1. 说明

本文档针对docker swarm操作。 针对的系统是以一个本地的测试系统为例。其中机器信息如下，172.16.1.13作为docker swarm的管理机。

本地测试的机器列表信息：

主机名模拟的外网内网IP要部署模块mini0110.0.0.11172.16.1.11tomcat、hadoop-datanode、hbase-regionservermini0210.0.0.12172.16.1.12tomcat、hadoop-datanode、hbase-regionservermini0310.0.0.13172.16.1.13spark、zookeeper、hadoop-namnode、hbase-master、visualizer【docker swarm 状态查看】

2. docker swarm初始化

根据规划在172.16.1.13这台机器上操作：

[root@mini03 ~]# docker swarm init # 针对机器只有一个IP的情况 Error response from daemon: could not choose an IP address to advertise since this system has multiple addresses on different interfaces (172.16.1.13 on eth0 and 10.0.0.13 on eth1) - specify one with --advertise-addr [root@mini03 ~]# docker swarm init --advertise-addr 172.16.1.13 # 针对机器有多个IP的情况，需要指定一个IP，一般都是指定内网IP Swarm initialized: current node (yo5f7qb28gf6g38ve4xhcis17) is now a manager. To add a worker to this swarm, run the following command: # 在其他机器上执行，这样可以加入该swarm管理 docker swarm join --token SWMTKN-1-4929ovxh6agko49u0yokrzustjf6yzt30iv1zvwqn8d3pndm92-0kuha3sa80u2u27yca6kzdbnb 172.16.1.13:2377 To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.

得到加入到该swarm的命令

[root@mini03 ~]# docker swarm join-token worker To add a worker to this swarm, run the following command: # 在其他机器上执行，这样可以加入该swarm管理 docker swarm join --token SWMTKN-1-4929ovxh6agko49u0yokrzustjf6yzt30iv1zvwqn8d3pndm92-0kuha3sa80u2u27yca6kzdbnb 172.16.1.13:2377

3. 初始化网络

初始化一个swarm网络，让系统组件使用这个指定的网络。

[root@mini03 ~]# docker network create -d overlay --attachable zhang vu07em5fvpuojih6wgckdkdzj [root@mini03 docker-swarm]# docker network ls # 查看网络 NETWORK ID NAME DRIVER SCOPE fa8a244c6bd5 bridge bridge local 51c95dea1e5c docker_gwbridge bridge local 7a7e31f4bce8 host host local 5hgg372xwxbl ingress overlay swarm lmt3pjswf7l0 zhang overlay swarm 5ea08e9a282f none null local [root@mini03 ~]# docker network inspect zhang # 查看网络信息 [ { "Name": "zhang", "Id": "xiykborz8hn2td40ykhi20dck", "Created": "0001-01-01T00:00:00Z", "Scope": "swarm", "Driver": "overlay", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": null, "Config": [] }, "Internal": false, "Attachable": true, "Ingress": false, "ConfigFrom": { "Network": "" }, "ConfigOnly": false, "Containers": null, "Options": { "com.docker.network.driver.overlay.vxlanid_list": "4097" }, "Labels": null } ]

删除网络【慎用】

删除docker中的zhang网络

[root@mini03 docker-swarm]# docker network rm zhang zhang [root@mini03 docker-swarm]# docker network ls NETWORK ID NAME DRIVER SCOPE fa8a244c6bd5 bridge bridge local 51c95dea1e5c docker_gwbridge bridge local 7a7e31f4bce8 host host local 5hgg372xwxbl ingress overlay swarm 5ea08e9a282f none null local

4. 加入或退出swarm管理

在mini01、mini02上执行如下命令：

docker swarm join --token SWMTKN-1-4929ovxh6agko49u0yokrzustjf6yzt30iv1zvwqn8d3pndm92-0kuha3sa80u2u27yca6kzdbnb 172.16.1.13:2377

4.1. 当前swarm有哪些节点

[root@mini03 ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION 2pfwllgxpajx5aitlvcih9vsq mini01 Ready Active 17.09.0-ce zho14u85itt5l2i6cpg8fcd6t mini02 Ready Active 17.09.0-ce yo5f7qb28gf6g38ve4xhcis17 * mini03 Ready Active Leader 17.09.0-ce

4.2. 退出当前的swarm节点

# 在swarm管理机mini03上的操作 # 其中 2pfwllgxpajx5aitlvcih9vsq 是mini01在swarm机器上的ID，根据docker node ls 获取 [root@mini03 ~]# docker node rm --force 2pfwllgxpajx5aitlvcih9vsq # 如果mini01上的docker没有停止服务，那么就需要使用 --force 选项 2pfwllgxpajx5aitlvcih9vsq [root@mini03 ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION zho14u85itt5l2i6cpg8fcd6t mini02 Ready Active 17.09.0-ce yo5f7qb28gf6g38ve4xhcis17 * mini03 Ready Active Leader 17.09.0-ce ########################################## # 需要在mini01上执行的命令，这样mini01才能彻底退出swarm管理 [root@mini01 ~]# docker swarm leave Node left the swarm.

4.3. swarm管理机退出swarm

首先需要删除所有节点，然后强制退出swarm即可

[root@mini03 ~]# docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION yo5f7qb28gf6g38ve4xhcis17 * mini03 Ready Active Leader 17.09.0-ce [root@mini03 ~]# docker swarm leave --force # swarm管理机退出swarm，需要 --force 参数 Node left the swarm. [root@mini03 ~]# docker node ls Error response from daemon: This node is not a swarm manager. Use "docker swarm init" or "docker swarm join" to connect this node to swarm and try again.

4.4. 当前swarm有哪些服务

[root@mini03 ~]# docker service ls # 只是示例，不是实际数据 ID NAME MODE REPLICAS IMAGE PORTS lq7zkkal6ujt hadoop_datanode global 2/2 bde2020/hadoop-datanode:2.0.0-hadoop2.7.4-java8 ph2fu37k886b hadoop_namenode replicated 1/1 bde2020/hadoop-namenode:2.0.0-hadoop2.7.4-java8 *:50070->50070/tcp ca47u5i2ubes hbase-master replicated 1/1 bde2020/hbase-master:1.0.0-hbase1.2.6 *:16010->16010/tcp mkks4oa2ppcn hbase-regionserver-1 replicated 1/1 bde2020/hbase-regionserver:1.0.0-hbase1.2.6 j4mhizg4j67p hbase-regionserver-2 replicated 1/1 bde2020/hbase-regionserver:1.0.0-hbase1.2.6 yndrkc2bcpra hbase_zoo1 replicated 1/1 zookeeper:3.4.10 *:2181->2181/tcp r5ycrvo0zout spark_spark replicated 1/1 zhang/spark:latest *:4040->4040/tcp,*:7777->7777/tcp,*:8081->8081/tcp,*:18080->8080/tcp f2v091nz24rg tomcat_tomcat global 2/2 zhang/tomcat:latest *:6543->6543/tcp,*:9999->9999/tcp,*:18081->8081/tcp clfpryaerq2l visualizer replicated 1/1 dockersamples/visualizer:latest *:8080->8080/tcp

5. swarm标签管理

5.1. 标签添加

根据最开始的主机和组件部署规划，标签规划如下：在swarm管理机mini03上执行。

# 给mini01机器的标签 docker node update --label-add tomcat=true mini01 docker node update --label-add datanode=true mini01 docker node update --label-add hbase-regionserver-1=true mini01 # 给mini02机器的标签 docker node update --label-add tomcat=true mini02 docker node update --label-add datanode=true mini02 docker node update --label-add hbase-regionserver-2=true mini02 # 给mini03机器的标签 docker node update --label-add spark=true mini03 docker node update --label-add zookeeper=true mini03 docker node update --label-add namenode=true mini03 docker node update --label-add hbase-master=true mini03

5.2. 删除标签

在swarm管理机mini03上执行，示例如下：

docker node update --label-rm zookeeper mini03

5.3. 查看swarm当前的标签

在swarm管理机mini03上执行：

[root@mini03 ~]# docker node ls -q | xargs docker node inspect -f '{{.ID}}[{{.Description.Hostname}}]:{{.Spec.Labels}}' 6f7dwt47y6qvgs3yc6l00nmjd[mini01]:map[tomcat:true datanode:true hbase-regionserver-1:true] 5q2nmm2xaexhkn20z8f8ezglr[mini02]:map[tomcat:true datanode:true hbase-regionserver-2:true] ncppwjknhcwbegmliafut0718[mini03]:map[hbase-master:true namenode:true spark:true zookeeper:true]

6. 查看日志

启动容器时，查看相关日志，例如如下：

docker stack ps hadoop docker stack ps hadoop --format "{{.Name}}: {{.Error}}" docker stack ps hadoop --format "{{.Name}}: {{.Error}}" --no-trunc docker stack ps hadoop --no-trunc