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Questions tagged [podman]

Podman is a daemon-less container engine for developing, managing, and running OCI Containers on your Linux System. Containers can either be run as root or in rootless mode.

Library and tool for running OCI-based containers in Pods

Libpod provides a library for applications looking to use the Container Pod concept, popularized by Kubernetes. Libpod also contains the Pod Manager tool (Podman). Podman manages pods, containers, container images, and container volumes.

Overview and scope

At a high level, the scope of libpod and Podman is the following:

  • Support multiple image formats including the OCI and Docker image formats.
  • Support for multiple means to download images including trust & image verification.
  • Container image management (managing image layers, overlay filesystems, etc).
  • Full management of container lifecycle
  • Support for pods to manage groups of containers together
  • Resource isolation of containers and pods.
  • Support for a Docker-compatible CLI interface through Podman.
  • Integration with CRI-O to share containers and backend code.
194 questions
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There is any "Podman Compose"?

I recently found out about Podman (https://podman.io). Having a way to use Linux fork processes instead of a Daemon and not having to run using root just got my attention. But I'm very used to orchestrate the containers running on my machine (in…
otaviofcs
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How to run podman from inside a container?

I want to run podman as a container to run CI/CD pipelines. However, I keep getting this error from the podman container: $ podman info ERRO[0000] 'overlay' is not supported over overlayfs Error: could not get runtime: 'overlay' is not supported…
Fabio Gomez
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Why Does Podman Report "Not enough IDs available in namespace" with different UIDs?

Facts: Rootless podman works perfectly for uid 1480 Rootless podman fails for uid 2088 CentOS 7 Kernel 3.10.0-1062.1.2.el7.x86_64 podman version 1.4.4 Almost the entire environment has been removed between the two The filesystem for /tmp is xfs The…
Rob Paisley
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Podman: ERRO[0000] The storage 'driver' option must be set in /etc/containers/storage.conf

I'm on Manjaro, trying Podman and getting this error when I use any podman command: ERRO[0000] The storage 'driver' option must be set in /etc/containers/storage.conf, guarantee proper operation. How can I solve that? Tks.
Dav3rs
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What are good workflows for deploying podman/buildah created container images to minikube?

I am exploring and learning about containers and kubernetes using podman and minikube on a linux workstation. I use podman to build images on the workstation and would like to deploy these images in minikube also running on the workstation using the…
Brad Smith
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Building / Installing podman as non-root

From what I've read it seems to be the answer to everything that ails docker. Images in user directory, containers with only user permissions, no daemon, etc. Yet every guide to installing seems to rely on the system's package manager, and the…
SourceSimian
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Running Podman in docker container without privileged

I would like to know how can i run Podman inside a docker container without using --privileged parameter ? I am not using rootless, meaning i'm running with root user for now. Works with privileged $ docker run --rm -it --privileged podman:test…
jlim
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Accessing host from inside container

What I am trying to accomplish is to connect to a database installed on the host system. Now there is a similar question already for docker, but I could not get that to work with Podman, I imagine because networking works a bit differently here. My…
Thomas Glaser
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Run privileged podman without sudo (and without usernamespace)

I installed podman on RHEL 7.6 and can run normal docker command with sudo sudo podman run hello-world Is there a way to run it without sudo, without using usernamespace (similar to adding your user to the docker group when using regular docker…
Tri Nguyen
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Docker service exits on deploy-over-SSH from Jenkins but manually succeeds

I have a strange issue. I have configured a SSH_USER on Jenkins and trying to deploy a simple docker-service with "deploy-over-SSH". Every time I deploy it Exits as below, and logs just says "Terminated" $ docker ps -a CONTAINER ID IMAGE …
Krishna
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spotify dockerfile-maven-plugin with podman

Is it possible to get this plugin working with podman instead of docker? I want to be able to build, tag and push images from maven.
Jonatan
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How do I change the cgroup version for podman

I am trying to run podman with cgroups v2 enabled. I found a couple of blogposts explaining how to change the runtime to crun and the cgroup_manager to cgroupfs. But I don't know how to actually set the cgroup version to v2. I am running podman on…
Josef Moser
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Run container as non-root so that the container "root" doesn't map to the running user

Question: How can I use podman to run a container as a non-root such that the root user inside the container is not mapped to the host user running the container? Details In podman, when running a container as non-root, the container root uid (0) is…
LeoRochael
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How do I get a podman/buildah container to run under CentOS on GCE?

1. Summarize the problem I am following this simple tutorial from Developers RedHat to get a simple node/express container working. I cannot get a container to run under a CentOS 7 VM on GCE. I have a CentOS 7 GCE virtual machine, where I have…
user10664542
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Podman build command unable to pull image

I have configured Subuid and Subgid after installing Podman in RHEL7 I have created a simple Dockerfile to print hello world and was trying to build the image. My Dockerfile FROM alpine CMD ["echo", "Hello World"] To test I am running below…
user804401
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