Dockerで、1つのHostに2つのcontanierを立てて接続する #Docker

This is how we setup docker
dockerのセットアップは、こちらを見て下さい

This is in Vagrant

bash

sudo docker pull centos

bash

sudo docker pull mysql

bash

sudo docker run -d --name dbserver -e MYSQL_ROOT_PASSWORD='Password1_' mysql

bash

sudo docker run -it --name appserver --link dbserver:db centos /bin/bash

You can check ENV in container.
DB is alias name which you named above command "dbserver:db"

bash

set | grep DB

DB_ENV_GOSU_VERSION=1.7
DB_ENV_MYSQL_MAJOR=5.7
DB_ENV_MYSQL_ROOT_PASSWORD=Password1_
DB_ENV_MYSQL_VERSION=5.7.19-1debian8
DB_NAME=/appserver/db
DB_PORT=tcp://172.17.0.2:3306
DB_PORT_3306_TCP=tcp://172.17.0.2:3306
DB_PORT_3306_TCP_ADDR=172.17.0.2
DB_PORT_3306_TCP_PORT=3306
DB_PORT_3306_TCP_PROTO=tcp

install mysql client

bash

yum install -y mysql

You can login

bash

mysql -uroot -pPassword1_ -h $DB_PORT_3306_TCP_ADDR