Podmanコマンド・使用例

コンテナの操作コマンドと使用例を紹介する。

Install Podman

dnf -y update
dnf -y install podman podman-docker

Hello World

podman run hello-world

操作

Container

Run

podman volume create myvolume
podman run -it --rm -v myvolume:/media --name myrl docker.io/rockylinux/rockylinux:9 /bin/bash
# -d:detach、離す、background
# -i:interactive
# -t:tty
# --rm:コンテナ終了時にコンテナ自動的に削除
# --name:コンテナの名前
# -v:ボリュームマウント -v < <Volume Name>:<マウント先> >
# --net mynetwork
# --ip=192.168.1.1

# status
docker ps # running
docker ps -a # all
# stop
podman stop <CONTAINER ID| NAME>
# delete
podman rm <CONTAINER ID | NAME>

Export & Import

# export
podman commit <CONTAINER ID> <IMAGE NAME>
podman export <CONTAINER ID> > <OUTPUT NAME>.tar

# import
cat <OUTPUT NAME>.tar | podman import - myalma:latest

Image

# list
podman image list
# delete
podman rmi <IMAGE ID>
# delete all
podman rmi -a

Volume

# create
podman volume create <VOLUME NAME>
# status
podman volume inspect <VOLUME NAME>
# => "Mountpoint": "/var/lib/containers/storage/volumes/myvol/_data"

# export volume
podman volume export <VOLUME NAME> --output <EXPORTE NAME>.tar

# import volume
podman volume create <VOLUME NAME>
podman volume import <VOLUME NAME> <EXPORTE NAME>.tar

## del volume
podman volume prune # unused
podman volume rm --all

Pod

# stop
podman pod stop <POD NAME>
# rm
podman pod rm <POD NAME>

Network

# status
podman network ls
# create network
podman network create my_network_a
podman network create --subnet=192.168.1.0/24 my_network_b
# delete network
podman network rm my_network_a my_network_b

All Delete

podman system prune
podman system reset

Containers in Pod

# POD
podman pod create \
 --name wp-pod \
 -p 80:80

# VOLUME
podman volume create wp-mysql

# CONTAINER
## DB SERVER - START
podman run \
 --detach \
 --name wp-pod-db \
 --pod=wp-pod \
 --restart=always \
 -e MYSQL_ROOT_PASSWORD='mysql-root-password' \
 -e MYSQL_DATABASE='wp' \
 -e MYSQL_USER='wordpress' \
 -e MYSQL_PASSWORD='wordpress-password' \
 -v wp-mysql:/var/lib/mysql \
 docker.io/library/mariadb

## WEB SERVER - START
podman run \
 --detach \
 --name wp-pod-web \
 --pod=wp-pod \
 --restart=always \
 -e WORDPRESS_DB_NAME='wp' \
 -e WORDPRESS_DB_HOST='127.0.0.1' \
 -e WORDPRESS_DB_USER='wordpress' \
 -e WORDPRESS_DB_PASSWORD='wordpress-password' \
 docker.io/library/wordpress:latest
Reference

Environments

[root@localhost ~]# cat /etc/redhat-release 
AlmaLinux release 9.3 (Shamrock Pampas Cat)
[root@localhost ~]#
|