CNI \ud50c\ub7ec\uadf8\uc778\uc740 \ud074\ub7ec\uc2a4\ud130\uc758 \ub124\ud2b8\uc6cc\ud06c \uc131\ub2a5, \uae30\ub2a5 \ubc0f \uad6c\uc131 \ubc29\uc2dd\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\n\n\n\n
<\/div>\n\n\n\nAdditional<\/h2>\n\n\n\nkubectl apply –dry-run=client -f [file-name]<\/h3>\n\n\n\n
kubectl apply --dry-run=client -f [file-name]<\/code> \uba85\ub839\uc5b4\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\uc758 \ubcc0\uacbd\uc0ac\ud56d\uc744 \uc2e4\uc81c\ub85c \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0
\uac80\uc99d\ub9cc \uc218\ud589\ud558\ub294 \uba85\ub839\uc5b4\uc785\ub2c8\ub2e4. \uc774 \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud558\uba74 \ub9ac\uc18c\uc2a4 \ud30c\uc77c\uc758 \ubb38\ubc95 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n\uac01 \ubd80\ubd84\uc758 \uc0c1\uc138 \uc124\uba85\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n
\n- kubectl apply<\/strong>:
kubectl apply<\/code>\ub294 \uc120\uc5b8\uc801 \ubc29\uc2dd\uc73c\ub85c \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ub9ac\uc18c\uc2a4\ub97c \uc0dd\uc131\ud558\uac70\ub098 \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4.
\uc989, \uc8fc\uc5b4\uc9c4 \uad6c\uc131 \ud30c\uc77c\uc758 \uc0c1\ud0dc\ub97c \ud074\ub7ec\uc2a4\ud130\uc758 \ud604\uc7ac \uc0c1\ud0dc\uc640 \ub3d9\uae30\ud654\ud558\ub824\uace0 \uc2dc\ub3c4\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n- –dry-run=client<\/strong>: \uc774 \ud50c\ub798\uadf8\ub294 \uc2e4\uc81c\ub85c \ub9ac\uc18c\uc2a4\ub97c \ud074\ub7ec\uc2a4\ud130\uc5d0 \uc801\uc6a9\ud558\uc9c0 \uc54a\uace0 \ub85c\uceec\uc5d0\uc11c\ub9cc \uac80\uc99d\ud569\ub2c8\ub2e4.
client<\/code>\ub294 \uac80\uc99d\uc744 \ub85c\uceec\uc5d0\uc11c\ub9cc \uc218\ud589\ud558\ub77c\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub85c \uc778\ud574 API \uc11c\ubc84\uc5d0 \uc804\uc1a1\ub418\ub294 \uc694\uccad\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n- -f [file-name]<\/strong>:
-f<\/code> \ud50c\ub798\uadf8\ub294 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc744 \ub2f4\uace0 \uc788\ub294 \ud30c\uc77c\uc744 \uc9c0\uc815\ud569\ub2c8\ub2e4.
[file-name]<\/code> \ubd80\ubd84\uc5d0\ub294 \ud574\ub2f9 \uad6c\uc131 \ud30c\uc77c\uc758 \uacbd\ub85c\ub97c \uc9c0\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n\uc608\ub97c \ub4e4\uc5b4, my-pod.yaml<\/code>\uc774\ub77c\ub294 \ud30c\uc77c\uc774 \uc788\uace0, \uc774 \ud30c\uc77c\uc758 \ub0b4\uc6a9\uc744 \uac80\uc99d\ud558\ub824\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\nkubectl apply --dry-run=client -f my-pod.yaml<\/sub><\/code><\/pre>\n\n\n\n\ub9cc\uc57d \uad6c\uc131 \ud30c\uc77c\uc5d0 \ubb38\ubc95\uc801\uc778 \uc624\ub958\ub098 \uad6c\uc131 \uc624\ub958\uac00 \uc5c6\ub2e4\uba74, \uba85\ub839\uc5b4\ub294 \ud574\ub2f9 \ub9ac\uc18c\uc2a4\uc758 \uad6c\uc131\uc774 \uc720\ud6a8\ud558\ub2e4\ub294 \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud560 \uac83\uc785\ub2c8\ub2e4.
\ub9cc\uc57d \uc624\ub958\uac00 \uc788\ub2e4\uba74, \ud574\ub2f9 \uc624\ub958\uc640 \uad00\ub828\ub41c \uba54\uc2dc\uc9c0\ub97c \ucd9c\ub825\ud574 \uc90d\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
Kubernetes Nodes Concept Kubernetes\uc5d0\uc11c “\ub178\ub4dc”\ub294 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ud074\ub7ec\uc2a4\ud130\uc758 \uc6cc\ucee4 \uba38\uc2e0\uc744 \ub098\ud0c0\ub0b4\uba70, \uc774\uc804\uc5d0\ub294 “\ubbf8\ub2c8\uc5b8”\uc774\ub77c\uace0\ub3c4 \ubd88\ub838\uc2b5\ub2c8\ub2e4. \ub178\ub4dc\ub294 \ud074\ub7ec\uc2a4\ud130\uc758 \uc77c\ubd80\ub85c\uc11c, \ucfe0\ubc84\ub124\ud2f0\uc2a4\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ud30c\ub4dc\uc758 \ucee8\ud14c\uc774\ub108\uac00 \uc2e4\ud589\ub418\ub294 \uacf3\uc785\ub2c8\ub2e4. Minion Kubernetes\uc758 \ucd08\uae30 \ubc84\uc804\uc5d0\uc11c \uc6cc\ucee4 \uba38\uc2e0(\uc989, \ud30c\ub4dc\ub97c \uc2e4\ud589\ud558\ub294 …<\/p>\n","protected":false},"author":1,"featured_media":6246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226,33],"tags":[129],"class_list":["post-4589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-tech-notes","tag-kubernetes"],"_links":{"self":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4589"}],"version-history":[{"count":46,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions"}],"predecessor-version":[{"id":6247,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/4589\/revisions\/6247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/media\/6246"}],"wp:attachment":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}