Docker_Commands.txt

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Basic commands
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docker info
docker version
docker system df
docker
docker --help


------------
containers
------------

docker container run --publish 80:80 nginx
docker container run --publish 80:80 --detach nginx
docker container run --publish 80:80 - d nginx
docker container attach nginx (reattach the container to terminal/std_output)
docker ps -> Lists all running containers only
docker ps -a -> Lists all containers(running & exited) with unique random names. 
docker run centos:7 -> runs centos
docker rmi <image_name> -> Removes an image
docker container run --publish 80:80 --name webhost nginx -> creates a container with name as
webhost
docker run -p HOST_PORT:CONTAINER_PORT -e ENV_VAR=VALUE IMAGE 
docker run -d -p 3306:3306 --name db -e MYSQL_RANDOM_ROOT_PASSWORD=yes mysql
docker container stop <unique container id> -> stops container
docker start < unique container id> -> start a stopped container
docker container kill <unique container id> -> force kill a non-responding container
docker container logs <container name> -> displays logs in static mode
docker container logs -f <container name> -> displays logs in follow/live mode
docker container rm <container 1> <container 2>…. -> remove docker containers; doesn’t remove running containers
docker container rm -f <container 1> -> Force remove running containers
docker container rm -f $(docker ps -a -q) -> Removes all containers; -q is quiet mode that displays only numeric IDs of containers

docker commit <container-id> <new-image-name> -> save changes made to a containee to a image

docker top <container> -> Lists specific processes in a specific container
docker container inspect <container> -> gives the config and meta data used to start this container; returns JSON array
docker container stats <container> -> gives live info on CPU, Mem usage, I/O of the container

-----------------
docker networks
-----------------
docker network ls
docker network inspect bridge
docker network create --driver bridge my_net
docker container run -d --name new_nginx --network my_app_net nginx


-----------
dockerfile
-----------

docker build  -t flaskapp .
docker run -d --name flask -p 80:5000 flaskapp
ocker build -t test -f DockerfileTest .

----------------
docker-swarm
----------------
docker service create \
  --name=viz \
  --publish=8080:8080/tcp \
  --constraint=node.role==manager \
  --mount=type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock \
  dockersamples/visualizer

docker swarm init --advertise-addr MANAGER_IP
docker swarm join-token manager
docker node ls
docker service create --replicas 5 -p 80:80 --name <service_name> <image_name>
docker service create --replicas 5 -p 80:80 --name web nginx

docker service ls
docker service ps <service-name>
docker node ps
docker node ps <node-name>
docker node inspect self or master1 or worker1

docker service scale <service_name>=8
docker service rm <service_name>
docker service update --force <service_name>
docker service update --image nginx:1.14.0 –replicas 15 <service_name>
docker service update --image <new_image> --update-parallelism 2 --update-delay 10s <service_name>
docker service update --rollback <service_name>

docker node update --availability drain Manager-1
docker node update --availability active Manager-1

docker swarm leave


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overlay networks
-----------------
docker network create -d overlay my_overlay
docker service create --name psql --network my_overlay -e POSTGRES_PASSWORD=pass postgres
docker service create --name drupal --network my_overlay -p 80:80 drupal


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docker stack deploy
--------------------
docker stack deploy -c <docker-compose.yml>  <stack-name>
docker stack ls
docker stack ps <stack-name>
docker service ls
docker stack rm <stack-name>