manage:192.168.5.5
node:192.168.5.3
、 192.168.5.4
Docker Swarm discovery 为 file://path/to/file
cluster文件内容:
192.168.5.3:2375
192.168.5.4:2375
manage(192.168.5.5) command:docker run -d -it -h node-m --name=node-m --restart=always -v $(pwd)/cluster:/tmp/cluster -p 3375:3375 swarm manage -H 0.0.0.0:3375 file:///tmp/cluster
node1(192.168.5.3) command:docker run -d -it -h node-1 --name=node-1 -v $(pwd)/cluster:/tmp/cluster swarm join --addr=192.168.5.3:2375 file:///tmp/cluster
node2(92.168.5.4) command:docker run -d -it -h node-2 --name=node-2 -v $(pwd)/cluster:/tmp/cluster swarm join --addr=192.168.5.4:2375 file:///tmp/cluster
manage(192.168.5.5) command:
[root@manage opt]# docker run --rm -v $(pwd)/cluster:/tmp/cluster swarm list file:///tmp/cluster
192.168.5.3:2375
192.168.5.4:2375
[root@manage opt]# docker -H 0.0.0.0:3375 info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: swarm/1.2.6
Role: primary
Strategy: spread
Filters: health, port, containerslots, dependency, affinity, constraint, whitelist
Nodes: 2
(unknown): 192.168.5.3:2375
└ ID:
└ Status: Pending
└ Containers: 0
└ Reserved CPUs: 0 / 0
└ Reserved Memory: 0 B / 0 B
└ Labels:
└ Error: Cannot connect to the Docker daemon at tcp://192.168.5.3:2375. Is the docker daemon running?
└ UpdatedAt: 2017-04-10T19:03:37Z
└ ServerVersion:
(unknown): 192.168.5.4:2375
└ ID:
└ Status: Pending
└ Containers: 0
└ Reserved CPUs: 0 / 0
└ Reserved Memory: 0 B / 0 B
└ Labels:
└ Error: Cannot connect to the Docker daemon at tcp://192.168.5.4:2375. Is the docker daemon running?
└ UpdatedAt: 2017-04-10T19:03:37Z
└ ServerVersion:
Plugins:
Volume:
Network:
Swarm:
NodeID:
Is Manager: false
Node Address:
Security Options:
Kernel Version: 3.10.0-514.el7.x86_64
Operating System: linux
Architecture: amd64
Number of Docker Hooks: 2
CPUs: 0
Total Memory: 0 B
Name: node-m
Docker Root Dir:
Debug Mode (client): false
Debug Mode (server): false
WARNING: No kernel memory limit support
Registries:
manage、node1、node2 ps -a
命令结果
[root@manage opt]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
18a246b46399 swarm "/swarm manage -H 0.0" 3 minutes ago Up 3 minutes 2375/tcp, 0.0.0.0:3375->3375/tcp node-m
[root@node1 opt]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
df43c2cbfee0 swarm "/swarm join --addr=1" 2 minutes ago Up 2 minutes 2375/tcp node-1
[root@node2 opt]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a9b48c6d7be2 swarm "/swarm join --addr=1" 3 minutes ago Up 3 minutes 2375/tcp node-2
其他信息:
swarm version: 1.2.6
docker version: 1.12.6
为什么会出现这样的问题呢"Cannot connect to the Docker daemon at tcp://192.168.5.x:2375. Is the docker daemon running?"
PHPz2017-04-27 09:05:42
Are you still using the old version?
Use docker 1.12 to build a multi-host docker swarm cluster
Docker 1.12 service automatic discovery