Secret IT Engineer

Install Docker using:

sudo apt-get install docker docker-engine docker.io containerd runc

 
 

Initialise a swarm using:

sudo docker swarm init

 
 

Access a container shell/fs:

sudo docker exec -it <containername> sh

 
 

docker build -t friendlyhello .
# Create image using this directory’s Dockerfile
docker run -p 4000:80 friendlyhello # Run “friendlyhello” mapping port 4000 to 80
docker run -d -p 4000:80 friendlyhello # Same thing, but in detached mode
docker container ls
# List all running containers
docker container ls -a
# List all containers, even those not running
docker container stop <hash> # Gracefully stop the specified container
docker container kill <hash> # Force shutdown of the specified container
docker container rm <hash> # Remove specified container from this machine
docker container rm $(docker container ls -a -q)
# Remove all containers
docker image ls -a
# List all images on this machine
docker image rm <image id> # Remove specified image from this machine
docker image rm $(docker image ls -a -q)
# Remove all images from this machine
docker login # Log in this CLI session using your Docker credentials
docker tag <image> username/repository:tag # Tag <image> for upload to registry
docker push username/repository:tag # Upload tagged image to registry
docker run username/repository:tag # Run image from a registry

 
 

docker stack ls
# List stacks or apps
docker stack deploy -c <composefile> <appname> # Run the specified Compose file
docker service ls
# List running services associated with an app
docker service ps <service> # List tasks associated with an app
docker inspect <task or container> # Inspect task or container
docker container ls -q
# List container IDs
docker stack rm <appname> # Tear down an application
docker swarm leave –force
# Take down a single node swarm from the manager

 
 

docker-machine create –driver virtualbox myvm1 # Create a VM (Mac, Win7, Linux)
docker-machine create -d hyperv –hyperv-virtual-switch “myswitch” myvm1 # Win10
docker-machine env myvm1 # View basic information about your node
docker-machine ssh myvm1 “docker node ls”
# List the nodes in your swarm
docker-machine ssh myvm1 “docker node inspect <node ID>”
# Inspect a node
docker-machine ssh myvm1 “docker swarm join-token -q worker”
# View join token
docker-machine ssh myvm1 # Open an SSH session with the VM; type “exit” to end
docker node ls
# View nodes in swarm (while logged on to manager)
docker-machine ssh myvm2 “docker swarm leave”
# Make the worker leave the swarm
docker-machine ssh myvm1 “docker swarm leave -f” # Make master leave, kill swarm
docker-machine ls # list VMs, asterisk shows which VM this shell is talking to
docker-machine start myvm1 # Start a VM that is currently not running
docker-machine env myvm1 # show environment variables and command for myvm1
eval $(docker-machine env myvm1)
# Mac command to connect shell to myvm1
& “C:\Program Files\Docker\Docker\Resources\bin\docker-machine.exe” env myvm1 | Invoke-Expression # Windows command to connect shell to myvm1
docker stack deploy -c <file> <app> # Deploy an app; command shell must be set to talk to manager (myvm1), uses local Compose file
docker-machine scp docker-compose.yml myvm1:~ # Copy file to node’s home dir (only required if you use ssh to connect to manager and deploy the app)
docker-machine ssh myvm1 “docker stack deploy -c <file> <app>”
# Deploy an app using ssh (you must have first copied the Compose file to myvm1)
eval $(docker-machine env -u)
# Disconnect shell from VMs, use native docker
docker-machine stop $(docker-machine ls -q)
# Stop all running VMs
docker-machine rm $(docker-machine ls -q) # Delete all VMs and their disk images

 
 

 
 

#Add user to docker SUDO Group (if you are getting permission errors after install)

 
 

sudo groupadd docker

sudo usermod -aG docker $USER

 
 

Logout or reboot