hasmukhlalpatel / docker

docker compose files

1. Elasticsearch Kibana

Linux requires following settings:

    resolve low virtua lmemory issue.
    $ sudo osysctl -w vm.max_map_count=262144

Urls

Elastic http://localhost:9200/

Kiban http://localhost:5601/

2. WordPress MySql

3. Mongo - Express

Urls

Express http://localhost:8081/

Commands

$ docker exec -it some-mongo bash

$ docker logs some-mongo

$ docker run -it --link some-mongo:mongo --rm mongo mongo --host mongo test

Run docker stack deploy -c stack.yml mongo or docker-compose -f stack.yml up

3. RabbitMQ

4. Orchard CMS - orchardcore-cms

NodeJs App

docker swarm setup commands

Setup Docekr swarm

init

 docker swarm init --advertise-addr {IP addr}

join

 docker swarm join --token SWMTKN{your token}

leave

 docker swarm leave --force

Docker compose Commands

Test the app with Compose

- docker-compose up
- docker-compose up -d

Check that the app is running with docker-compose ps

docker-compose ps

Bring the app down

docker-compose down --volumes

Set up a Docker registry

1. Start the registry as a service on your swarm:

 docker service create --name registry --publish published=5000,target=5000 registry:2

2. Check its status with docker service ls:

 docker service ls

Push the generated image to the registry

docker-compose push

Deploy a service to the swarm

Run the following command:

docker service create --replicas 1 --name helloworld alpine ping docker.com

docker service create \
  --name my-web \
  --publish published=8080,target=80 \
  --replicas 2 \
  nginx

docker service create --name nginx --publish published=80,target=80 nginx

docker service create --name dns-cache -p 53:53 dns-cache 

docker service create --name dns-cache \
  --publish published=53,target=53 \
  --publish published=53,target=53,protocol=udp \
  dns-cache
  
 docker service create --name dns-cache \
  -p 53:53 \
  -p 53:53/udp \
  dns-cache

Inspect

docker service inspect --format="{{json .Endpoint.Spec.Ports}}" helloworld

To see the list of running services:

docker service ls

To change the desired scale of the service running in the swarm::

docker service scale <SERVICE-ID>=<NUMBER-OF-TASKS>

Example

docker service scale helloworld=5

To see the service status

docker service ps <SERVICE-ID>

Example

docker service ps helloworld

Apply rolling updates to a service

docker service create \
  --replicas 3 \
  --name redis \
  --update-delay 10s \
  redis:3.0.6
  
  Or
  
  docker service update --image redis:3.0.7 redis
  
  Or
  
  docker service update redis

Inspect the redis service:

docker service inspect --pretty redis

Drain a node on the swarm

docker node ls

docker node update --availability drain worker1

docker node update --availability active worker1

docker node inspect --pretty worker

Deploy the stack to the swarm

1. Create the stack with docker stack deploy:

  docker stack deploy --compose-file docker-compose.yml stackdemo

2. Check that it’s running with docker stack services stackdemo:

  docker stack services stackdemo

3. Bring the stack down with docker stack rm:

  docker stack rm stackdemo

4. Bring the registry down with docker service rm:

  docker service rm registry

5. if you’re just testing things out on a local machine and want to bring your Docker Engine out of swarm mode, use docker swarm leave:

  docker swarm leave --force