It is easy to run podman with the docker-compose. The docker composer can be effectively used to orchestrate containers.

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Let us take a look at Podman Docker Compose and running in detail.

Podman

It is a daemonless container engine. It allows the users to develop, manage, and run OCI Containers on their Linux system. Further, it is a tool for finding, running, building, sharing, and deploying applications. It uses Open Containers Initiative (OCI) Containers and Container Images.

Docker compose

Docker Compose is a tool for defining and sharing multi-container applications. With Compose, users can define the services in a YAML file. And the developers use it to orchestrate containers locally or in production.

Requirements for podman docker-compose

To run Docker Compose with Podman, the user must have the podman: Container management software or tool,docker-compose: Container orchestration tool, and finally podman-docker: it installs the docker script, which emulates the docker CLI. It also links Docker CLI man pages and podman. A user can use dnf, to install the mentioned packages:

sudo dnf install -y podman podman-docker docker-compose

Configuring Podman Socket

To make Docker Compose work, configure the Podman socket as follows:

sudo systemctl enable podman.socket
sudo systemctl start podman.socket
sudo systemctl status podman.socket

This creates a Unix socket in which Docker Compose can communicate and symlinks it to /var/run/docker.sock. The user can test the socket communication by running the curl command given below.

sudo curl -H "Content-Type: application/json" --unix-socket /var/run/docker.sock http://localhost/_ping

If the output of the preceding command is OK, the user setup was successful for the docker-compose podman.

Manage Running Containers

To get a list of containers created by Podman Compose, run the following command:

podman ps

The output shows a container named plex that is currently running. Compose.yml defines the name. marko@test-main: /plex-tests podman ps
CONTAINER ID IMAGE CREATED STATUS NAMES 92f8243e6df3docker.io/linuxserver/plex:latest 10 minutes ago Up 7 seconds ago plex marko@test-main: /plex-tests

Stop Containers

The podman stop command is the standard method for stopping containers in Podman:

podman stop [container-id]

marko@test-main: /plex-test$ podman stop92f8243e6df3 92f8243e6df3
marko@test-main:-/plex-tests

However, there are times when the number of compose containers is too large to manually stop. The following command terminates all containers associated with the Podman Compose deployment:

podman-compose down

The output indicates that Compose has stopped and removed the deployed containers. The pod in which those containers were housed is also removed.

marko@test-main: /plex-test$ podman-compose down podman-compose version: 1.0.4
['podman', '--version', '']
using podman version: 3.2.1
** excluding: set()
podman stop -t 10 plex
plex
exit code: 0
podman rm plex 714556d2ed9076cb735113fc6b68ee15c62747bd40571ed50f6ff0b4f0e1ee13 exit code: 0
podman pod rm pod_plex-test 1f514f261051944df2d78083ce25a2698920444040918bddf15910470915389C exit code: 0
marko@test-main:-/plex-tests

Stopping and removing Pods

A user can also stop and remove pods created by Podman Compose manually. Firstly, to stop a pod, they must enter the following:

podman pod stop [pod-name-or-id]

And after that, the output confirms the deletion of the pod by displaying the entire pod ID.

marko@test-main: /plex-test$ podman pod stop ob1a2db93ba3 ob1a2db93ba3a6b125d180ab279f283ba60a18db9db2a46f20ed8bb19b5aodba marko@test-main:-/plex-tests

As a result, the Plex server terminates and returns to the command prompt.

[plex] | [cont-finish.d] executing container finish scripts... [plex] | [cont-finish.d] done.
[plex] | [s6-finish] waiting for services.
[plex] | [s6-finish] sending all processes the TERM signal. [plex] | [s6-finish] sending all processes the KILL signal and exiting.
exit code: 0 marko@test-main:-/plex-tests

Finally, the following podman podcommand can be used to remove the stopped pods:

podman pod rm [pod-name-or-id]

marko@test-main: /plex-test$ podman pod rm Ob1a2db93ba3 ob1a2db93ba3a6b125d180ab279f283ba60a18db9db2a46f20ed8bb19b5aodba marko@test-main: /plex-test$I

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Conclusion

It is easy to manage and run Podman with Docker Compose. The Docker Compose is a software application for creating and sharing multi-container applications. And, users can use Podman to create, manage, and run OCI Containers on their Linux system.