{"id":5102,"date":"2021-10-06T21:42:56","date_gmt":"2021-10-06T13:42:56","guid":{"rendered":"http:\/\/blog.ywdevops.cn\/?p=5102"},"modified":"2023-09-21T15:33:50","modified_gmt":"2023-09-21T07:33:50","slug":"k8s-5","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2021\/10\/06\/k8s-5\/","title":{"rendered":"k8s\u8bc1\u4e66\u66f4\u65b0"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u901a\u8fc7kubeadm\u5b89\u88c5\u7684k8s\u96c6\u7fa4\uff0c\u9ed8\u8ba4\u6709\u6548\u671f\u4e3a1\u5e74\uff0c\u5230\u671f\u540e\u5982\u679c\u4e0d\u66f4\u65b0\uff0c \u4f7f\u7528kubectl\u65f6\u4f1a\u51fa\u73b0\u5982\u4e0b\u63d0\u793a\uff1a`Unable to connect to the server: x509: certificate has expired or is not yet valid` <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1\u3001\u67e5\u770b\u8bc1\u4e66\u8fc7\u671f\u60c5\u51b5\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u547d\u4ee4kubeadm alpha certs check-expiration\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubeadm certs check-expiration #\u65b0\u547d\u4ee4\uff0ckubeadm alpha certs check-expiration\u5df2\u5f03\u7528<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"914\" height=\"468\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/32-1.png\" alt=\"\" class=\"wp-image-5103\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/32-1.png 914w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/32-1-300x154.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/32-1-768x393.png 768w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/32-1-600x307.png 600w\" sizes=\"auto, (max-width: 914px) 100vw, 914px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u67e5\u770b\u6839CA\u8bc1\u4e66\u7684\u6709\u6548\u671f\uff08\u5341\u5e74\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdb\u5165\u76ee\u5f55\u5e76\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cd \/etc\/kubernetes\/pki\nls | grep ca.crt | xargs -I {} openssl x509 -text -in {} | grep -i \"Not After\"\r<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"198\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/33-1024x198.png\" alt=\"\" class=\"wp-image-5104\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/33-1024x198.png 1024w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/33-300x58.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/33-768x148.png 768w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/33-600x116.png 600w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/33.png 1051w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u8bc1\u4e66\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"793\" height=\"650\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/34-1.png\" alt=\"\" class=\"wp-image-5106\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/34-1.png 793w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/34-1-300x246.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/34-1-768x630.png 768w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/34-1-600x492.png 600w\" sizes=\"auto, (max-width: 793px) 100vw, 793px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kubernetes \u96c6\u7fa4\u6839\u8bc1\u4e66<\/strong>\u5305\u62ec \/etc\/kubernetes\/pki\/ca.crt \u548c\/etc\/kubernetes\/pki\/ca.key \uff0c \u7531\u6b64\u6839\u8bc1\u4e66\u7b7e\u53d1\u7684\u8bc1\u4e66\u6709: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li> kube-apiserver \u7ec4\u4ef6\u6301\u6709\u7684\u670d\u52a1\u7aef\u8bc1\u4e66:  \/etc\/kubernetes\/pki\/apiserver.crt \u3001 \/etc\/kubernetes\/pki\/apiserver.key <\/li>\n\n\n\n<li> kubelet \u7ec4\u4ef6\u6301\u6709\u7684\u5ba2\u6237\u7aef\u8bc1\u4e66 \uff1a \/etc\/kubernetes\/pki\/apiserver-kubelet-client.crt \u3001 \/etc\/kubernetes\/pki\/apiserver-kubelet-client.key <\/li>\n<\/ul>\n\n\n\n<p class=\"has-luminous-vivid-amber-background-color has-background wp-block-paragraph\">\u6ce8\u610f\uff1a kubelet \u4e0a\u4e00\u822c\u4e0d\u4f1a\u660e\u786e\u6307\u5b9a\u670d\u52a1\u7aef\u8bc1\u4e66, \u800c\u662f\u53ea\u6307\u5b9a ca \u6839\u8bc1\u4e66, \u8ba9 kubelet \u6839\u636e\u672c\u5730\u4e3b\u673a\u4fe1\u606f\u81ea\u52a8\u751f\u6210\u670d\u52a1\u7aef\u8bc1\u4e66\u5e76\u4fdd\u5b58\u5230\u914d\u7f6e\u7684cert-dir\u6587\u4ef6\u5939\u4e2d <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6c47\u805a\u5c42(aggregator)\u8bc1\u4e66\uff1a<\/strong> \/etc\/kubernetes\/pki\/front-proxy-ca.crt \u3001 \/etc\/kubernetes\/pki\/front-proxy-ca.key \uff0c \u7531\u6b64\u6839\u8bc1\u4e66\u7b7e\u53d1\u7684\u8bc1\u4e66\u53ea\u6709\u4e00\u7ec4: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li> \u4ee3\u7406\u7aef\u4f7f\u7528\u7684\u5ba2\u6237\u7aef\u8bc1\u4e66, \u7528\u4f5c\u4ee3\u7528\u6237\u4e0e kube-apiserver \u8ba4\u8bc1 \uff1a \/etc\/kubernetes\/pki\/front-proxy-client.crt \u3001 \/etc\/kubernetes\/pki\/front-proxy-client.key <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>etcd \u96c6\u7fa4\u6839\u8bc1\u4e66\uff1a<\/strong> \/etc\/kubernetes\/pki\/etcd\/ca.crt \u3001 \/etc\/kubernetes\/pki\/etcd\/ca.key \uff0c \u7531\u6b64\u6839\u8bc1\u4e66\u7b7e\u53d1\u673a\u6784\u7b7e\u53d1\u7684\u8bc1\u4e66\u6709: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li> etcd server \u6301\u6709\u7684\u670d\u52a1\u7aef\u8bc1\u4e66 \uff1a \/etc\/kubernetes\/pki\/etcd\/server.crt \u3001 \/etc\/kubernetes\/pki\/etcd\/server.key <\/li>\n\n\n\n<li> peer \u96c6\u7fa4\u4e2d\u8282\u70b9\u4e92\u76f8\u901a\u4fe1\u4f7f\u7528\u7684\u5ba2\u6237\u7aef\u8bc1\u4e66 \uff1a \/etc\/kubernetes\/pki\/etcd\/peer.crt \u3001 \/etc\/kubernetes\/pki\/etcd\/peer.key <\/li>\n\n\n\n<li> pod \u4e2d\u5b9a\u4e49 Liveness \u63a2\u9488\u4f7f\u7528\u7684\u5ba2\u6237\u7aef\u8bc1\u4e66 \uff1a \/etc\/kubernetes\/pki\/etcd\/healthcheck-client.crt \u3001 \/etc\/kubernetes\/pki\/etcd\/healthcheck-client.key <\/li>\n\n\n\n<li> \u914d\u7f6e\u5728 kube-apiserver \u4e2d\u7528\u6765\u4e0e etcd server \u505a\u53cc\u5411\u8ba4\u8bc1\u7684\u5ba2\u6237\u7aef\u8bc1\u4e66 \uff1a \/etc\/kubernetes\/pki\/apiserver-etcd-client.crt \u3001 \/etc\/kubernetes\/pki\/apiserver-etcd-client.key <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Serveice Account\u79d8\u94a5\uff1a<\/strong> \/etc\/kubernetes\/pki\/sa.key \u3001 \/etc\/kubernetes\/pki\/sa.pub \uff0c \u8fd9\u7ec4\u7684\u5bc6\u94a5\u5bf9\u513f\u4ec5\u63d0\u4f9b\u7ed9 kube-controller-manager \u4f7f\u7528. kube-controller-manager \u901a\u8fc7 sa.key \u5bf9 token \u8fdb\u884c\u7b7e\u540d, master \u8282\u70b9\u901a\u8fc7\u516c\u94a5 sa.pub \u8fdb\u884c\u7b7e\u540d\u7684\u9a8c\u8bc1. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4\u3001\u5907\u4efd\u8bc1\u4e66\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u5c06\/etc\/kubernetes\u76ee\u5f55\u6574\u4e2a\u6253\u5305\u5373\u53ef\uff0c\u6267\u884c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">tar -zcvf kubernetes_cert.tgz \/etc\/kubernetes<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5\u3001\u66f4\u65b0\u8bc1\u4e66\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u547d\u4ee4kubeadm certs renew all \u5373\u53ef\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"359\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/35-1-1024x359.png\" alt=\"\" class=\"wp-image-5109\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/35-1-1024x359.png 1024w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/35-1-300x105.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/35-1-768x269.png 768w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/35-1-600x210.png 600w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/35-1.png 1255w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e\u62f7\u8d1dadmin.conf\u6587\u4ef6\u5230.kube\u8def\u5f84\u4e0b\uff0c\u6267\u884c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> cp \/etc\/kubernetes\/admin.conf     \/root\/.kube\/config <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6\u3001\u518d\u6b21\u6267\u884c\u547d\u4ee4\u67e5\u770b\u8bc1\u4e66\u8fc7\u671f\u65f6\u95f4\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"990\" height=\"400\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/36-1.png\" alt=\"\" class=\"wp-image-5110\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/36-1.png 990w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/36-1-300x121.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/36-1-768x310.png 768w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/10\/36-1-600x242.png 600w\" sizes=\"auto, (max-width: 990px) 100vw, 990px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">7\u3001\u6267\u884c\u547d\u4ee4\u91cd\u542f kube-apiserver\u3001 kube-controller\u3001kube-scheduler\u3001etcd\uff0c\u6267\u884c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">docker ps |grep -E &#8216;k8s_kube-apiserver|k8s_kube-controller-manager|k8s_kube-scheduler|k8s_etcd_etcd&#8217; | awk -F &#8216; &#8216; &#8216;{print $1}&#8217; |xargs docker restart<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u901a\u8fc7kubeadm\u5b89\u88c5\u7684k8s\u96c6\u7fa4\uff0c\u9ed8\u8ba4\u6709\u6548\u671f\u4e3a1\u5e74\uff0c\u5230\u671f\u540e\u5982\u679c\u4e0d\u66f4\u65b0\uff0c \u4f7f\u7528kubectl\u65f6\u4f1a\u51fa\u73b0\u5982\u4e0b\u63d0\u793a\uff1a [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":5111,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93,23],"tags":[],"class_list":["post-5102","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-rong"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/5102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/comments?post=5102"}],"version-history":[{"count":7,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/5102\/revisions"}],"predecessor-version":[{"id":14943,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/5102\/revisions\/14943"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media\/5111"}],"wp:attachment":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media?parent=5102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/categories?post=5102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/tags?post=5102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}