{"id":1719,"date":"2023-03-26T07:34:48","date_gmt":"2023-03-25T23:34:48","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1719"},"modified":"2023-04-23T21:37:01","modified_gmt":"2023-04-23T13:37:01","slug":"goodbye-docker-5-minute-transform-containerd","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/26\/goodbye-docker-5-minute-transform-containerd\/","title":{"rendered":"\u518d\u89c1 Docker \uff015\u5206\u949f\u8f6c\u578b containerd \uff01"},"content":{"rendered":"

Docker\u4f5c\u4e3a\u975e\u5e38\u6d41\u884c\u7684\u5bb9\u5668\u6280\u672f\uff0c\u4e4b\u524d\u7ecf\u5e38\u6709\u6587\u7ae0\u8bf4\u5b83\u88abK8S\u5f03\u7528\u4e86\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u53e6\u4e00\u79cd\u5bb9\u5668\u6280\u672fcontainerd\uff01\u5176\u5b9econtainerd\u53ea\u662f\u4eceDocker\u4e2d\u5206\u79bb\u51fa\u6765\u7684\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u4f7f\u7528\u8d77\u6765\u548cDocker\u5e76\u6ca1\u6709\u5565\u533a\u522b\uff0c\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e0bcontainerd\u7684\u4f7f\u7528\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

containerd\u7b80\u4ecb<\/h2>\n

<\/p>\n

containerd\u662f\u4e00\u4e2a\u5de5\u4e1a\u7ea7\u6807\u51c6\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5b83\u5f3a\u8c03\u7b80\u5355\u6027\u3001\u5065\u58ee\u6027\u548c\u53ef\u79fb\u690d\u6027\u3002containerd\u53ef\u4ee5\u5728\u5bbf\u4e3b\u673a\u4e2d\u7ba1\u7406\u5b8c\u6574\u7684\u5bb9\u5668\u751f\u547d\u5468\u671f\uff0c\u5305\u62ec\u5bb9\u5668\u955c\u50cf\u7684\u4f20\u8f93\u548c\u5b58\u50a8\u3001\u5bb9\u5668\u7684\u6267\u884c\u548c\u7ba1\u7406\u3001\u5b58\u50a8\u548c\u7f51\u7edc\u7b49\u3002<\/p>\n

Docker vs containerd<\/h2>\n

containerd\u662f\u4eceDocker\u4e2d\u5206\u79bb\u51fa\u6765\u7684\u4e00\u4e2a\u9879\u76ee\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u73b0\u5728\u5b83\u6210\u4e86Kubernete\u5bb9\u5668\u8fd0\u884c\u65f6\u66f4\u597d\u7684\u9009\u62e9\u3002<\/p>\n

\u4e0d\u4ec5\u4ec5\u662fDocker\uff0c\u8fd8\u6709\u5f88\u591a\u4e91\u5e73\u53f0\u4e5f\u652f\u6301containerd\u4f5c\u4e3a\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5177\u4f53\u53c2\u8003\u4e0b\u56fe\u3002<\/p>\n

\"containerd\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u67b6\u6784\"<\/p>\n

K8S CRI<\/h2>\n

K8S\u53d1\u5e03CRI\uff08Container Runtime Interface\uff09\uff0c\u7edf\u4e00\u4e86\u5bb9\u5668\u8fd0\u884c\u65f6\u63a5\u53e3\uff0c\u51e1\u662f\u652f\u6301CRI\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u7686\u53ef\u4f5c\u4e3aK8S\u7684\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\u3002<\/p>\n

K8S\u4e3a\u4ec0\u4e48\u8981\u653e\u5f03\u4f7f\u7528Docker\u4f5c\u4e3a\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u800c\u4f7f\u7528containerd\u5462\uff1f<\/p>\n

\u5982\u679c\u4f60\u4f7f\u7528Docker\u4f5c\u4e3aK8S\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u8bdd\uff0ckubelet\u9700\u8981\u5148\u8981\u901a\u8fc7dockershim\u53bb\u8c03\u7528Docker\uff0c\u518d\u901a\u8fc7Docker\u53bb\u8c03\u7528containerd\u3002<\/p>\n

\"K8S\u901a\u8fc7Docker\u64cd\u4f5ccontainer\u6d41\u7a0b\"<\/p>\n

\u5982\u679c\u4f60\u4f7f\u7528containerd\u4f5c\u4e3aK8S\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u8bdd\uff0c\u7531\u4e8econtainerd\u5185\u7f6e\u4e86CRI\u63d2\u4ef6\uff0ckubelet\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528containerd\u3002<\/p>\n

\"K8S\u901a\u8fc7containerd\u64cd\u4f5ccontainer\u6d41\u7a0b\"<\/p>\n

\u4f7f\u7528containerd\u4e0d\u4ec5\u6027\u80fd\u63d0\u9ad8\u4e86\uff08\u8c03\u7528\u94fe\u53d8\u77ed\u4e86\uff09\uff0c\u800c\u4e14\u8d44\u6e90\u5360\u7528\u4e5f\u4f1a\u53d8\u5c0f\uff08Docker\u4e0d\u662f\u4e00\u4e2a\u7eaf\u7cb9\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5177\u6709\u5927\u91cf\u5176\u4ed6\u529f\u80fd\uff09\u3002<\/p>\n

containerd\u4f7f\u7528<\/h2>\n

\u5176\u5b9e\u53ea\u8981\u628a\u6211\u4eec\u4e4b\u524d\u4f7f\u7528\u7684docker<\/code>\u547d\u4ee4\u6539\u4e3acrictl<\/code>\u547d\u4ee4\u5373\u53ef\u64cd\u4f5ccontainerd\uff0c\u6bd4\u5982\u67e5\u770b\u6240\u6709\u8fd0\u884c\u4e2d\u7684\u5bb9\u5668\uff1b<\/p>\n

# crictl ps\nCONTAINER           IMAGE               CREATED                  STATE               NAME                ATTEMPT             POD ID\n4ca73ded41bb6       3b0b04aa3473f       Less than a second ago   Running             helm                20                  21103f0058872\n3bb5767a81954       296a6d5035e2d       About a minute ago       Running             coredns             1                   af887263bd869\na5e34c24be371       0346349a1a640       About a minute ago       Running             nginx               1                   89defc6008501<\/code><\/pre>\n
\u67e5\u770b\u6240\u6709\u955c\u50cf\uff1b<\/p>\n
# crictl images\nIMAGE                                      TAG                 IMAGE ID            SIZE\ndocker.io\/library\/nginx                    1.10                0346349a1a640       71.4MB\ndocker.io\/rancher\/coredns-coredns          1.8.0               296a6d5035e2d       12.9MB\ndocker.io\/rancher\/klipper-helm             v0.4.3              3b0b04aa3473f       50.7MB\ndocker.io\/rancher\/local-path-provisioner   v0.0.14             e422121c9c5f9       13.4MB\ndocker.io\/rancher\/metrics-server           v0.3.6              9dd718864ce61       10.5MB\ndocker.io\/rancher\/pause                    3.1                 da86e6ba6ca19       327kB<\/code><\/pre>\n
\u8fdb\u5165\u5bb9\u5668\u5185\u90e8\u6267\u884cbash\u547d\u4ee4\uff0c\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u662f\u53ea\u80fd\u4f7f\u7528\u5bb9\u5668ID\uff0c\u4e0d\u652f\u6301\u4f7f\u7528\u5bb9\u5668\u540d\u79f0\uff1a<\/p>\n
# crictl exec -it a5e34c24be371 \/bin\/bash<\/code><\/pre>\n
\u67e5\u770b\u5bb9\u5668\u4e2d\u5e94\u7528\u8d44\u6e90\u5360\u7528\u60c5\u51b5\uff0c\u53ef\u4ee5\u53d1\u73b0\u5360\u7528\u975e\u5e38\u4f4e\uff1a<\/p>\n
# crictl stats\nCONTAINER           CPU %               MEM                 DISK                INODES\n3bb5767a81954       0.54                14.27MB             254B                14\na5e34c24be371       0.00                2.441MB             339B                16<\/code><\/pre>\n
\u603b\u7ed3<\/h2>\n
\u4eceDocker\u8f6c\u578bcontainerd\u975e\u5e38\u7b80\u5355\uff0c\u57fa\u672c\u6ca1\u6709\u4ec0\u4e48\u95e8\u69db\u3002\u53ea\u8981\u628a\u4e4b\u524dDocker\u547d\u4ee4\u4e2d\u7684docker<\/code>\u6539\u4e3acrictl<\/code>\u57fa\u672c\u5c31\u53ef\u4ee5\u4e86\uff0c\u679c\u7136\u662f\u540c\u4e00\u4e2a\u516c\u53f8\u51fa\u54c1\u7684\u4e1c\u897f\uff0c\u7528\u6cd5\u90fd\u4e00\u6837\u3002\u6240\u4ee5\u4e0d\u7ba1K8S\u5230\u5e95\u5f03\u7528\u4e0d\u5f03\u7528Docker\uff0c\u5bf9\u6211\u4eec\u5f00\u53d1\u8005\u4f7f\u7528\u6765\u8bf4\uff0c\u57fa\u672c\u6ca1\u5565\u5f71\u54cd\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
Docker\u4f5c\u4e3a\u975e\u5e38\u6d41\u884c\u7684\u5bb9\u5668\u6280\u672f\uff0c\u4e4b\u524d\u7ecf\u5e38\u6709\u6587\u7ae0\u8bf4\u5b83\u88abK8S\u5f03\u7528\u4e86\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u53e6\u4e00\u79cd\u5bb9\u5668\u6280\u672fcontain […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[179,10],"tags":[430],"class_list":["post-1719","post","type-post","status-publish","format-standard","hentry","category-docker","category-k8s","tag-containerd"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1719","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=1719"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1719\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}