Kenno's Open Note

Podman Quadlet Volume Ownership

This is a short note that serves as a self-reminder on how podman can automatically change the ownership of a source volume to match the default UID and GID within the container. TL;DR: Use the :U suffix on the volume definition. The following is an example of the issue I had and how to apply the fix. First, let’s list the current ownership of the directory to be used as the source volume for the container. ...

How I Resized My Linux Boot Partition

I recently ran into a classic problem on my long-running Fedora installation: my /boot partition was full. Back when I set up the system (around Fedora 20), 400MiB was more than enough. Now, with modern kernels, it can barely hold two versions, let alone the default three that Fedora manages. This meant I couldn’t run system updates. The challenge was that my disk was partitioned with /dev/sda1 for /boot and /dev/sda2 as a single large LVM physical volume for my /root and /home filesystems. This setup prevents a simple resize of /dev/sda1. ...

Find what package provides a file with pacman

While running an Ansible playbook on one of my servers from an Arch device, I encountered the following error: TASK [Gathering Facts] ***************************************************************************************************************************************************** [ERROR]: Task failed: Failed to connect to the host via ssh: ssh_askpass: exec(/usr/lib/ssh/ssh-askpass): No such file or directory Host key verification failed. It looks like the /usr/lib/ssh/ssh-askpass file doesn’t exit. To find out what package the missing file comes from, we can use pacman -F or pacman --files. ...

Set number of ReplicaSets to keep for k8s Deployment

By default, the Deployment in Kubernetes retains 10 ReplicaSets [1]. This number can be configured by setting the .spec.revisionHistoryLimit to a desired number. The following is an example on how to retain just 3 old ReplicaSets in my ‘’n8n’’ Deployment. ➜ k get replicasets -n n8n NAME DESIRED CURRENT READY AGE n8n-57c89d6b7d 0 0 0 91d n8n-5f9fb9c459 0 0 0 80d n8n-666b9476f 0 0 0 80d n8n-66cd6bd8c6 1 1 1 74d n8n-6888cc89bd 0 0 0 91d n8n-7466c456f8 0 0 0 91d n8n-74dfd6cb8c 0 0 0 80d n8n-f8f8f6d7b 0 0 0 237d Let set .spec.revisionHistoryLimit to 3: ...

Communicate from a rootless container to the host

Occasionally, I need to communicate from a podman container to its host, and I keep forgetting how to that. I know I can always google it, but from what had happened earlier today, having a short note to remind myself how this can be easily done is much preferable in my opinion. To communicate between the container and its host, we can just simply use host.containers.internal or host.docker.internal to refer to the host. ...