Podman Cheat Sheet

Common usage

$ alias docker=podman

$ podman --version                    # Check version

$ sudo podman login -u USER_NAME REGISTRY_URL
                                    # Login to Registry
$ sudo podman login -u USER_NAME \
  -p ${TOKEN} \
  REGISTRY_URL  
                                    # Login with token or password
                                    # eg: in OpenShift, token can retrive as
                                    # $ TOKEN=$(oc whoami -t)

$ podman logout quay.io             # Remove login credentials for registry.redhat.io
$ podman logout --all               # Remove login credentials for all registries

$ podman search REGISTRY_URL/IMAGE_NAME
                                    # search for an image in registry

$ sudo podman run --name test -u 1234 \
  -p 8080:8080 -d s2i-sample-app

$ sudo podman run -d --name TEST \
  quay.io/USER_NAME/IMAGE_NAME:VERSION
                                    # Create a container 

$ podman run --privileged quay.io/podman/stable podman run ubi8 echo hello
                                    # The easiest way to run Podman inside of a container is to use the --privileged flag.

$ sudo podman ps                    # List running containers
$ sudo podman stop CONTAINER_NAME   # STOP running containers
$ sudo podman rm CONTAINER_NAME     # remove running containers

$ sudo podman rmi IMAGE_NAME        # delete container image
$ sudo podman logs CONTAINER_NAME                    
                                    # check logs of running container

$ sudo podman build -t NAME .       # build container image from Dockerfile and spec
$ sudo podman images                # see available images

Advanced usage

## Rootful Podman in rootful Podman with --privileged
podman run --privileged quay.io/podman/stable podman run ubi8 echo hello

## added volume
podman run --privileged -v ./mycontainers:/var/lib/containers quay.io/podman/stable podman run ubi8 echo hello

## Rootless Podman in rootful Podman with --privileged
podman run --user podman --privileged quay.io/podman/stable podman run ubi8 echo hello

## Rootful Podman in rootful Podman without --privileged
podman run --cap-add=sys_admin,mknod --device=/dev/fuse --security-opt label=disable quay.io/podman/stable podman run ubi8-minimal echo hello

## Run podman inside podman and check podman version
$ podman run --privileged \
  quay.io/podman/stable \
  podman version

## Run podman inside podman and using ubi8 image inside.
$ podman run --privileged \
  quay.io/podman/stable \
  podman run ubi8 echo hello

$ podman run -it --privileged \
  docker.io/mysticrenji/podman \
  podman version

$ podman run -it --privileged \
  docker.io/mysticrenji/podman \
  podman run -d docker.io/library/node:12-alpine

$ podman run -it --privileged \
  docker.io/mysticrenji/podman \
  podman version && git version uptime\
  uptime;\
  git version;\
  git clone https://github.com/mysticrenji/podman-experiments.git;\
  cd podman-experiments;\
  podman-compose up -d;\
  podman-compose down
  podman images

Container commands list

Command	Man Page	Description
attach	podman-container-attach(1)	Attach to a running container
checkpoint	podman-container-checkpoint(1)	Checkpoint a container
cleanup	podman-container-cleanup(1)	Cleanup network and mount points of a container
commit	podman-container-commit(1)	Commit a container into an image
cp	podman-container-cp(1)	Copy files/folder into and out of containers
create	podman-container-create(1)	Create a new container
diff	podman-container-diff(1)	Inspect changes in a containers file system
exec	podman-container-exec(1)	Run a process in a container
exists	podman-container-exists(1)	Check if a container exists
export	podman-container-export(1)	Export container’s filesystem as a tar archive
init	podman-container-init(1)	Init a container
inspect	podman-container-inspect(1)	Display detailed information on a container
kill	podman-container-kill(1)	Send a signal to containers in container
List (ps)	podman-container-list(1)	List all of the containers
logs	podman-container-logs(1)	Fetch logs for a container
mount	podman-container-mount(1)	Mount a container’s root filesystem
pause	podman-container-pause(1)	Pause container
port	podman-container-port(1)	List port mappings for a container
prune	podman-container-prune(1)	Remove all non running containers
rename	podman-container-rename(1)	Rename an existing container
restart	podman-container-restart(1)	Restart a container
restore	podman-container-restore(1)	Restore a checkpointed container
rm	podman-container-rm(1)	Remove a container
run	podman-container-run(1)	Run a command in a new container
runlabel	podman-container-runlabel(1)	Execute the command described by an image label
start	podman-container-start(1)	Start a container
stats	podman-container-stats(1)	Display statistics for a container
stop	podman-container-stop(1)	Stop a container
top	podman-container-top(1)	Display running process in container
unmount	podman-container-unmount(1)	Unmount a container’s root filesystem
unpause	podman-container-unpause(1)	Unpause all the containers in a pod
wait	podman-container-wait(1)	Wait for a container to exit

Pod commands list

Command	Man Page	Description
create	podman-pod-create(1)	Create a new pod
exists	podman-pod-exists(1)	Check if a pod exists
inspect	podman-pod-inspect(1)	Display detailed information on a pod
kill	podman-pod-kill(1)	Send a signal to containers in pod
list	podman-pod-list(1)	List all of the pods
logs	podman-pod-logs(1)	Fetch logs for pod with one or more containers
pause	podman-pod-pause(1)	Pause all the containers in a pod
prune	podman-pod-prune(1)	Remove all stopped pods and their containers
restart	podman-pod-restart(1)	Restart a pod
rm	podman-pod-rm(1)	Remove one or more pods
stats	podman-pod-stats(1)	Display statistics for the containers in a pods
start	podman-pod-start(1)	Start a pod
stop	podman-pod-stop(1)	Stop a pod
top	podman-pod-top(1)	Display running process in the pod
unpause	podman-pod-unpause(1)	Unpause all the containers in a pod

Podman on MacOS

## Intall podman and qemu
brew install podman qemu
podman machine init
podman machine start

Reference

• https://podman.io/
• https://cloudnweb.dev/2019/06/replacing-docker-with-podman-power-of-podman/
• https://www.redhat.com/sysadmin/podman-inside-kubernetes
• Podman in Action - The next generation of container engines (Dan Walsh)
• https://devopscube.com/podman-tutorial-beginners/

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