Lab #12: Restart Command

The docker-compose restart command help us to restart the services.

Pre-requisite:

Tested Infrastructure

Platform	Number of Instance	Reading Time
Play with Docker	1	5 min

Pre-requisite

• Create an account with DockerHub
• Open PWD Platform on your browser
• Click on Add New Instance on the left side of the screen to bring up Alpine OS instance on the right side

Assignment

• Create a docker-compose.yml file
• Create the container and network
• Restart the service
• Restart a single service

Create a docker-compose.yml file

version: '3.7'
services:
  #Nginx Service
   webserver:
     image: nginx:alpine
     container_name: Nginx
     restart: unless-stopped
     ports:
       - "80:80"
       - "443:443"
   dbserver:
     image: mysql:5.7
     container_name: Mysqldb
     restart: unless-stopped
     ports:
       - "3306:3306"
     environment:
       MYSQL_ROOT_PASSWORD: Pa$$w0rd
       MYSQL_USER: test
       MYSQL_PASSWORD: Pa$$w0rd123
       MYSQL_DATABASE: test 
     volumes:
       - db_data:/var/lib/mysql
volumes:
  db_data:

Create the container and network

$ docker-compose up --no-start

Creating network "root_default" with the default driver
Creating Mysqldb ... done
Creating Nginx   ... done

Checking container status

$ docker-compose ps
 Name               Command             State    Ports
------------------------------------------------------
Mysqldb   docker-entrypoint.sh mysqld   Exit 0        
Nginx     nginx -g daemon off;          Exit 0      

Listout the services

$  docker-compose ps --services
webserver
dbserver

Restart the service

$ docker-compose restart
Restarting Mysqldb ... done
Restarting Nginx   ... done

Checking container status

$ docker-compose ps
 Name               Command             State                    Ports                  
----------------------------------------------------------------------------------------
Mysqldb   docker-entrypoint.sh mysqld   Up      0.0.0.0:3306->3306/tcp, 33060/tcp       
Nginx     nginx -g daemon off;          Up      0.0.0.0:443->443/tcp, 0.0.0.0:80->80/tcp                        

Restart a single service

$ docker-compose restart webserver
Restarting Nginx ... done

Set a time wait for stop before killing the container

$ docker-compose restart -t 30 webserver

Specify a shutdown timeout (-t/–timeout) in seconds(default: 10)

Contributor

Savio Mathew

Next » Lab #13: Pause Command