{"id":2050,"date":"2021-11-24T17:36:41","date_gmt":"2021-11-24T09:36:41","guid":{"rendered":"https:\/\/199604.com\/?p=2050"},"modified":"2021-11-24T17:36:41","modified_gmt":"2021-11-24T09:36:41","slug":"docker-swarm-%e5%ad%a6%e4%b9%a0%e6%89%8b%e6%9c%ad","status":"publish","type":"post","link":"https:\/\/199604.com\/2050","title":{"rendered":"Docker Swarm \u5b66\u4e60\u624b\u672d"},"content":{"rendered":"

Docker Swarm \u5b66\u4e60\u624b\u672d<\/h1>\n

Docker Swarm \u8282\u70b9\u4ecb\u7ecd<\/h2>\n

\u8fd0\u884c Docker \u7684\u4e3b\u673a\u53ef\u4ee5\u4e3b\u52a8\u521d\u59cb\u5316\u4e00\u4e2a Swarm<\/code> \u96c6\u7fa4\u6216\u8005\u52a0\u5165\u4e00\u4e2a\u5df2\u5b58\u5728\u7684 Swarm<\/code> \u96c6\u7fa4\uff0c\u8fd9\u6837\u8fd9\u4e2a\u8fd0\u884c Docker \u7684\u4e3b\u673a\u5c31\u6210\u4e3a\u4e00\u4e2a Swarm<\/code> \u96c6\u7fa4\u7684\u8282\u70b9 (node<\/code>) \u3002<\/p>\n

\u8282\u70b9\u5206\u4e3a\u7ba1\u7406 (manager<\/code>) \u8282\u70b9\u548c\u5de5\u4f5c (worker<\/code>) \u8282\u70b9\u3002<\/p>\n

\u7ba1\u7406\u8282\u70b9\u7528\u4e8e Swarm<\/code> \u96c6\u7fa4\u7684\u7ba1\u7406\uff0cdocker swarm<\/code> \u547d\u4ee4\u57fa\u672c\u53ea\u80fd\u5728\u7ba1\u7406\u8282\u70b9\u6267\u884c\uff08\u8282\u70b9\u9000\u51fa\u96c6\u7fa4\u547d\u4ee4 docker swarm leave<\/code> \u53ef\u4ee5\u5728\u5de5\u4f5c\u8282\u70b9\u6267\u884c\uff09\u3002\u4e00\u4e2a Swarm<\/code> \u96c6\u7fa4\u53ef\u4ee5\u6709\u591a\u4e2a\u7ba1\u7406\u8282\u70b9\uff0c\u4f46\u53ea\u6709\u4e00\u4e2a\u7ba1\u7406\u8282\u70b9\u53ef\u4ee5\u6210\u4e3a leader<\/code>\uff0cleader<\/code> \u901a\u8fc7 raft<\/code> \u534f\u8bae\u5b9e\u73b0\u3002<\/p>\n

\u5de5\u4f5c\u8282\u70b9\u662f\u4efb\u52a1\u6267\u884c\u8282\u70b9\uff0c\u7ba1\u7406\u8282\u70b9\u5c06\u670d\u52a1 (service<\/code>) \u4e0b\u53d1\u81f3\u5de5\u4f5c\u8282\u70b9\u6267\u884c\u3002\u7ba1\u7406\u8282\u70b9\u9ed8\u8ba4\u4e5f\u4f5c\u4e3a\u5de5\u4f5c\u8282\u70b9\u3002\u4f60\u4e5f\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u8ba9\u670d\u52a1\u53ea\u8fd0\u884c\u5728\u7ba1\u7406\u8282\u70b9\u3002<\/p>\n

\"img\"<\/div><\/p>\n

Docker Swarm \u670d\u52a1\u548c\u4efb\u52a1\u4ecb\u7ecd<\/h2>\n

\u4efb\u52a1 \uff08Task<\/code>\uff09\u662f Swarm<\/code> \u4e2d\u7684\u6700\u5c0f\u7684\u8c03\u5ea6\u5355\u4f4d\uff0c\u76ee\u524d\u6765\u8bf4\u5c31\u662f\u4e00\u4e2a\u5355\u4e00\u7684\u5bb9\u5668\u3002<\/p>\n

\u670d\u52a1 \uff08Services<\/code>\uff09 \u662f\u6307\u4e00\u7ec4\u4efb\u52a1\u7684\u96c6\u5408\uff0c\u670d\u52a1\u5b9a\u4e49\u4e86\u4efb\u52a1\u7684\u5c5e\u6027\u3002\u670d\u52a1\u6709\u4e24\u79cd\u6a21\u5f0f\uff1a<\/p>\n

    \n
  • replicated services<\/code> \u6309\u7167\u4e00\u5b9a\u89c4\u5219\u5728\u5404\u4e2a\u5de5\u4f5c\u8282\u70b9\u4e0a\u8fd0\u884c\u6307\u5b9a\u4e2a\u6570\u7684\u4efb\u52a1\u3002<\/li>\n
  • global services<\/code> \u6bcf\u4e2a\u5de5\u4f5c\u8282\u70b9\u4e0a\u8fd0\u884c\u4e00\u4e2a\u4efb\u52a1<\/li>\n<\/ul>\n

    \u4e24\u79cd\u6a21\u5f0f\u901a\u8fc7 docker service create<\/code> \u7684 --mode<\/code> \u53c2\u6570\u6307\u5b9a\u3002<\/p>\n

    \"img\"<\/div><\/p>\n

    \u642d\u5efa Swarm \u96c6\u7fa4<\/h2>\n
    [root@owy-bd-c16-21 ~]# docker swarm --help \n\nUsage:  docker swarm COMMAND\nCommands:\n  ca          Display and rotate the root CA # \u663e\u793a\u548c\u8f6e\u8f6croot\u7684ca\n  init        Initialize a swarm # \u521d\u59cb\u5316\u96c6\u7fa4\n  join        Join a swarm as a node and\/or manager # \u52a0\u5165\u96c6\u7fa4\n  join-token  Manage join tokens # \u83b7\u53d6\u4ee4\u724c\n  leave       Leave the swarm # \u9000\u51fa\u96c6\u7fa4\n  unlock      Unlock swarm \n  unlock-key  Manage the unlock key\n  update      Update the swarm  # \u66f4\u65b0\u96c6\u7fa4\n<\/code><\/pre>\n
    \u521d\u59cb\u5316\u96c6\u7fa4<\/h3>\n
    \u683c\u5f0f:docker swarm init<\/code><\/p>\n
    [root@owy-bd-c16-21 ~]# docker swarm init --help\nUsage:  docker swarm init [OPTIONS]\nOptions:\n      --advertise-addr string                  Advertised address (format: <ip|interface>[:port])\n      --autolock                               Enable manager autolocking (requiring an unlock key to start a stopped manager)\n      --availability string                    Availability of the node (\"active\"|\"pause\"|\"drain\") (default \"active\")\n      --cert-expiry duration                   Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s)\n      --data-path-addr string                  Address or interface to use for data path traffic (format: <ip|interface>)\n      --data-path-port uint32                  Port number to use for data path traffic (1024 - 49151). If no value is set or is set to 0, the default port (4789) is used.\n      --default-addr-pool ipNetSlice           default address pool in CIDR format (default [])\n      --default-addr-pool-mask-length uint32   default address pool subnet mask length (default 24)\n      --dispatcher-heartbeat duration          Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s)\n      --external-ca external-ca                Specifications of one or more certificate signing endpoints\n      --force-new-cluster                      Force create a new cluster from current state\n      --listen-addr node-addr                  Listen address (format: <ip|interface>[:port]) (default 0.0.0.0:2377)\n      --max-snapshots uint                     Number of additional Raft snapshots to retain\n      --snapshot-interval uint                 Number of log entries between Raft snapshots (default 10000)\n      --task-history-limit int                 Task history retention limit (default 5)\n<\/code><\/pre>\n
    \u5728\u5df2\u7ecf\u5b89\u88c5\u597d Docker \u7684\u4e3b\u673a\u4e0a\u6267\u884c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n
    \u6267\u884c docker swarm init<\/code> \u547d\u4ee4\u7684\u8282\u70b9\u81ea\u52a8\u6210\u4e3a\u7ba1\u7406\u8282\u70b9\u3002<\/p>\n
    \u5982\u679c\u4f60\u7684 Docker \u4e3b\u673a\u6709\u591a\u4e2a\u7f51\u5361\uff0c\u62e5\u6709\u591a\u4e2a IP\uff0c\u5fc5\u987b\u4f7f\u7528 --advertise-addr<\/code> \u6307\u5b9a IP<\/p>\n
    docker swarm init --advertise-addr 10.228.237.108<\/code><\/p>\n
    [root@owy-bd-c16-21 ~]# docker swarm init --advertise-addr 10.228.237.108\nSwarm initialized: current node (soz5k82c0kn8045ia9izfiy2o) is now a manager.\nTo add a worker to this swarm, run the following command:\n    docker swarm join --token SWMTKN-1-0ezupkgyc2vppqlaym2koemfgwm4q4tw8tije1g9kxqmovl5au-2oofp2scwaqzohdqhsaxcd2w0 10.228.237.108:2377\nTo add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.\n<\/code><\/pre>\n
    \u83b7\u53d6\u4ee4\u724c,\u5e76\u52a0\u5165<\/h3>\n
    \u5728manager\u673a\u5668\u6267\u884c,\u8ba9\u5176\u4ed6\u670d\u52a1\u5668\u52a0\u5165<\/p>\n
    # \u83b7\u53d6\u5de5\u4f5c\u8005\u4ee4\u724c\ndocker swarm join-token worker\n\n# \u83b7\u53d6\u7ba1\u7406\u8005\u4ee4\u724c\ndocker swarm join-token manager\n<\/code><\/pre>\n
    \u79bb\u5f00\u96c6\u7fa4<\/h3>\n
    \u5de5\u4f5c\u8282\u70b9:docker swarm leave<\/code><\/p>\n
    \n  \u7ba1\u7406\u8282\u70b9\u9ed8\u8ba4\u662f\u4e0d\u5141\u8bb8\u79bb\u5f00\u96c6\u7fa4\u7684,\u7f51\u4e0a\u8bf4\u53ef\u901a\u8fc7docker swarm leave -f<\/code> \u9000\u51fa,\u4f46\u662f\u4f1a\u9020\u6210\u5f88\u5927\u7684\u9519\u8bef.\u56e0\u6b64\u6211\u81ea\u4e2a\u6d4b\u8bd5\u65f6\u5148\u628a \u7ba1\u7406\u8282\u70b9\u964d\u4e3a\u5de5\u4f5c\u8282\u70b9:docker node demote \u670d\u52a1id<\/code>,\u5728\u8fdb\u884c\u9000\u51fa\u96c6\u7fa4….<\/p>\n
    [root@owy-bd-c16-21 ~]# docker node --help \n\nUsage:  docker node COMMAND\n\nManage Swarm nodes\n\nCommands:\n  demote      Demote one or more nodes from manager in the swarm # \u4ece\u7ba1\u7406\u8282\u70b9\u964d\u7ea7\u4e3a\u5de5\u4f5c\u8282\u70b9\n  inspect     Display detailed information on one or more nodes # \u663e\u793a\u8be6\u60c5\u4fe1\u606f\n  ls          List nodes in the swarm # \u67e5\u8be2\u5217\u8868\n  promote     Promote one or more nodes to manager in the swarm # \u4ece\u5de5\u4f5c\u8282\u70b9\u5347\u7ea7\u4e3a\u7ba1\u7406\u8282\u70b9\n  ps          List tasks running on one or more nodes, defaults to current node # \u67e5\u8be2\u8fd0\u884c\u4efb\u52a1\n  rm          Remove one or more nodes from the swarm # \u5220\u9664\u8282\u70b9\n  update      Update a node # \u66f4\u65b0\u8282\u70b9\n<\/code><\/pre>\n<\/blockquote>\n
    \u67e5\u770b\u96c6\u7fa4\u4fe1\u606f:<\/h3>\n
    \u5728\u7ba1\u7406\u8282\u70b9\u4f7f\u7528 docker node ls<\/code> \u67e5\u770b\u96c6\u7fa4\u3002<\/p>\n
    [root@owy-bd-c16-21 ~]# docker node ls\nID                            HOSTNAME        STATUS    AVAILABILITY   MANAGER STATUS   ENGINE VERSION\nkapqvw15476aswk9fiq7my6wv     owy-bd-c16-18   Ready     Active         Reachable        20.10.11\nfokja54a2tyimuxdtoongawb2     owy-bd-c16-19   Ready     Active                          20.10.11\nwdg0tl5qct8ibzqfio4t2l0xb     owy-bd-c16-20   Ready     Active                          20.10.11\nsoz5k82c0kn8045ia9izfiy2o *   owy-bd-c16-21   Ready     Active         Leader           20.10.11\n<\/code><\/pre>\n
    \u90e8\u7f72Swarm \u670d\u52a1<\/h2>\n
    [root@owy-bd-c16-21 ~]# docker service --help \n\nUsage:  docker service COMMAND\n\nCommands:\n  create      Create a new service # \u521b\u5efa\u670d\u52a1\n  inspect     Display detailed information on one or more services #\u67e5\u770b\u8be6\u7ec6\u4fe1\u606f\n  logs        Fetch the logs of a service or task # \u67e5\u770b\u65e5\u5fd7\n  ls          List services # \u67e5\u770b\u670d\u52a1\n  ps          List the tasks of one or more services # \u5217\u51fa\u4e00\u4e2a\u6216\u591a\u4e2a\u670d\u52a1\u7684\u4efb\u52a1\n  rm          Remove one or more services # \u5220\u9664\u670d\u52a1\n  rollback    Revert changes to a service's configuration # \u56de\u6eda\u670d\u52a1\n  scale       Scale one or multiple replicated services # \u52a8\u6001\u590d\u5236\u670d\u52a1(\u52a8\u6001\u6269\u5c55)\n  update      Update a service #\u66f4\u65b0\u670d\u52a1\n<\/code><\/pre>\n
    \u65b0\u5efa\u670d\u52a1<\/strong><\/h3>\n
    \u7c7b\u4f3cdocker run<\/code>\u7684\u547d\u4ee4…<\/p>\n
    docker service create -p 8881:80 --name nginx nginx:latest<\/code><\/p>\n
    docker service create --replicas 3 -p 8881:80 --name nginx nginx:latest<\/code><\/p>\n
    \u67e5\u770b\u670d\u52a1<\/strong><\/h3>\n
    \u4f7f\u7528 docker service ls<\/code> \u6765\u67e5\u770b\u5f53\u524d Swarm<\/code> \u96c6\u7fa4\u8fd0\u884c\u7684\u670d\u52a1\u3002<\/p>\n
    [root@owy-bd-c16-21 ~]# docker service ls\nID             NAME      MODE         REPLICAS   IMAGE          PORTS\no6lnarmuzjwc   nginx     replicated   1\/1        nginx:latest   *:8881->80\/tcp\n<\/code><\/pre>\n
    \u4f7f\u7528 docker service ps<\/code> \u6765\u67e5\u770b\u67d0\u4e2a\u670d\u52a1\u7684\u8be6\u60c5\u3002<\/p>\n
    [root@owy-bd-c16-21 ~]# docker service ps nginx\nID             NAME          IMAGE          NODE            DESIRED STATE   CURRENT STATE             ERROR                              PORTS\n1swm97itvxxr   nginx.1       nginx:latest   owy-bd-c16-18   Running         Running 14 minutes ago      \n<\/code><\/pre>\n
    \u4f7f\u7528 docker service logs<\/code> \u6765\u67e5\u770b\u67d0\u4e2a\u670d\u52a1\u7684\u65e5\u5fd7\u3002<\/p>\n
    \u670d\u52a1\u4f38\u7f29<\/h2>\n
    \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 docker service scale<\/code> \u5bf9\u4e00\u4e2a\u670d\u52a1\u8fd0\u884c\u7684\u5bb9\u5668\u6570\u91cf\u8fdb\u884c\u4f38\u7f29\u3002<\/p>\n
    \u5f53\u4e1a\u52a1\u5904\u4e8e\u9ad8\u5cf0\u671f\u65f6\uff0c\u6211\u4eec\u9700\u8981\u6269\u5c55\u670d\u52a1\u8fd0\u884c\u7684\u5bb9\u5668\u6570\u91cf\u3002<\/p>\n
    docker service scale nginx=5<\/code><\/p>\n
    \u5f53\u4e1a\u52a1\u5e73\u7a33\u65f6\uff0c\u6211\u4eec\u9700\u8981\u51cf\u5c11\u670d\u52a1\u8fd0\u884c\u7684\u5bb9\u5668\u6570\u91cf\u3002<\/p>\n
    docker service scale nginx=2<\/code><\/p>\n
    \u5220\u9664\u670d\u52a1<\/h2>\n
    \u4f7f\u7528 docker service rm<\/code> \u6765\u4ece Swarm<\/code> \u96c6\u7fa4\u79fb\u9664\u67d0\u4e2a\u670d\u52a1\u3002<\/p>\n
    docker service rm nginx<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"
    Docker Swarm \u5b66\u4e60\u624b\u672d Docker Swarm \u8282\u70b9\u4ecb\u7ecd \u8fd0\u884c Docker \u7684\u4e3b\u673a\u53ef\u4ee5\u4e3b\u52a8\u521d\u59cb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[332],"tags":[226,335],"class_list":["post-2050","post","type-post","status-publish","format-standard","hentry","category-docker","tag-docker","tag-docker-swarm"],"_links":{"self":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/2050","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/comments?post=2050"}],"version-history":[{"count":1,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/2050\/revisions"}],"predecessor-version":[{"id":2051,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/2050\/revisions\/2051"}],"wp:attachment":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/media?parent=2050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/categories?post=2050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/tags?post=2050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}