docker1.12.0 Swarm cluster

Test environment:

M Anager :

192.168.209.129 Docker_node1

Node:

192.168.209.130 Docker_node2

Systems and Software:CentOS 7.2 Docker 1.12.0

1. Initializing the swarm cluster

[[email protected] ~]# Docker swarm Init

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You can also use parameters:

--listen-addr Specify Listener ( format : <ip|interface>[:p ort]) ( default : 0.0.0.0:2377)

--ADVERTISE-ADDR Specify notification network card ( format : <ip|interface>[:p ort])

The post-execution return information includes two commands , namely joining node and joining the manager

2. Add docker_node2 to the cluster, according to the prompt command

[email protected] ~]# docker swarm join--token \

Swmtkn-1-1toyv27479tfrruwqj14l7dc6gsju4w4u8957wikn59kjlqqdu-dj71uypb64ckw0wylvq7svmzw\

192.168.209.129:2377

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Receive this node joined a swarm as a worker after execution is complete.

[email protected] ~]# Docker swarm--help

Commands:init Initialize a swarm join join a swarm as a node and/or manager Join-token Manage join Toke NS Update update The Swarm leave leave a swarm

3. View cluster status information

Manager:

[[email protected] ~]# Docker info

Swarm:active Nodeid:awsh1ay3dvghh9kuuoipbnanj is manager:true clusterid:eelrml6monrirrlp1qzou45nb managers:1 nodes:2 Orchestration:task history Retention limit:5 raft:snapshot interval:10000 Heartbeat tick:1 election tick:3 Disp Atcher:heartbeat period:5 seconds CA configuration:expiry duration:3 months Node address:192.168.209.129

Node:

[[email protected] ~]# Docker info

Swarm:active Nodeid:6tm7yidwzw69c8byp5rtoeqel is Manager:false Node address:192.168.209.130

View node information

[email protected] ~]# docker node ls

ID HOSTNAME STATUS availability MANAGER Status6tm7yidwzw69c8byp5rtoeqel Docker-node2 Ready Active Awsh1ay3dvghh9kuuoipbnanj * Docker-node1 ready Active Leader

can also be used Inspect View more information

[email protected] ~]# Docker node inspect 6tm7yidwzw69c8byp5rtoeqel

[email protected] ~]# Docker node--help

Commands:demote demote a node from manager in the Swarm inspect Display detailed information on one or more No Des LS List nodes in the swarm promote promote a node to a manager in the Swarm RM Remove a node From the Swarm PS List tasks running on a node update update a node

Docker Service

1. Create nginx service

[[email protected] ~]# Docker service Create--name Web--publish 80:80--replicas 2 nginx

6x1ymmvsugcxtib6sjyjat4yd

Note:

Docker Service create creates the service command--name name--publish Specifies the number of service ports--replicas running container the Nginx image name

2. View the created service

[[email protected] ~]# Docker service ls

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View the running state, where you see a container running in docker-node1,docker-node2 , respectively

[[email protected] ~]# Docker service PS Web

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3. Online expansion, the number of Web containers changed to 5

[email protected] ~]# Docker Service scale web=5

Web scaled to 5

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4. Online reduction

[email protected] ~]# Docker Service scale web=3

Web scaled to 3

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[[email protected] ~]# Docker service--help

Commands:create Create a new service inspect Display detailed information on one or more services PS List the tasks of a service LS List services RM Remove A service scale scale one or multiple s ervices Update Update a service

Reference:https://docs.docker.com/engine/swarm/

This article is from the "Network Favorites" blog, so be sure to keep this source http://liyaoyi.blog.51cto.com/442933/1837188

docker1.12.0 Swarm cluster