As to why Podman-in-Podman works but Podman-in-Docker does not, our default Seccomp policy allows CLONE_NEWUSER while theirs does not. I think it will only fail if the user's current soft limit is set to something different than the hard limit. Did we ever verify what caused this? Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. (leave only one on its own line), 1.Install or get a kubernetes cluster. Might need to run restorecon -R -v /var/lib/containers ; o=rw sets options for the mount and is equivalent to the -o flag. option. Run `sudo podman run --rm -ti fedora:30` - container starts 2. Why does it not work with --ulimit host? We read every piece of feedback, and take your input very seriously. Can you please share the output of `podman info`? You signed in with another tab or window. I got my existing toolbox container working by setting the nproc limit for my user in /etc/security/limits.conf to the value reported for the existing container with podman inspect --format '{{ printf "%+v" .HostConfig.Ulimits }}', @llunved please share your limits.conf cat /proc/sys/kernel/pid_max Or do you mean the limits set by podman? Or the equivalent for your platform? Additional information you deem important (e.g. @mheon the issue can be closed. Sign in Podman fails to pull an image from a local docker-distribution registry (in non-rootless environment). output of rpm -q podman or apt list podman): Additional environment details (AWS, VirtualBox, physical, etc. You signed in with another tab or window. Session is started by systemd and output goes to systemd log. Was this a known/intentional change in 3.2.x? You signed in with another tab or window. @rhatdan to be clear we have to re-create our containers, though. For our use case, I think we can move that setup from image build time to container run time where we're in privileged mode and I think this should work. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Well occasionally send you account related emails. (You can also install strace and run strace esy and see EMFILE errors), You can ^Z to background esy, and then try to run some commands, e.g. Rootful should change to use cgroupfs for --cgroup-manager. issue happens only occasionally): Package info (e.g. 3 root root unconfined_u:object_r:user_tmp_t:s0 60 Feb 13 12:19 . We might want to keep if !rootless.IsRootless() condition, right? How many witnesses testimony constitutes or transcends reasonable doubt? ): can be reproduced locally with docker build running in a centos-8 based docker container (docker-in-docker): The text was updated successfully, but these errors were encountered: My first thought is Seccomp - the Docker container could be blocking some flags of clone that we require. I only have the file /usr/share/containers/containers.conf with this: Everything looks fine, and it works for me, but not for you. To see all available qualifiers, see our documentation. By clicking Sign up for GitHub, you agree to our terms of service and I seem to recall a time when podman version DID work without clone (under docker, as rootless), then suddenly stopped. There seems to be a new requirement for podman 3.2.1 running in containers to have privileges that weren't needed before -- privileges we can't seem to grant to a docker build. Max open files 1024 524288 files. If this works on Docker and --privileged does not solve it this seems like a Podman bug. The result was, that it worked. This artical explains how to install Podman on RHEL8 / CentOS 8: Install and Use Podman on CentOS 8 / RHEL 8 | ComputingForGeeks. Void podman seems broken :D. I believe for v2.0.X this will be fixed with: #6786. I know this is about podman, the root cause is the same, More links Additional environment details (AWS, VirtualBox, physical, etc. However I don't know if I'm on the right path here, is any of the binary from podman/conmon/runc supposed to have CAP_SYS_RESOURCE ? 589). 1:46 p.m. New subject: Error processing tar file (exit status 1): lsetxattr /dev/initctl: operation not permitted On Thu, Sep 22, 2022 at 12:50 PM GHui Wu via Podman <podman (a)lists.podman.io> wrote: . I don't think so. Am I mistaken that this is a podman 3.2.1 change/regression/defect? Does air in the atmosphere get friction due to the planet's rotation. What's it called when multiple concepts are combined into a single problem? Learn more about Stack Overflow the company, and our products. Running a pod as rootless user with systemd: "setting rlimit type 7: operation not permitted", podman-2.0.0 won't work with apparmor enabled. * that was creating ulimit requests in the container config, when they were not asked for. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You can use host to copy the current configuration from the host. Describe the results you received: Everything in /proc/self of rootless user is owned by root and labeled as system_u:system_r:kernel_t:s0 . To see all available qualifiers, see our documentation. Why is a normal user allowed to give away a file/folder by running I believe that runtime stderr indicates that this is an error message from the OCI runtime, not that we're having issues working with that file descriptor (though I may be wrong, I've never seen this error before). https://medium.com/@Mark.io/simple-rootless-containers-with-runc-on-centos-redhat-f9230f74b88b Turned out that the entrypoint script was missing execution bit. Unfortunately, regardless how image and container has been created I get OCI permission denied. I'd think of the distro or systemd to change the default value. To see all available qualifiers, see our documentation. Run the Docker daemon as a non-root user (Rootless mode) If running podman in docker/kubernetes isn't a supported configuration, we've got some rethinking to do. correct? I don't have podman installed on my laptop and the problem I am trying to solve is building docker/podman images inside the jenkins agents that are launched as kubernetes pods, when jenkins master itself is running as a pod. podman - Mapping of user Id's - Stack Overflow Is it installation glitch? You signed in with another tab or window. --ulimit host takes the same ulimits that are in place for the podman process. The other container is created with --ulimit host. Based on the setrlimit call above it's trying to set the soft/hard nproc limit to 4194304 however my hard limit was set to 524288. CRun itself can be invoked by a rootless user with --help option, its permissions and labelling look OK. to your account, Is this a BUG REPORT or FEATURE REQUEST? @rhatdan I believe this was your code, PTAL. I'm wondering if we can't adjust limits at all, or if we can adjust but rootless is not attempting to do so (I know that root Podman will automatically adjust to the higher possible). Just did CRun upgrade to 1.4.2 spec 1.0.0 - the same result. Then on a ubuntu20 laptop, i just create a container using above mentioned podman image as baseimage ; So I get a ubuntu20 based container with podman installed as per docs, So I can run podman info with flags as seen above, And in this container I try to create a image that needs to do pip install, As you can see, podman info works but podman build fails, Now I try to build a image that does not do, There is also a systemd error I don't understand, But at least the image got built and the only difference was that I removed the. OK, sounds like this was a choice -- makes me sad because it runs counter to the main "What is Podman" value prop: https://podman.io/whatis.html#what-is-podman-simply-put-alias-dockerpodman. But I could easily be mistaken. I encountered the culprit here was podman 4.0.2. Also replacement CRun with Runc changes nothing. If the SELinux labeling is suspected, please, explain why I see different executable files attributes of CRun, RunC (root system_u:object_r:container_runtime_exec_t:s0) and Conmon (oot system_u:object_r:bin_t:s0) and different owners from root and rootless ( root / nobody ). The echo "tty" > /dev/tty works OK and "tty" is displayed on gnome-terminal. I had rootless Podman set and working until I installed the podman 3.1.0, in 2021-03-31. Additional information you deem important (e.g. The --opt sets driver-specific options, which mostly map to an equivalent flag in mount(8).. type=nfs sets the type of the filesystem to be mounted and is equivalent to the -t flag. Image's CMD is bash and its owner is root as expected. Does this image work within Docker? I want to try to get it to happen locally but have not had time. We support a common Jenkins CICD pipeline used across numerous teams to build hundreds of projects, most of which are not interested in making the switch to podman. Well occasionally send you account related emails. Logs: is there a way to set the --ulimit option globally? The text was updated successfully, but these errors were encountered: Can you upgrade to 3.0 final and see if the issue still occurs? (leave only one on its own line), Start a basic container like fedora podman run -it centos sh, Check the file system limits cat /proc/self/limits | grep open, The value I see is only 1024, and that's the reason why a good number of container that I use fails or on boot or on build all with the "same" error: Open files limit reached, I think by default it should have a larger limit, or a way to globally configure the default limit. These days I can't try it with v2.0 on the machine where I have this issue; I will try it in a few days. By clicking Sign up for GitHub, you agree to our terms of service and https://github.com/containers/common/blob/master/pkg/config/containers.conf, https://github.com/containers/common/blob/master/docs/containers.conf.5.md, building from source failed (using Podman, not sure it's related), User Podman Services (podman.service/podman.socket) fail within 24 hrs. But once podman has deployed containers, I have 1048576. In Centos 8 there are two different ways: (leave only one on its own line). Since most of recent Linux distros, including WSL use GNOME the problem looks as very common. @longwuyuan I meant adding capabilities to the Kubernetes container Podman is running in, not to Podman itself - sorry if I was unclear. Sign in Could you create 1024 open FDs for ROOT inside the container, and another 1024 for UID 1 inside the container? But the first one should fail, and then we should set the second. Same issue here with brand new containers (never created before) Hi GHui, As I mentioned in other threads to you. linux - ping does not work on a rootless Ubuntu podman container on I started exploring podman, so I can build images without privileged containers, Is there a document/link you can point me at that shows how to use podman in a unprivileged docker container (taking care of seccomp etc), If this is not supported, I am sorry for troubling you all but request advise/confirmation if it is even possible to use podman in a unprivilged docker container, Well don't use podman, use Buildah. .. We read every piece of feedback, and take your input very seriously. could there be a setuid helper that increases the RLIMIT_NOFILE limit, drops privileges and capabilities and then runs fuse-overlayfs? I believe for v2.0.X this will be fixed with: #6786. Unfortunately logs don't contain who is sender of -1. and which OCI permission is required. Fedora 29 Silverblue physical. I don't think you can run docker containers within a docker build? I "podman system reset" plus " rm -rf ~/.local/share/containers/" plus rebooted and still have the issue If I remove --ulimit host from the other container specification and have nofile ulimit set via containers.conf it works. I believe this is only effecting people with /etc/security/limits.conf being set for their rootless users. [root@bteir airwide]# su - ins Last login: Wed Aug 12 22:31:40 CDT 2020 on pts/0 /etc/profile[278]: ulimit: 1048576: limit exceeded [Operation not permitted] ins ins> This log is kept on writing . Is it clear what I mean? Steps to re. Is it clear what I mean? lsetxattr /dev/initctl: operation not permitted - Podman Additional information you deem important (e.g. thanks if you are interactions over ssh pam limits need to set the pam module for ssh to include the limits file otherwise activity over ssh will not work, Fixing ulimit: open files: cannot modify limit: Operation not permitted, How terrifying is giving a conference talk? Podman on WSL2 - Cushy Code And just to verify - can you do a cat /proc/self/limits as your user, but not in the container, and see that they're higher than the 1024:1024 that rootless Podman is giving you? But the oldest one I made (about 3 weeks ago) had a limit of 63412, which is 1 higher than my system's limit, 63411. Fixing ulimit: open files: cannot modify limit: Operation not permitted Unfortunately the error messages was not clear about it. I'm sure running a rootless container worked with Fedora 31 but I'm not sure if the problem appeared as soon as I migrated to Fedora 32 or if it appeared later since I don't use podman that often. My idea now is to enable cgroupv2 and use crun. Oops docker build does not have --cap-add, but podman build does. Is this a BUG REPORT or FEATURE REQUEST?

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