Podman : Install2021/03/22

	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 the official image

[root@dlp ~]#

podman pull centos:stream8

Resolved "centos" as an alias (/etc/containers/registries.conf.d/000-shortnames.conf)
Trying to pull quay.io/centos/centos:stream8...
Getting image source signatures
.....
.....
Writing manifest to image destination
Storing signatures
2f3766df23b6b238987b29a0cec50a9974f97948ea2e6569035d374289ca2da2

# run echo inside a container

[root@dlp ~]#

podman run centos:stream8 /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:stream8 /bin/bash

[root@187f65ef0018 /]#

# connected

[root@187f65ef0018 /]#

uname -a

Linux 187f65ef0018 4.18.0-277.el8.x86_64 #1 SMP Wed Feb 3 20:35:19 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
[root@187f65ef0018 /]#

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:stream8 /bin/bash

98d7e1e63e3f5ff5a5ccad34ec565bb05d5a1d87ebd795df699a32d0fe2dfb60

# show podman processes

[root@dlp ~]#

podman ps

CONTAINER ID  IMAGE                              COMMAND    CREATED         STATUS             PORTS   NAMES
98d7e1e63e3f  registry.centos.org/centos:stream8 /bin/bash  10 seconds ago  Up 11 seconds ago          jovial_mendel

# attach to container session

[root@dlp ~]#

podman exec -it 98d7e1e63e3f /bin/bash

[root@98d7e1e63e3f /]#

# connected

[root@98d7e1e63e3f /]#

exit

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

[root@dlp ~]#

podman stop 98d7e1e63e3f

[root@dlp ~]#

podman ps

CONTAINER ID  IMAGE   COMMAND  CREATED  STATUS  PORTS   NAMES

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