DevOps Classroomnotes 26/Nov/2022

Docker Swarm Contd..

• We have initialize the swarm cluster and created two services
  • nginx docker service create --replicas 2 --publish mode=host,target=80,published=8080 nginx
  • jenkins docker service create --replicas 2 --publish mode=host,target=8080,published=8081 jenkins/jenkins
• To access them we have used 8080 port of any node in cluster
  
• To access jenkins we have used 8081 port of any node in cluster
  

Docker-Compose

• Docker compose lets run multiple containers in a Docker and also lets define the necessary volumes and networks
• Hello-world docker compose. Create a file called as docker-compose.yaml

services:
  app:
    image: httpd
    ports:
      - "8080:80"
  db:
    image: mysql

• now execute docker-compose up -d
  
  

Exercise:

• Try running the flask application and database in a same bridge network Refer Here