{"id":46177,"date":"2021-11-15T11:00:08","date_gmt":"2021-11-15T02:00:08","guid":{"rendered":"https:\/\/www.creationline.com\/?p=46177"},"modified":"2023-08-29T15:21:08","modified_gmt":"2023-08-29T06:21:08","slug":"k0s%e3%81%a8kubeadm%e3%81%a7konnectivity%e3%81%ae%e5%8b%95%e3%81%8d%e3%82%92%e8%aa%bf%e3%81%b9%e3%81%a6%e3%81%bf%e3%82%88%e3%81%86-k0s-mirantis-kubernetes-konnectivity","status":"publish","type":"post","link":"https:\/\/www.creationline.com\/tech-blog\/cloudnative\/kubernetes\/46177","title":{"rendered":"k0s\u3068kubeadm\u3067Konnectivity\u306e\u52d5\u304d\u3092\u8abf\u3079\u3066\u307f\u3088\u3046 #k0s #mirantis #kubernetes #konnectivity"},"content":{"rendered":"<p><a href=\"https:\/\/k0sproject.io\/\">k0s<\/a>\u3068\u306f\u3001\u8efd\u91cf\u304b\u3064\u4f7f\u3044\u3084\u3059\u3044\u3001100%\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eKubernetes\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002\u4e3b\u306a\u7279\u5fb4\u3068\u3057\u3066\u306f\u3001<\/p>\n<ul>\n<li>\u30d5\u30eb\u6a5f\u80fd\u306eKubernetes\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3059\u3079\u3066\u3092\u5358\u4e00\u30d0\u30a4\u30ca\u30ea\u306b\u540c\u68b1<\/li>\n<li>k0s\u7279\u6709\u306e\u6539\u5909\u3092\u52a0\u3048\u3066\u3044\u306a\u3044\u3001CNCF\u8a8d\u5b9a\u306e\u7d14\u6b63\u306aKubernetes\u3092\u30c7\u30d7\u30ed\u30a4<\/li>\n<li>\u6700\u4f4e\u5fc5\u8981\u30ea\u30bd\u30fc\u30b91vCPU\u30fb1GB\u30e1\u30e2\u30ea\u30fb2GB\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u30b7\u30f3\u30b0\u30eb\u30ce\u30fc\u30c9\u304b\u3089\u3001HA\u69cb\u6210\u306e\u5927\u898f\u6a21\u30af\u30e9\u30b9\u30bf\u307e\u3067\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>Konnectivity\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u5316<\/li>\n<\/ul>\n<p>\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u3088\u308a\u8a73\u3057\u3044\u60c5\u5831\u306f<a href=\"https:\/\/docs.k0sproject.io\/\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u672c\u7a3f\u3067\u306f\u3001k0s\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u5316\u3055\u308c\u3066\u3044\u308b<a href=\"https:\/\/kubernetes.io\/docs\/tasks\/extend-kubernetes\/setup-konnectivity\/\">Konnectivity<\/a>\u306e\u52d5\u304d\u306b\u3064\u3044\u3066\u3001\u305d\u308c\u3092\u6301\u305f\u306a\u3044<a href=\"https:\/\/kubernetes.io\/docs\/setup\/production-environment\/tools\/kubeadm\/\">kubeadm<\/a>\u3068\u6bd4\u8f03\u3057\u3066\u8abf\u3079\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>Konnectivity\u306e\u7c21\u5358\u306a\u8aac\u660e\u306b\u3064\u3044\u3066\u306f\u4ee5\u524d\u306e\u8a18\u4e8b\u300c<a href=\"\/lab\/44052\">k0s\u3067EC2\u30de\u30b9\u30bf\u30fc\u3068Virtualbox\u30ef\u30fc\u30ab\u30fc\u306eKubernetes\u30af\u30e9\u30b9\u30bf\u3092\u4f5c\u6210\u3057\u3066\u307f\u3088\u3046<\/a>\u300d\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>kubeadm\u306e\u5834\u5408(Konnectivity\u306a\u3057)<\/h2>\n<p>\u30d1\u30d6\u30ea\u30c3\u30af\u30e9\u30a6\u30c9(AWS)\u4e0a\u306eKubernetes\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3068\u3001\u30ed\u30fc\u30ab\u30ebPC\u4e0a\u306eVirtualBox\u30ef\u30fc\u30ab\u30fc\u3068\u3044\u3046\u69cb\u6210\u3092\u3001kubeadm\u3067Konnectivity\u306a\u3057\u3067\u69cb\u7bc9\u3057\u305f\u5834\u5408\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>AMI: Ubuntu Server 20.04 LTS (HVM), SSD Volume Type (x86)<\/li>\n<li>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30bf\u30a4\u30d7: t2.medium (2vCPU\u30fb4GiB\u30e1\u30e2\u30ea)<\/li>\n<li>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u3067\u30ed\u30fc\u30ab\u30ebPC\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u5168\u8a31\u53ef\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3067\u4f5c\u6210\u3057\u305f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u7528\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u306f <span style=\"background-color: green; color: white;\">54.213.94.242<\/span> \u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u30ed\u30fc\u30ab\u30ebPC\u306bVagrant\u3068VirtualBox\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u307f\u30672\u53f0\u306e\u30b2\u30b9\u30c8\u304c\u6e96\u5099\u6e08\u307f\u3067\u3042\u308a\u3001\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u306f <span style=\"background-color: red; color: white;\">XXX.YYY.ZZZ.254<\/span> \u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u9069\u5b9c\u8aad\u307f\u66ff\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u307e\u305a <span style=\"background-color: green; color: white;\">54.213.94.242<\/span> \u306b\u3066 <a href=\"https:\/\/kubernetes.io\/docs\/setup\/production-environment\/tools\/kubeadm\/install-kubeadm\/\">Installing kubeadm<\/a> \u306e\u624b\u9806\u306b\u5f93\u3063\u3066 kubeadm \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f<a href=\"\/lab\/39567\">CRI\u306bDocker\u3067\u306f\u306a\u304fcontainerd\u3092\u4f7f\u7528<\/a>\u3057\u3066\u304a\u308a\u3001 --control-plane-endpoint \u306b <span style=\"background-color: green; color: white;\">54.213.94.242<\/span> \u306eFQDN\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-17-165:~$ sudo kubeadm init --ignore-preflight-errors=NumCPU \\\n--pod-network-cidr=10.244.0.0\/16 --service-cidr=10.244.0.0\/16 \\\n--control-plane-endpoint=ec2-54-213-94-242.us-west-2.compute.amazonaws.com \\\n--cri-socket=\/run\/containerd\/containerd.sock\n<\/pre>\n<p>\u3053\u308c\u3067\u51fa\u529b\u3055\u308c\u305f kubeadm join \u30b3\u30de\u30f3\u30c9\u3092\u3001\u30ed\u30fc\u30ab\u30ebPC\u306eVirtualBox\u30b2\u30b9\u30c82\u53f0\u3067\u5b9f\u65bd\u3057\u307e\u3059\u3002<\/p>\n<p>kubectl get nodes \u3068 netstat \u3067\u72b6\u6cc1\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-17-165:~$ kubectl get node\nNAME STATUS ROLES AGE VERSION\nip-172-31-17-165 NotReady control-plane,master 106s v1.22.3\nnode01 NotReady 41s v1.22.3\nnode02 NotReady 9s v1.22.3\nubuntu@ip-172-31-17-165:~$ sudo netstat -atnp | grep XXX.YYY\ntcp 0 36 172.31.17.165:22 XXX.YYY.ZZZ.254:49670 ESTABLISHED 1213\/sshd: ubuntu [\ntcp6 0 0 172.31.17.165:6443 XXX.YYY.ZZZ.254:40038 TIME_WAIT -\ntcp6 0 0 172.31.17.165:6443 XXX.YYY.ZZZ.254:40032 ESTABLISHED 8865\/kube-apiserver\ntcp6 0 0 172.31.17.165:6443 XXX.YYY.ZZZ.254:40060 ESTABLISHED 8865\/kube-apiserver\ntcp6 0 0 172.31.17.165:6443 XXX.YYY.ZZZ.254:40078 ESTABLISHED 8865\/kube-apiserver\ntcp6 0 0 172.31.17.165:6443 XXX.YYY.ZZZ.254:40020 ESTABLISHED 8865\/kube-apiserver\n<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306b\u30ef\u30fc\u30ab\u30fc(node01,node02)\u304c\u30af\u30e9\u30b9\u30bf\u306b\u53c2\u52a0\u3067\u304d\u3066\u304a\u308a\u3001\u30ef\u30fc\u30ab\u30fc\u5074\u304b\u3089kube-apiserver\u306b\u63a5\u7d9a\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u3053\u306e\u72b6\u614b\u3067<a href=\"https:\/\/docs.projectcalico.org\/getting-started\/kubernetes\/quickstart\">Calico\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a>\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3082\u30ef\u30fc\u30ab\u30fc\u3082\u540c\u3058EC2\u4e0a\u306b\u3042\u308b\u5834\u5408\u3068\u7570\u306a\u308a\u3001\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u307e\u305b\u3093\u304c\u3001\u672c\u7a3f\u3067\u306f\u672c\u8cea\u7684\u306a\u90e8\u5206\u3067\u306f\u306a\u3044\u305f\u3081\u89e3\u6c7a\u306f\u8a66\u307f\u307e\u305b\u3093\u3002<\/p>\n<p>\u3067\u306f\u3001\u65e2\u306b\u8d77\u52d5\u3057\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0Pod\u306b\u5bfe\u3057\u3066kubectl logs\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-17-165:~$ kubectl -n kube-system get pod -o wide\nNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\ncoredns-78fcd69978-4s4v7 0\/1 Pending 0 17m\ncoredns-78fcd69978-n7vwc 0\/1 Pending 0 17m\netcd-ip-172-31-17-165 1\/1 Running 4 17m 172.31.17.165 ip-172-31-17-165\nkube-apiserver-ip-172-31-17-165 1\/1 Running 4 17m 172.31.17.165 ip-172-31-17-165\nkube-controller-manager-ip-172-31-17-165 1\/1 Running 5 17m 172.31.17.165 ip-172-31-17-165\nkube-proxy-f6bkh 1\/1 Running 0 17m 172.31.17.165 ip-172-31-17-165\nkube-proxy-p8f9f 1\/1 Running 0 16m 192.168.123.22 node02\nkube-proxy-w5v8x 1\/1 Running 0 16m 192.168.123.21 node01\nkube-scheduler-ip-172-31-17-165 1\/1 Running 5 17m 172.31.17.165 ip-172-31-17-165\n<\/pre>\n<p>\u3053\u3053\u3067\u306fnode01\u3067\u8d77\u52d5\u3057\u3066\u3044\u308bkube-proxy-w5v8x\u306b\u5bfe\u3057\u3066kubectl logs\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-17-165:~$ kubectl -n kube-system logs kube-proxy-w5v8x\n^Z\n[1]+ Stopped kubectl -n kube-system logs kube-proxy-w5v8x\n<\/pre>\n<p>\u306a\u304b\u306a\u304b\u7d50\u679c\u304c\u8fd4\u3063\u3066\u3053\u306a\u3044\u306e\u3067CTRL+Z\u3067\u4e00\u65e6\u505c\u6b62\u3057\u3001netstat\u3067\u63a5\u7d9a\u72b6\u6cc1\u3092\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-17-165:~$ sudo netstat -atnp | grep SYN\ntcp 0 1 172.31.17.165:48460 192.168.123.21:10250 SYN_SENT 8865\/kube-apiserver\n<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306bkube-apiserver\u304b\u3089\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3063\u3066\u3044\u308b\u30ed\u30fc\u30ab\u30ebPC\u306enode01\u306b\u63a5\u7d9a\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u5f53\u7136\u3053\u308c\u306f\u4e0d\u53ef\u80fd\u3067\u3042\u308b\u305f\u3081\u3001<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nError from server: Get &quot;https:\/\/192.168.123.21:10250\/containerLogs\/kube-system\/kube-proxy-w5v8x\/kube-proxy&quot;: dial tcp 192.168.123.21:10250: i\/o timeout\n[1]+ Exit 1 kubectl -n kube-system logs kube-proxy-w5v8x\n<\/pre>\n<p>\u3057\u3070\u3089\u304f\u3059\u308b\u3068\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002kubectl exec\u3084kubectl port-forward\u3082\u540c\u69d8\u3067\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-17-165:~$ kubectl -n kube-system exec kube-proxy-w5v8x -- sh\nError from server: error dialing backend: dial tcp 192.168.123.21:10250: i\/o timeout\nubuntu@ip-172-31-17-165:~$ kubectl -n kube-system port-forward kube-proxy-w5v8x 8888:8888\nerror: error upgrading connection: error dialing backend: dial tcp 192.168.123.21:10250: i\/o timeout\n<\/pre>\n<p>\u4f55\u304c\u8d77\u304d\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f <a href=\"https:\/\/kubernetes.io\/docs\/home\/\">Kubernetes\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30ef\u30fc\u30ab\u30fc\u30ce\u30fc\u30c9\u306fKubelet API\u3092\u53d7\u3051\u4ed8\u3051\u308b\u305f\u3081<a href=\"https:\/\/kubernetes.io\/docs\/reference\/ports-and-protocols\/#node\">10250\/tcp\u3092\u958b\u653e<\/a>\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002\u3067\u306fKubelet API\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f \u7c21\u5358\u306b\u306f\u5148\u307b\u3069\u306e<a href=\"https:\/\/kubernetes.io\/docs\/concepts\/architecture\/control-plane-node-communication\/#apiserver-to-kubelet\">kubelet logs\/exec\/port-forward\u306b\u5229\u7528<\/a>\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46180\" src=\"\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/11\/kubeadm-without-konnectivity.png\" alt=\"\" width=\"221\" height=\"311\" align=\"right\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/11\/kubeadm-without-konnectivity.png 443w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/11\/kubeadm-without-konnectivity-256x360.png 256w\" sizes=\"auto, (max-width: 221px) 100vw, 221px\" \/><\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30e9\u30a6\u30c9\u4e0a\u306b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3001\u30ed\u30fc\u30ab\u30ebPC\u4e0a\u306b\u30ef\u30fc\u30ab\u30fc\u3068\u3044\u3046\u69cb\u6210\u3067\u5358\u7d14\u306bKubernetes\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3068\u3001\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<br \/>\n\u56f3\u306e\u9752\u77e2\u5370\u306e\u3088\u3046\u306bkubelet\u304b\u3089kube-apiserver\u3078\u306e\u63a5\u7d9a\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001\u9ec4\u77e2\u5370\u306e\u3088\u3046\u306bkube-apiserver\u304b\u3089kubelet\u3078\u306e\u63a5\u7d9a\u306f\u4e0d\u53ef\u80fd\u3067\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<h2>k0s\u306e\u5834\u5408(Konnectivity\u3042\u308a)<\/h2>\n<p>\u3067\u306f\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30e9\u30a6\u30c9(AWS)\u4e0a\u306eKubernetes\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3068\u3001\u30ed\u30fc\u30ab\u30ebPC\u4e0a\u306eVirtualBox\u30ef\u30fc\u30ab\u30fc\u3068\u3044\u3046\u69cb\u6210\u3092\u3001k0s\u3067\u69cb\u7bc9\u3057\u305f\u5834\u5408\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u5185\u5bb9\u3068\u3057\u3066\u306f\u4ee5\u524d\u306e\u8a18\u4e8b\u300c<a href=\"\/lab\/44052\">k0s\u3067EC2\u30de\u30b9\u30bf\u30fc\u3068Virtualbox\u30ef\u30fc\u30ab\u30fc\u306eKubernetes\u30af\u30e9\u30b9\u30bf\u3092\u4f5c\u6210\u3057\u3066\u307f\u3088\u3046<\/a>\u300d\u3068\u307b\u307c\u540c\u4e00\u3067\u3059\u3002<\/p>\n<ul>\n<li>AMI: Ubuntu Server 20.04 LTS (HVM), SSD Volume Type (x86)<\/li>\n<li>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30bf\u30a4\u30d7: t2.medium (2vCPU\u30fb4GiB\u30e1\u30e2\u30ea)<\/li>\n<li>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u3067\u30ed\u30fc\u30ab\u30ebPC\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u5168\u8a31\u53ef\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3067\u4f5c\u6210\u3057\u305f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u7528\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u306f <span style=\"background-color: green; color: white;\">34.221.254.215<\/span> \u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u30ed\u30fc\u30ab\u30ebPC\u306bVagrant\u3068VirtualBox\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u307f\u30672\u53f0\u306e\u30b2\u30b9\u30c8\u304c\u6e96\u5099\u6e08\u307f\u3067\u3042\u308a\u3001\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u306f <span style=\"background-color: red; color: white;\">XXX.YYY.ZZZ.254<\/span> \u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u9069\u5b9c\u8aad\u307f\u66ff\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u4ee5\u524d\u306e\u8a18\u4e8b\u300c<a href=\"\/lab\/44052\">k0s\u3067EC2\u30de\u30b9\u30bf\u30fc\u3068Virtualbox\u30ef\u30fc\u30ab\u30fc\u306eKubernetes\u30af\u30e9\u30b9\u30bf\u3092\u4f5c\u6210\u3057\u3066\u307f\u3088\u3046<\/a>\u300d\u3068\u540c\u3058\u304f\u3001spec.api.externalAddress\u30ad\u30fc\u3068spec.api.sans\u30ad\u30fc\u306bEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9 <span style=\"background-color: green; color: white;\">34.221.254.215<\/span> \u3092\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067OK\u3067\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"diff\">\nubuntu@ip-172-31-30-231:~$ k0s default-config &gt; k0s.yaml\nubuntu@ip-172-31-30-231:~$ cp k0s.yaml k0s.yaml.orig\nubuntu@ip-172-31-30-231:~$ vi k0s.yaml\nubuntu@ip-172-31-30-231:~$ diff -u k0s.yaml.orig k0s.yaml\n--- k0s.yaml.orig 2021-11-10 03:16:32.102876955 +0000\n+++ k0s.yaml 2021-11-10 03:18:00.956487688 +0000\n@@ -5,10 +5,12 @@\nspec:\napi:\naddress: 172.31.30.231\n+ externalAddress: 34.221.254.215\nport: 6443\nk0sApiPort: 9443\nsans:\n- 172.31.30.231\n+ - 34.221.254.215\nstorage:\ntype: etcd\netcd:\n<\/pre>\n<p>\u3053\u308c\u3067\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3001\u624b\u9806\u306b\u5f93\u3063\u3066\u30ed\u30fc\u30ab\u30ebPC\u306eVirtualBox\u30b2\u30b9\u30c82\u53f0\u3092\u767b\u9332\u3057\u3001Kubernetes\u30af\u30e9\u30b9\u30bf\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002<\/p>\n<p>\u3067\u306f\u3001kubectl get nodes \u3068 netstat \u3067\u72b6\u6cc1\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-30-231:~$ k0s kubectl get nodes\nNAME STATUS ROLES AGE VERSION\nnode01 Ready 11m v1.22.3+k0s\nnode02 Ready 11m v1.22.3+k0s\nubuntu@ip-172-31-30-231:~$ sudo netstat -atnp | grep XXX.YYY\ntcp 0 36 172.31.30.231:22 XXX.YYY.ZZZ.254:53788 ESTABLISHED 633\/sshd: ubuntu [p\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57870 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57838 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57856 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57898 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57884 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57864 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57854 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57808 ESTABLISHED 1038\/kube-apiserver\ntcp6 0 0 172.31.30.231:8132 XXX.YYY.ZZZ.254:55562 ESTABLISHED 1086\/konnectivity-s\ntcp6 0 0 172.31.30.231:8132 XXX.YYY.ZZZ.254:55564 ESTABLISHED 1086\/konnectivity-s\ntcp6 0 0 172.31.30.231:6443 XXX.YYY.ZZZ.254:57886 ESTABLISHED 1038\/kube-apiserver\n<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306b\u30ef\u30fc\u30ab\u30fc(node01,node02)\u304c\u30af\u30e9\u30b9\u30bf\u306b\u53c2\u52a0\u3067\u304d\u3066\u304a\u308a\u3001\u30ef\u30fc\u30ab\u30fc\u5074\u304b\u3089kube-apiserver\u3068\u3001\u52a0\u3048\u3066konnectivity-server\u306b\u63a5\u7d9a\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001k0s\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u81ea\u52d5\u7684\u306b<a href=\"https:\/\/www.kube-router.io\/\">Kube-Router<\/a>\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u3001kubeadm\u306e\u3088\u3046\u306b\u5225\u9014CNI\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30b7\u30b9\u30c6\u30e0Pod\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-30-231:~$ k0s kubectl -n kube-system get pod -o wide\nNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\ncoredns-77b4ff5f78-l7hkv 1\/1 Running 0 20m 10.244.0.5 node01\ncoredns-77b4ff5f78-lddjd 1\/1 Running 0 13m 10.244.0.3 node01\nkonnectivity-agent-gtqd7 1\/1 Running 0 11m 10.244.1.2 node02\nkonnectivity-agent-rd98z 1\/1 Running 0 12m 10.244.0.4 node01\nkube-proxy-hzv4c 1\/1 Running 0 13m 192.168.123.22 node02\nkube-proxy-k9kx9 1\/1 Running 0 14m 192.168.123.21 node01\nkube-router-p749h 1\/1 Running 0 13m 192.168.123.22 node02\nkube-router-rdh9q 1\/1 Running 0 14m 192.168.123.21 node01\nmetrics-server-5b898fd875-glfj2 1\/1 Running 0 20m 10.244.0.2 node01\n<\/pre>\n<p>\u3067\u306f\u3001node01\u3067\u8d77\u52d5\u3057\u3066\u3044\u308bkube-proxy-k9kx9\u306b\u5bfe\u3057\u3066kubectl logs\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-30-231:~$ k0s kubectl -n kube-system logs kube-proxy-k9kx9 | head -5\nI1110 01:52:46.187150 1 node.go:172] Successfully retrieved node IP: 192.168.123.21\nI1110 01:52:46.187236 1 server_others.go:140] Detected node IP 192.168.123.21\nI1110 01:52:46.262041 1 server_others.go:206] kube-proxy running in dual-stack mode, IPv4-primary\nI1110 01:52:46.262115 1 server_others.go:212] Using iptables Proxier.\nI1110 01:52:46.262140 1 server_others.go:219] creating dualStackProxier for iptables.\n<\/pre>\n<p>\u6b63\u3057\u304f\u30ed\u30b0\u3092\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002kubectl logs\u3092\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u52d5\u4f5c\u3055\u305b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u63a5\u7d9a\u72b6\u614b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nubuntu@ip-172-31-30-231:~$ k0s kubectl -n kube-system logs -f kube-proxy-k9kx9 &gt; \/dev\/null 2&gt; \/dev\/null &amp;\n[1] 1354\nubuntu@ip-172-31-30-231:~$ sudo netstat -atnp | grep SYN\nubuntu@ip-172-31-30-231:~$\n<\/pre>\n<p>Konnectivity\u304c\u52d5\u4f5c\u3057\u3066\u3044\u306a\u3044kubeadm\u3067\u306e\u30af\u30e9\u30b9\u30bf\u69cb\u7bc9\u3067\u306f\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u306ekube-apiserver\u304b\u3089\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306ekubelet\u306b\u63a5\u7d9a\u3057\u3088\u3046\u3068\u3057\u3066\u5931\u6557\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001Konnectivity\u304c\u52d5\u4f5c\u3057\u3066\u3044\u308bk0s\u306b\u3088\u308b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u306f\u305d\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u8d77\u304d\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>Konnectivity\u306e\u52d5\u4f5c\u72b6\u6cc1\u3092node01\u3067\u8abf\u3079\u3066\u307f\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u5358\u7d14\u306bnode01\u30b2\u30b9\u30c8\u4e0a\u3067netstat\u3057\u3066\u3082\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30af\u30e9\u30a6\u30c9\u4e0a\u306ekonnectivity-server\u3078\u306e\u63a5\u7d9a\u72b6\u614b\u306f\u898b\u3048\u307e\u305b\u3093\u3002\u306a\u305c\u306a\u3089\u3001node01\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308bkonnectivity-agent\u306fPod\u3068\u3057\u3066\u52d5\u3044\u3066\u3044\u308b\u305f\u3081\u3001\u5225\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u306b\u5b58\u5728\u3057\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002konnectivity-agent\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u3092\u8abf\u3079\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u307e\u305a\u3001konnectivity-agent (proxy-agent)\u306ePID\u304b\u3089\u3001ip netns identify\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3063\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u540d\u3092\u5272\u308a\u51fa\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nvagrant@node01:~$ ps auxwwwf|grep &#039;[ p]roxy-agent&#039;\nroot 4247 0.0 0.1 715128 13956 ? Ssl 10:54 0:01 _ \/proxy-agent --logtostderr=true --ca-cert=\/var\/run\/secrets\/kubernetes.io\/serviceaccount\/ca.crt --proxy-server-host=34.221.254.215 --proxy-server-port=8132 --service-account-token-path=\/var\/run\/secrets\/tokens\/konnectivity-agent-token\nvagrant@node01:~$ sudo ip netns identify 4247\ncni-2b1226ec-c0f3-1436-5440-1e1349bccee5\n<\/pre>\n<p>konnectivity-agent (proxy-agent)\u304c\u52d5\u4f5c\u3057\u3066\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u3053\u3061\u3089\u3067netstat\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\">\nvagrant@node01:~$ sudo ip netns exec cni-2b1226ec-c0f3-1436-5440-1e1349bccee5 netstat -atnp | grep 34.221.254.215\ntcp 0 0 10.244.0.4:59084 34.221.254.215:8132 ESTABLISHED 4247\/proxy-agent\n<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306bkonnectivity-agent\u304c\u3001EC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9(<span style=\"background-color: green; color: white;\">34.221.254.215<\/span>)\u4e0a\u306ekonnectivity-server (8132\/tcp)\u306b\u63a5\u7d9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-46181\" src=\"\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/11\/k0s-with-konnectivity.png\" alt=\"\" width=\"221\" height=\"311\" align=\"right\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/11\/k0s-with-konnectivity.png 443w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/11\/k0s-with-konnectivity-256x360.png 256w\" sizes=\"auto, (max-width: 221px) 100vw, 221px\" \/><\/p>\n<p>Konnectivity\u3092\u6709\u52b9\u306b\u3057\u3066kubectl logs\/exec\/port-forward\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001kube-apiserver\u304b\u3089konnectivity-server\u3078\u3001konnectivity-server\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308bkonnectivity-agent\u304b\u3089kubelet\u3078\u3068\u3001konnectivity-server\/agent\u3092\u4ecb\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>kubeadm\u3067\u30af\u30e9\u30b9\u30bf\u69cb\u7bc9\u3057\u305f\u5834\u5408\u306f<a href=\"https:\/\/kubernetes.io\/docs\/tasks\/extend-kubernetes\/setup-konnectivity\/\">Set up Konnectivity service<\/a>\u306e\u624b\u9806\u306b\u5f93\u3063\u3066Konnectivity\u3092\u6709\u52b9\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001k0s\u306a\u3089\u3070\u30c7\u30d5\u30a9\u30eb\u30c8\u3067Konnectivity\u304c\u6709\u52b9\u306a\u306e\u3067\u3059\u3050\u306b\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u672c\u7a3f\u3067\u306fKonnectivity\u306b\u3064\u3044\u3066\u3001\u305d\u308c\u304c\u306a\u3044kubeadm\u3067Kubernetes\u30af\u30e9\u30b9\u30bf\u3092\u69cb\u7bc9\u3057\u305f\u5834\u5408\u3068\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u306b\u306a\u308bk0s\u3067Kubernetes\u30af\u30e9\u30b9\u30bf\u3092\u69cb\u7bc9\u3057\u305f\u5834\u5408\u306e\u305d\u308c\u305e\u308c\u3067\u3001kube-apiserver\u3068kubelet\u306e\u52d5\u304d\u3082\u542b\u3081\u3066\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>Konnectivity\u306b\u3088\u3063\u3066kube-apiserver\u304b\u3089\u76f4\u63a5\u758e\u901a\u3067\u304d\u306a\u3044kubelet\u306b\u5bfe\u3057\u3066\u3082\u901a\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u307e\u305fk0s\u306fKonnectivity\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u306a\u306e\u3067\u3001k0s\u306e\u901a\u5e38\u306e\u30af\u30e9\u30b9\u30bf\u69cb\u7bc9\u624b\u9806\u3067\u3082\u3059\u3050\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30d6\u30ea\u30c3\u30af\u30af\u30e9\u30a6\u30c9\u306b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3092\u7f6e\u304d\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084IoT\u6a5f\u5668\u3092\u30ef\u30fc\u30ab\u30fc\u3068\u3059\u308bKubernetes\u30af\u30e9\u30b9\u30bf\u3092\u69cb\u7bc9\u3059\u308b\u969b\u306b\u3001\u8efd\u91cf\u304b\u3064\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u306aKonnectivity\u3092\u5099\u3048\u308bk0s\u306f\u9069\u3057\u305f\u9078\u629e\u80a2\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u672c\u30d6\u30ed\u30b0\u3067\u306f\u5f15\u304d\u7d9a\u304dk0s\u306e\u3055\u307e\u3056\u307e\u306a\u60c5\u5831\u3092\u767a\u4fe1\u3057\u3066\u3044\u304f\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>k0s\u3068\u306f\u3001\u8efd\u91cf\u304b\u3064\u4f7f\u3044\u3084\u3059\u3044\u3001100%\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eKubernetes\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002\u4e3b\u306a\u7279\u5fb4\u3068\u3057\u3066\u306f\u3001 \u30d5\u30eb\u6a5f\u80fd\u306eKubernetes\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3059\u3079\u3066\u3092\u5358\u4e00\u30d0\u30a4\u30ca\u30ea\u306b\u540c\u68b1 k0s\u7279\u6709\u306e\u6539\u5909 [&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":41227,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[31,122,540],"tags":[],"class_list":["post-46177","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-higuchi","category-kubernetes","category-mirantis"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>k0s\u3068kubeadm\u3067Konnectivity\u306e\u52d5\u304d\u3092\u8abf\u3079\u3066\u307f\u3088\u3046 #k0s #mirantis #kubernetes #konnectivity - Tech 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