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docker(2) 三剑客 docker

2018-06-27  阿青哥Joe

ubuntu     系统类型

test                       docker管理操作用户

192.168.1.73   swarm-node

192.168.1.80   swarm-master

修改使用国内镜像

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh |sudo  sh -s http://abcd1234.m.daocloud.io

 

1、swarm-master 创建集群

1.1 切换切换活跃主机

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test@bogon:~$ docker-machine ls
NAME   ACTIVE   DRIVER    STATE     URL                       SWARM   DOCKER        ERRORS
73     *        generic   Running   tcp://192.168.1.73:2376           v17.06.0-ce   
80     -        generic   Running   tcp://192.168.1.80:2376           v17.06.0-ce   
test@bogon:~$ docker-machine active 
73
test@bogon:~$ eval $(docker-machine env 80)
test@bogon:~$ docker-machine active 
80
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1.2创建swarn镜像

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test@bogon:~$ docker run swarm create
Unable to find image 'swarm:latest' locally
latest: Pulling from library/swarm
248cc99c8148: Pull complete 
0aeceddbda61: Pull complete 
c90a34ed5817: Pull complete 
Digest: sha256:02040b8e8292aacb6e30be8babd613f1c253a3ec665d2fbc178d1745810fdd29
Status: Downloaded newer image for swarm:latest
Token based discovery is now deprecated and might be removed in the future.
It will be replaced by a default discovery backed by Docker Swarm Mode.
Other mechanisms such as consul and etcd will continue to work as expected.
3e2a3fa482c1994ad5ee684f120e27c4
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#最后一行为CLUSTER_ID一定保留下好,下面增加节点都会用到

 1.3增加主控节点swarm-master
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test@bogon:~$ docker-machine create --driver generic  --generic-ip-address=192.168.1.80   --generic-ssh-key ~/.ssh/id_rsa  --generic-ssh-user=test --swarm --swarm-master --swarm-discovery token://3e2a3fa482c1994ad5ee684f120e27c4 swarm-master
Running pre-create checks...
Creating machine...
(swarm-master) Importing SSH key...
Waiting for machine to be running, this may take a few minutes...
Detecting operating system of created instance...
Waiting for SSH to be available...
Detecting the provisioner...
Provisioning with ubuntu(systemd)...
Installing Docker...
Copying certs to the local machine directory...
Copying certs to the remote machine...
Setting Docker configuration on the remote daemon...
Configuring swarm...
Checking connection to Docker...
Docker is up and running!
To see how to connect your Docker Client to the Docker Engine running on this virtual machine, run: docker-machine env swarm-master
test@bogon:~$ docker-machine ls
NAME           ACTIVE   DRIVER    STATE     URL                       SWARM                   DOCKER        ERRORS
73             -        generic   Running   tcp://192.168.1.73:2376                           v17.06.0-ce   
80             *        generic   Running   tcp://192.168.1.80:2376                           v17.06.0-ce   
swarm-master   *        generic   Running   tcp://192.168.1.80:2376   swarm-master (master)   v17.06.0-ce 
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1.4 增加swarm节点

#普通节点没有--swarm-master选项

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test@bogon:~$ docker-machine create --driver generic  --generic-ip-address=192.168.1.73   --generic-ssh-key ~/.ssh/id_rsa  --generic-ssh-user=test --swarm --swarm-discovery token://3e2a3fa482c1994ad5ee684f120e27c4 swarm-node1
Running pre-create checks...
Creating machine...
(swarm-node1) Importing SSH key...
Waiting for machine to be running, this may take a few minutes...
Detecting operating system of created instance...
Waiting for SSH to be available...
Detecting the provisioner...
Provisioning with ubuntu(systemd)...
Installing Docker...
Copying certs to the local machine directory...
Copying certs to the remote machine...
Setting Docker configuration on the remote daemon...
Configuring swarm...
Checking connection to Docker...
Docker is up and running!
To see how to connect your Docker Client to the Docker Engine running on this virtual machine, run: docker-machine env swarm-node1
test@bogon:~$ docker-machine ls
NAME           ACTIVE   DRIVER    STATE     URL                       SWARM                   DOCKER        ERRORS
swarm-master   *        generic   Running   tcp://192.168.1.80:2376   swarm-master (master)   v17.06.0-ce   
swarm-node1    -        generic   Running   tcp://192.168.1.73:2376   swarm-master            v17.06.0-ce   
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1.5 查看swarm状态

test@bogon:~$ docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS
0jmswkqce9cqjvri9awdm37ty     swarm-node1         Ready               Active              
69nkaqu3ivfmty5isz0ug0oiw *   swarm-master        Ready               Active              Leader

2管理swarm

2.1退出集群

test@bogon:~$ docker swarm  leave --force
Node left the swarm.

#使用docker-machine切换环境分别在swarm-node1,swarn-master退出集群,以下仅涉及到切换环境不提供代码参见1.1

2.2 swarm-master建立集群

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test@bogon:~$ docker swarm  init
Swarm initialized: current node (69nkaqu3ivfmty5isz0ug0oiw) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-1qj2mfe14jw2tzhg1fxpqiyhxpnm4bqhrhae0dtpp6ip9og4s3-btyj7t5304eyeuhrl4dw1vx1l 192.168.1.80:2377

To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.
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#同样token很重要,不要丢失,docker代码提示很明白,加入集群命令摆在那里

2.3 swarm-node1 加入集群

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test@bogon:~$ docker swarm join --token SWMTKN-1-1qj2mfe14jw2tzhg1fxpqiyhxpnm4bqhrhae0dtpp6ip9og4s3-btyj7t5304eyeuhrl4dw1vx1l 192.168.1.80:2377
This node joined a swarm as a worker.
test@bogon:~$ eval $(docker-machine env swarm-master)
test@bogon:~$ docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS
0jmswkqce9cqjvri9awdm37ty     swarm-node1         Ready               Active              
69nkaqu3ivfmty5isz0ug0oiw *   swarm-master        Ready               Active              Leader
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 3 删除节点

3.1管理节点删除

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test@swarm-master:~$ docker node ls
ID                          HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS
0jmswkqce9cqjvri9awdm37ty     swarm-node1         Ready               Active              
69nkaqu3ivfmty5isz0ug0oiw *   swarm-master        Ready               Active              Leader
#删除管理节点需要增加 --force
test@swarm-master:~$ docker swarm leave --force Node left the swarm.
#删除完毕已经查不到swarm信息了 test@swarm-master:~$ 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.
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3.2 删除普通节点

test@swarm-node1:~$ docker swarm leave --force
Node left the swarm.

 

 

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