节点管理

列出集群节点信息

root@node-50:~# docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS
tim72sbpcd33765m3kg00oghk     node-40             Ready               Active              Reachable
js01jwztashf7ix2l536f3e25 *   node-50             Ready               Active              Leader
x1jg9nuoiw7olrhkymxd9ivve     node-60             Ready               Active              Reachable

列出指定节点详细信息

默认是类似Json格式返回，--pretty更易于阅读一些

root@node-50:~# docker node inspect node-40 --pretty
ID:            tim72sbpcd33765m3kg00oghk
Hostname:                  node-40
Joined at:                 2018-02-26 03:09:39.732577983 +0000 utc
Status:
 State:            Ready
 Availability:             Active
 Address:        192.168.2.40
Manager Status:
 Address:        192.168.2.40:2377
 Raft Status:        Reachable
 Leader:        No
Platform:
 Operating System:    linux
 Architecture:        x86_64
 ...

提权指定节点

woker -> manager

root@node-50:~# docker node promote node-40

降权指定节点

root@node-50:~# docker node demote node-60
Manager node-60 demoted in the swarm.
root@node-50:~# docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS
tim72sbpcd33765m3kg00oghk     node-40             Ready               Active              Reachable
js01jwztashf7ix2l536f3e25 *   node-50             Ready               Active              Leader
x1jg9nuoiw7olrhkymxd9ivve     node-60             Ready               Active

常用的就这几个，其他的根据--help帮助使用即可~