Podman : Install

 Install Podman that is Container management tool.

It's possible to use the same ease of use of Docker Cli and also Podman does not need specific Service Daemon.

[1]. Install Podman.

[root@dlp ~]# dnf -y install podman

[2]. Download an official image and create a Container and output the words [Welcome to the Podman World] inside the Container.

# download official image

[root@dlp ~]# podman pull centos

Trying to pull docker.io/centos:latest...Getting image source signatures

Copying blob 729ec3a6ada3: 68.21 MiB / 68.21 MiB  4s

Copying config 0f3e07c0138f: 2.13 KiB / 2.13 KiB  0s

Writing manifest to image destination

Storing signatures

0f3e07c0138fbe05abcb7a9cc7d63d9bd4c980c3f61fea5efa32e7c4217ef4da


# run echo inside Container

[root@dlp ~]# podman run centos /bin/echo "Welcome to the Podman World"

Welcome to the Podman World

[3]. Connect to the interactive session of a Container with [i] and [t] option like follows. If [exit] from the Container session, the process of a Container finishes.

[root@dlp ~]# podman run -it centos /bin/bash

[root@1062d638cd7a /]#     # connected

[root@1062d638cd7a /]# uname -a

Linux 1062d638cd7a 4.18.0-80.7.1.el8_0.x86_64 #1 SMP Sat Aug 3 15:14:00 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[root@1062d638cd7a /]# exit

exit

[root@dlp ~]#     # come back

[4]. If you'd like to run a Container as a Daemon, add [d] option.

[root@dlp ~]# podman run -itd centos /bin/bash

81d101111d73e4b35dbd6b9a30aa75be8b9a43895430d569f9625ca6764289e5


# show podman proceses

[root@dlp ~]# podman ps

CONTAINER ID  IMAGE                            COMMAND    CREATED        STATUS            PORTS  NAMES

81d101111d73  docker.io/library/centos:latest  /bin/bash  3 seconds ago  Up 3 seconds ago         suspicious_lalande


# attach to container session

[root@dlp ~]# podman exec -it 81d101111d73 /bin/bash

[root@81d101111d73 /]#     # connected

[root@81d101111d73 /]# exit

# stop container process (if force stop, specify [kill])

[root@dlp ~]# podman stop 81d101111d73

[root@dlp ~]# podman ps

CONTAINER ID  IMAGE  COMMAND  CREATED  STATUS  PORTS  NAMES

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