docker(3) 三剑客 swarm 管理

1、网络

1.1显示网络

#会看到多个网络，每一个主机都一个bridge，一个host和一个none的网络，这三种网络类型也可以在单个Docker引擎中设置，‘bridge’网络是默认的设置。安装完swarm，默认增加一个ingress网络，可以跨docker主机通讯

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test@swarm-master:~$ docker network ls NETWORK ID          NAME                DRIVER              SCOPE d50f3812d5d5        bridge              bridge              local 2757fde1e317        docker_gwbridge     bridge              local 21e9a61f76f1        host                host                local h3up3adg9aiq        ingress             overlay             swarm d78997b3be74        none                null                local

 

1.2查看网络详情

#Containers 显示本网络内容器信息

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test@swarm-master:~$ docker network inspect ingress [     {         "Name": "ingress",         "Id": "h3up3adg9aiq55aja8wahl4vn",         "Created": "2017-07-06T18:23:36.254656075+08:00",         "Scope": "swarm",         "Driver": "overlay",         "EnableIPv6": false,         "IPAM": {             "Driver": "default",             "Options": null,             "Config": [                 {                     "Subnet": "10.255.0.0/16",                     "Gateway": "10.255.0.1"                 }             ]         },         "Internal": false,         "Attachable": false,         "Ingress": true,         "ConfigFrom": {             "Network": ""         },         "ConfigOnly": false,         "Containers": {             "a40378fdf6c99c0ce138790afeb5557826500768e46b1d68db39345cc09a784c": {                 "Name": "redis3.2.qf3gonna7v3cv11s0xtdzckkf",                 "EndpointID": "068a939358f507071c28c0d7af6eaf32b962d45994f1bff847d006423134625a",                 "MacAddress": "02:42:0a:ff:00:07",                 "IPv4Address": "10.255.0.7/16",                 "IPv6Address": ""             },             "ingress-sbox": {                 "Name": "ingress-endpoint",                 "EndpointID": "3e2d69c6d1f8c925141196e162de78302fc933a16c54f7bd106c9f0524def81a",                 "MacAddress": "02:42:0a:ff:00:02",                 "IPv4Address": "10.255.0.2/16",                 "IPv6Address": ""             }         },         "Options": {             "com.docker.network.driver.overlay.vxlanid_list": "4096"         },         "Labels": {},         "Peers": [             {                 "Name": "swarm-master-ab33304ec904",                 "IP": "192.168.1.80"             },             {                 "Name": "swarm-node1-2b6c4495a64e",                 "IP": "192.168.1.73"             }         ]     } ]

1.3 自定义网络

#创建 mynet网络

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test@swarm-master:~$ docker network create -d overlay mynet 4yvkresk6qmovyifqblku9o8y test@swarm-master:~$ docker network ls NETWORK ID          NAME                DRIVER              SCOPE d50f3812d5d5        bridge              bridge              local 2757fde1e317        docker_gwbridge     bridge              local 21e9a61f76f1        host                host                local h3up3adg9aiq        ingress             overlay             swarm 4yvkresk6qmo        mynet               overlay             swarm d78997b3be74        none                null                local test@swarm-master:~$ docker network inspect mynet [     {         "Name": "mynet",         "Id": "4yvkresk6qmovyifqblku9o8y",         "Created": "0001-01-01T00:00:00Z",         "Scope": "swarm",         "Driver": "overlay",         "EnableIPv6": false,         "IPAM": {             "Driver": "default",             "Options": null,             "Config": []         },         "Internal": false,         "Attachable": false,         "Ingress": false,         "ConfigFrom": {             "Network": ""         },         "ConfigOnly": false,         "Containers": null,         "Options": {             "com.docker.network.driver.overlay.vxlanid_list": "4097"         },         "Labels": null     } ]

2、备用管理节点

#当前swarm3个节点，一个管理节点，2个node节点。

test@swarm-master:~$ docker node lsID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS0lga2p4mr8arq4gcmo8nanjcu     bogon               Ready               Active              ly3wrhojt6ekl7gni6m5akdag *   swarm-master        Ready               Active              Leaderswuqav7vdrqiltvv6ztrmzzhr     swarm-node1         Ready               Active  

#增加备用管理节点

test@swarm-master:~$ docker node promote 0lga2p4mr8arq4gcmo8nanjcuNode 0lga2p4mr8arq4gcmo8nanjcu promoted to a manager in the swarm.test@swarm-master:~$ docker node lsID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS0lga2p4mr8arq4gcmo8nanjcu     bogon               Ready               Active              Reachablely3wrhojt6ekl7gni6m5akdag *   swarm-master        Ready               Active              Leaderswuqav7vdrqiltvv6ztrmzzhr     swarm-node1         Ready               Active   

#关闭主节点，自动切换切换

test@bogon:~$ docker node lsID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS0lga2p4mr8arq4gcmo8nanjcu *   bogon               Ready               Active              Leaderly3wrhojt6ekl7gni6m5akdag     swarm-master        Ready               Active              Reachableswuqav7vdrqiltvv6ztrmzzhr     swarm-node1         Ready               Active              

# 降权为node

test@swarm-master:~$ docker node lsID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS0lga2p4mr8arq4gcmo8nanjcu     bogon               Ready               Active              ly3wrhojt6ekl7gni6m5akdag *   swarm-master        Ready               Active              Leaderswuqav7vdrqiltvv6ztrmzzhr     swarm-node1         Ready               Active

#删除节点

test@swarm-master:~$ docker node rm  ycyrm83sygt5n98ezle6lbvna