Questions tagged [container]
404 questions
0votes
0answers
15views
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 ...
5votes
1answer
97views
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
2votes
1answer
50views
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
2votes
0answers
24views
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 ...
0votes
0answers
18views
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&...
0votes
0answers
24views
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
1vote
1answer
28views
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
0votes
0answers
57views
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 (...
0votes
1answer
26views
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, ...
0votes
0answers
18views
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 ...
0votes
2answers
56views
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 ...
- 101
1vote
0answers
72views
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
1vote
1answer
258views
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 ...
- 145
0votes
0answers
24views
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
0votes
0answers
26views
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 ...
