How to deploy wordpress through service in swarm cluster

The following tutorial column of WordPress will introduce to you how to deploy wordpress through service in the swarm cluster. I hope it will be helpful to friends in need!

Create an overlay-driven network

docker network create -d overlay wordpress
[vagrant@swarm-manager ~]$ docker network ls
NETWORK ID NAME DRIVER SCOPE
q3rp3i79eud7 wordpress overlay swarm

Create mysql container

docker service create --name mysql --env MYSQL_ROOT_PASSWORD=root --env MYSQL_DATABASE=wordpress --network wordpress --mount type=volume,source=mysql-data,destination=/var/lib/mysql mysql

Create wordpress

docker service create --name wordpress -p 80:80 --env WORDPRESS_DB_PASSWORD=root --env WORDPRESS_DB_HOST=mysql --network wordpress wordpress

View node distribution

# 服务列表
[vagrant@swarm-manager ~]$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
vxz0bfmul9th mysql replicated 1/1 mysql:5.7.22
cpe3wqrsoqxi wordpress replicated 1/1 wordpress:latest *:80->80/tcp

# wordpress服务的节点分布
[vagrant@swarm-manager ~]$ docker service ps wordpress
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
tnh4f0ldyidl wordpress.1 wordpress:latest swarm-manager Running Running 4 minutes ago

# mysql服务的节点分布
[vagrant@swarm-manager ~]$ docker service ps mysql
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
jns8bllzbz94 mysql.1 mysql:5.7.22 swarm-work1 Running Running 33 minutes ago

Although wordpress is only distributed on the node swarm-manager (192.168.205.10), we found that using the following link to access, the effect is the same, isn’t it amazing? . . . For specific reasons, see 7.6

http://192.168.205.10/
http://192.168.205.11/
http://192.168.205.12/

In swarm mode, there is no need to install etcd, swarm will automatically help us maintain the distributed overlay network

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