{"id":1449,"date":"2023-03-23T22:16:02","date_gmt":"2023-03-23T14:16:02","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1449"},"modified":"2023-04-28T20:49:34","modified_gmt":"2023-04-28T12:49:34","slug":"kubernetes-cluster-troubleshooting","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/23\/kubernetes-cluster-troubleshooting\/","title":{"rendered":"Kubernetes\u96c6\u7fa4\u95ee\u9898\u6392\u67e5"},"content":{"rendered":"

\u67e5\u770b\u7cfb\u7edfEvent\u4e8b\u4ef6<\/h2>\n
kubectl describe pod <PodName> --namespace=<NAMESPACE><\/code><\/pre>\n
<\/p>\n
\u8be5\u547d\u4ee4\u53ef\u4ee5\u663e\u793aPod\u521b\u5efa\u65f6\u7684\u914d\u7f6e\u5b9a\u4e49\u3001\u72b6\u6001\u7b49\u4fe1\u606f\u548c\u6700\u8fd1\u7684Event\u4e8b\u4ef6\uff0c\u4e8b\u4ef6\u4fe1\u606f\u53ef\u7528\u4e8e\u6392\u9519\u3002\u4f8b\u5982\u5f53Pod\u72b6\u6001\u4e3aPending\uff0c\u53ef\u901a\u8fc7\u67e5\u770bEvent\u4e8b\u4ef6\u786e\u8ba4\u539f\u56e0\uff0c\u4e00\u822c\u539f\u56e0\u6709\u51e0\u79cd\uff1a<\/p>\n
    \n
  • \u6ca1\u6709\u53ef\u7528\u7684Node\u53ef\u8c03\u5ea6<\/li>\n
  • \u5f00\u542f\u4e86\u8d44\u6e90\u914d\u989d\u7ba1\u7406\u5e76\u4e14\u5f53\u524dPod\u7684\u76ee\u6807\u8282\u70b9\u4e0a\u6070\u597d\u6ca1\u6709\u53ef\u7528\u7684\u8d44\u6e90<\/li>\n
  • \u6b63\u5728\u4e0b\u8f7d\u955c\u50cf\uff08\u955c\u50cf\u62c9\u53d6\u8017\u65f6\u592a\u4e45\uff09\u6216\u955c\u50cf\u4e0b\u8f7d\u5931\u8d25<\/li>\n<\/ul>\n
    kubectl describe\u8fd8\u53ef\u4ee5\u67e5\u770b\u5176\u5b83k8s\u5bf9\u8c61\uff1aNODE<\/code>,RC<\/code>,Service<\/code>,Namespace<\/code>,Secrets<\/code>\u3002<\/p>\n
    Pod<\/h3>\n
    kubectl describe pod <PodName> --namespace=<NAMESPACE><\/code><\/pre>\n
    NODE<\/h3>\n
    kubectl describe node 192.168.1.20<\/code><\/pre>\n
    RC<\/h3>\n
    kubectl describe rc nginx-rc-1.17.0 --namespace=appblog<\/code><\/pre>\n
    NAMESPACE<\/h3>\n
    kubectl describe namespace appblog<\/code><\/pre>\n
    Service<\/h3>\n
    kubectl describe service nginx-service-1170 --namespace=appblog<\/code><\/pre>\n
    \u67e5\u770b\u5bb9\u5668\u65e5\u5fd7<\/h2>\n
    \u67e5\u770b\u6307\u5b9apod\u7684\u65e5\u5fd7<\/h3>\n
    kubectl logs <pod_name> -n appblog<\/code><\/pre>\n
    kubectl logs -f <pod_name> -n appblog    #\u7c7b\u4f3c tail -f \u7684\u65b9\u5f0f\u67e5\u770b\nkubectl logs --tail 200 -f <pod_name> -n appblog    #\u7c7b\u4f3c tail -f \u7684\u65b9\u5f0f\u67e5\u770b\nkubectl logs --tail 200 -f <pod_name> -n appblog |more    #\u7c7b\u4f3c tail -f \u7684\u65b9\u5f0f\u67e5\u770b<\/code><\/pre>\n
    \u67e5\u770b\u4e0a\u4e00\u4e2apod\u7684\u65e5\u5fd7<\/h3>\n
    kubectl logs -p <pod_name><\/code><\/pre>\n
    \u67e5\u770b\u6307\u5b9apod\u4e2d\u6307\u5b9a\u5bb9\u5668\u7684\u65e5\u5fd7<\/h3>\n
    kubectl logs <pod_name> -c <container_name><\/code><\/pre>\n
    kubectl logs –help<\/h3>\n
    \u67e5\u770bk8s\u670d\u52a1\u65e5\u5fd7<\/h2>\n
    journalctl<\/h3>\n
    \u5728Linux\u7cfb\u7edf\u4e0asystemd\u7cfb\u7edf\u6765\u7ba1\u7406kubernetes\u670d\u52a1\uff0c\u5e76\u4e14journal\u7cfb\u7edf\u4f1a\u63a5\u7ba1\u670d\u52a1\u7a0b\u5e8f\u7684\u8f93\u51fa\u65e5\u5fd7\uff0c\u53ef\u4ee5\u901a\u8fc7systemctl status<\/code>\u6216journalctl -u -f<\/code>\u6765\u67e5\u770bkubernetes\u670d\u52a1\u7684\u65e5\u5fd7\u3002<\/p>\n
    journalctl -u kube-scheduler\n\njournalctl -xefu kubelet\n\njournalctl -u kube-apiserver\n\njournalctl -u kubelet |tail\n\njournalctl -xe<\/code><\/pre>\n
    docker logs<\/h3>\n
    docker logs \u5bb9\u5668id<\/code><\/pre>\n
    \u65e5\u5fd7\u6587\u4ef6<\/h3>\n
    \u4e5f\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u65e5\u5fd7\u5b58\u653e\u76ee\u5f55\u6765\u4fdd\u5b58\u548c\u67e5\u770b\u65e5\u5fd7<\/p>\n
    \u2013logtostderr=false<\/code>: \u4e0d\u8f93\u51fa\u5230stderr
    \n\u2013log-dir=\/var\/log\/kubernetes<\/code>: \u65e5\u5fd7\u7684\u5b58\u653e\u76ee\u5f55
    \n\u2013alsologtostderr=false<\/code>: \u8bbe\u7f6e\u4e3atrue\u8868\u793a\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6\u4e5f\u8f93\u51fa\u5230stderr
    \n\u2013v=0<\/code>: glog\u7684\u65e5\u5fd7\u7ea7\u522b
    \n\u2013vmodule=gfs*=2,test*=4<\/code>: glog\u57fa\u4e8e\u6a21\u5757\u7684\u8be6\u7ec6\u65e5\u5fd7\u7ea7\u522b<\/p>\n
    \u5e38\u89c1\u95ee\u9898<\/h2>\n
    Pod\u72b6\u6001\u4e00\u76f4\u4e3aPending<\/h3>\n
    kubectl describe <pod_name> --namespace=<NAMESPACE><\/code><\/pre>\n
      \n
    • \u6b63\u5728\u4e0b\u8f7d\u955c\u50cf\u4f46\u62c9\u53d6\u4e0d\u4e0b\u6765\uff08\u955c\u50cf\u62c9\u53d6\u8017\u65f6\u592a\u4e45\uff09[\u4e00\u822c\u90fd\u662f\u8be5\u539f\u56e0]<\/li>\n
    • \u6ca1\u6709\u53ef\u7528\u7684Node\u53ef\u8c03\u5ea6<\/li>\n
    • \u5f00\u542f\u4e86\u8d44\u6e90\u914d\u989d\u7ba1\u7406\u5e76\u4e14\u5f53\u524dPod\u7684\u76ee\u6807\u8282\u70b9\u4e0a\u6070\u597d\u6ca1\u6709\u53ef\u7528\u7684\u8d44\u6e90<\/li>\n<\/ul>\n
      \u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n
        \n
      • \u67e5\u770b\u8be5POD\u6240\u5728\u5bbf\u4e3b\u673a\u4e0e\u955c\u50cf\u4ed3\u5e93\u4e4b\u95f4\u7684\u7f51\u7edc\u662f\u5426\u6709\u95ee\u9898\uff0c\u53ef\u4ee5\u624b\u52a8\u62c9\u53d6\u955c\u50cf<\/li>\n
      • \u5220\u9664POD\u5b9e\u4f8b\uff0c\u8ba9POD\u8c03\u5ea6\u5230\u522b\u7684\u5bbf\u4e3b\u673a\u4e0a<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
        \u67e5\u770b\u7cfb\u7edfEvent\u4e8b\u4ef6 kubectl describe pod <PodName> –name […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[356],"class_list":["post-1449","post","type-post","status-publish","format-standard","hentry","category-k8s","tag-kubernetes"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1449"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1449\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}