Questions tagged [container]
404 questions
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Unexpected network namespace inode when accessing /var/run/netns/ from pod in host network namespace
I'm running a Kubernetes cluster with RKE2 v1.30.5+rke2r1 on Linux nixos 6.6.56 amd64, using Cilium CNI.
Here's the setup:
I have two pods (yaml manifests at the bottom):
Pod A (xfrm-pod) is running ...
- 1
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90
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How do systemd-nspawn and systemd-networkd implement NAT?
I'm trying to understand how systemd-nspawn manages internet access and port-forwarding for containers.
I set up an nspawn container with --network-veth and a port forwarding with --port=80. Both host ...
- 155
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49
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How does one run cron jobs in one container that does stuff in another?
I am on Kubernetes. I need to be able to write and run cron jobs in a pod. I can't use the CronJob workload. The solution I found is to run cron jobs from a cron sidecar container. I write cron jobs ...
- 41
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Custom PAM module and Oauth2 tokens
I have rootless Podman container (system: Alpine Linux) in Podman (master system: Alpine Linux). Container is able to work with xRDP (and sesman) so I am able to connect to it via local user (if ...
- 121
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Degraded status in Crostini container after Developer config and SSH config
systemctl status shows a Degraded state after following Chromeos Development Docs associated with and tweaking the ssh and sshd_config. I've got info about my Build&Machine specs and setup sharing&...
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How to modify a mount namespace without having a working mount command in it?
I have a process which is running in a container I want to debug. To debug it, I want to modify that mount namespace (most importantly: I want to mount my toolkit root into it).
How to do that from a ...
- 10.3k
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27
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Performance Degradation with rsync in container or cgroupv2 with MEM limit
I'm experiencing a significant performance degradation when using "rsync" to copy files over the network from within a container or cgroup with memory limits on Oracle Linux 9.2. The issue ...
- 961
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How to unmount a drive while a container is running?
I have a Linux (6.6.x) machine with hotswap chassis that allows drives to be inserted and removed without downtime.
The system has the following drives:
/dev/sda (operating system)
/dev/sdb (...
- 53
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26
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Upgraded k8 worker node from ubuntu 20.04 to 22.04. DNS resolution/networking inside pods doesn’t work & pods keep crashing/restarting
I have a k8 cluster based on Ubuntu 20.04
1 master and 3 worker nodes.
I drained one of the worker node. Put kubectl,iptables, kubeadm, kubelet & containerd packages on hold.
OS upgrade to 22.04, ...
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I keep getting the error CONTAINER_CREATE_FAILED_SIGNAL
this has been happening ever since I've been trying to install kicad. I don't know why it is doing this but it just wont start.
here is the full error:
I'm not sure what else to do. so can someone ...
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55
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Forward port 2222 to docker but not forward 22
My setup is Linux host with SSH and SFTP access.
It runs inside a docker container exposing also SSH and SFTP.
The docker container does not have a separate network. Uses “host” network setting.
I ...
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70
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podman containers running under a snap package aren't visible by host's podman
I'm running Visual Studio Code on Ubuntu, installed as a Snap package. If I open the terminal in Visual Studio Code and use it to run a podman container - everything works fine, except that if I run ...
- 13.2k
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251
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How to install CIFS on RedHat UBI9-minimal?
Trying to mount a Windows share from a UBI9-minimal container. I've discovered that cifs is not contained in the image. Trying to install 'cifs-utils' via microdnf seems to indicate it does not ...
- 135
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Weird output of mount/findmnt command from inside a chroot jail
On my Linux system I entered a chroot jail using chroot(1) and then mounted a procfs instance on /proc from there.
Now if I do cat /etc/mtab from inside the chroot jail, it shows the full list of ...
- 165
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Why is runc a separate program from the container runtime?
As runc is a necessary dependency in order to interface with the container runtime, why is it developed separately instead of being integrated to the container runtime project?
For example, containerd ...
