May 2022 - Podman - Podman List Archives

shouldn't the current directory be the default context for "podman build"?
by Robert P. J. Day 12 Dec '24

12 Dec '24

"man podman-build" suggests that the context argument is optional: SYNOPSIS podman build [options] [context] podman image build [options] [context] ... If no context directory is specified, then Podman will assume the current working directory as the build context, which should contain the Containerfile. but if i have a directory with nothing but a Containerfile, i get: $ podman build Error: no context directory specified, and no containerfile specified $ OTOH, specifying context of current directory: $ podman build . STEP 1: FROM alpine:latest ... etc etc ... thoughts? rday

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mqueue msg_max in rootless container
by Michael Ivanov 27 Nov '23

27 Nov '23

Hallo! I'm trying to run my application in podman rootless container and I stumble on following problem: my program needs /proc/sys/fs/mqueue/msg_max to be at least 256, but in running container this value is just 10. When I try to specify this parameter while running the image (--sysctl 'fs.mqueue.msg_max=256') I get the following error: Error: open /proc/sys/fs/mqueue/msg_max: Permission denied: OCI permission denied and container is not created. My host where container is being run has this parameter set to 256. How can I expose current host setting for msg_max to my container? Best regards, -- \ / | | (OvO) | Михаил Иванов | (^^^) | | \^/ | E-mail: ivans(a)isle.spb.ru | ^ ^ | |

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podman container storage backup
by Michael Ivanov 20 Oct '22

20 Oct '22

Greetings, I make periodic backups of my laptop where I use some podman containers. To perform a backup I just invoke rsync to copy my /home/xxxx/.local/share/containers directory to nfs mounted filesystem. Containers are running, but quiescent, no real activity occurs. Is this a correct way to back up or is there anything special about container directory to be taken into account? As far as I understand some hash-named subdirectories are shared between different containers and images using special kind of mounts, can this lead to duplicate copies r inconsistencies? Underlying fs is btrfs. Thanks, -- \ / | | (OvO) | Михаил Иванов | (^^^) | | \^/ | E-mail: ivans(a)isle.spb.ru | ^ ^ | |

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cgroups not configured for container
by ugiwgh＠qq.com 23 Jun '22

23 Jun '22

There is somthing warning, when I add "--pid=host". How can I get this warning gone? OS: 8.3.2011 Podman: 2.2.1 [rsync@rsyncdk2 ~]$ podman run --rm --pid=host fb7ad16314ee sleep 3 WARN[0000] cannot toggle freezer: cgroups not configured for container WARN[0000] lstat : no such file or directory

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Error: writing blob: storing blob to file "/var/tmp/storage781575554/5": happened during read: unexpected EOF
by ugiwgh＠qq.com 30 May '22

30 May '22

I have two nodes execute "podman pull xxx" at the same time. I have set graphroot = "/tmp/$UID/share/containers/storage". But the two nodes share the $HOME. podman version is 4.0.2. OS version is CentOS Linux release 7.9.2009. Any help will be appreciated. -GHui

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GitHub Actions using podman?
by Craig Rodrigues 27 May '22

27 May '22

Hi, For Docker, there are a number of GitHub Actions with good documentation that can be used to build containers, and push them to registries using docker build/buildx. I've started using these Actions: https://github.com/docker/setup-buildx-action/ https://github.com/docker/docker-login-action/ https://github.com/docker/build-push-action https://github.com/docker/metadata-action docs: https://docs.github.com/en/actions/publishing-packages/publishing-docker-im… These docs and actions are actually quite good when setting up automation in GitHub for building/pushing containers. Are there equivalent GitHub Actions for using podman? I still think that podman/buildah are overall better tools for building containers than Docker. -- Craig

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podman libpod error
by Michael Ivanov 23 May '22

23 May '22

Greetings, Wherever I run some utility, which generates a lot of output to tty inside a container podman exec aborts with a following error: Error: timed out waiting for file /home/user/.local/share/containers/storage/vfs-containers/e369fbde8245633a58c1ce1c96abfcef2b4baecca2a024b1924fe9f91b7efdcf/userdata/72ae2dfe7ce68233b56a360cafd34f3ac5d555f48ca8cf32c0a0aa06dc3b510a/exit/e369fbde8245633a58c1ce1c96abfcef2b4baecca2a024b1924fe9f91b7efdcf: internal libpod error The problem can be recreated with following commands: podman run --name test --replace --detach --entrypoint '[ "/bin/sleep", "365d" ]' alpine podman exec -it test bash while true; do echo \ ======================================================================================================================================; done Is this a known issue? My podman is verion 3.4.7, running rootless under debian sid (bookworm) Best regards, -- \ / | | (OvO) | Михаил Иванов | (^^^) | | \^/ | E-mail: ivans(a)isle.spb.ru | ^ ^ | |

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Podman Community Cabal Meeting Tomorrow - Thurs May 19, 2022, 11:00 a.m. EDT (UTC-5)
by Tom Sweeney 18 May '22

18 May '22

Hi All, The next Podman Community Cabal meeting is happening in a little under 21 hours from now, at 11:00 am EDT(UTC-5). We'll be talking lock contention, vendoring and release hygiene, and API specgen/create options. Conference link in the agenda: https://hackmd.io/gQCfskDuRLm7iOsWgH2yrg?both We'll also have some time for topics from the floor, hope to see you there! t

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How to clone a container?
by Clemens Eisserer 13 May '22

13 May '22

Hi, I have to use some non-well-made containers running a proprietary database product, where the data-directory can not be separated easily from the rest of the container. So modified state is not only stored at some specific paths, which I could re-direct to volumes, but spread over the whole file-system. Is there an easy way to backup such a container as a whole? I already tried to export the container to an image and later on re-import it, however it seems during this process some metadata is lost - when I try to start that re-imported container, podman complains about missing start script/commands. I already found podman clone, however on my system (fedora 35) it doesn't seem to be available. Are there maybe other ways to duplicate/export an existing container and keeping the clone in a working state? Thanks, Clemens

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podman unhappy with usb device absent - ?
by lejeczek 10 May '22

10 May '22

Hi guys I get this, with I think is really weird and I hope somebody could shed more light on it. -> $ podman container restart wordpress.test.bits Error: crun: error stat'ing file `/dev/bus/usb/001/003`: No such file or directory: OCI runtime attempted to invoke a command that was not found There is only one USB I can guess is in play - an USB NIC but it has nothing to do with podman container nor its networks. But I also get this (different host from above): -> $ podman container restart wordpress.test.bits Error: crun: error stat'ing file `/dev/fb0`: No such file or directory: OCI runtime attempted to invoke a command that was not found What is podman/crun doing there & why? v 4.0.3 many thanks, L.

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