Deploy Docker Swarm cluster multi-master.

by Francisco José Rodríguez Rubio , January 23 , 2017 in docker category.

1 minuto(s) de lectura

Description

In this post I’m going to setup a docker swarm cluster using 3 nodes where all nodes are master.

System Resources

we need 3 centos 7 with the following configuration:

swarm1  -->  172.26.12.1
swarm2  -->  172.26.12.2
swarm3  -->  172.26.12.3

Install docker-ce in all servers

swarmX#> sudo yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine
swarmX#> sudo yum install -y yum-utils device-mapper-persistent-data lvm2
swarmX#> sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
swarmX#> sudo yum install docker-ce

Initialize the cluster in swarm1

swarm1#>   docker swarm init --advertise-addr 172.26.12.1

Show the tokens

worker token

swarm1#>  docker swarm join-token worker

master token

swarm1#>  docker swarm join-token manager

Join nodes using the master token. ( Run in swarm2 and swarm3)

swarm2#> docker swarm join --token SWMTKN-1-4pipgzprgeee73d8h3hwwakp3dx6aes6dsgqs

swarm3#> docker swarm join --token SWMTKN-1-4pipgzprgeee73d8h3hwwakp3dx6aes6dsgqs

check nodes in the cluster

swarm1#> docker node ls

Deploy a service in cluster swarm

swarm1#> docker service create --replicas 3 -p 80:80 --name web1 serviceName nginx

Check the service

swarm1#> docker service ls
swarm1#> docker service ps web1

docker, swarm

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