Ubuntu
Get Rid of Ubuntu Pro Advertisement When Updating Apt
2 min readIf you’re using Ubuntu and have recently noticed the promotional message for Ubuntu Pro while updating your system with apt, you’re not alone. While Ubuntu Pro is useful for …
How to Fix 'sudo: unable to resolve host' Error in Ubuntu
2 min readLearn how to quickly fix the common ‘sudo: unable to resolve host’ error in Ubuntu by properly configuring your /etc/hosts file. This guide provides a detailed step-by-step …
Installing Custom CA Certificates on Ubuntu 22.04
1 min readInstalling Custom CA Certificates on Ubuntu 22.04 If you are dealing with a server that uses self-signed SSL certificates, you may encounter issues with client utilities like curl, …
Online resize of a root ext4 file system
5 min readThe following is a guide to resizing your root ext4 file system online. After the operation, your partition will have more free space. There will be no shrinkage of the root file …
kernel: rc rc0: receive overflow
2 min readAfter upgrade my build nodes from Ubuntu 20.04 to Ubuntu 22.04, I got a lot of spamming syslog messages on my Intel NUC nodes, model NUC5i5RYB. Both these nodes are running RKE2 …
How to disable systemd-resolved in Ubuntu
1 min readsystemd-resolved can cause issues with Kubernetes (not to mention the time spent troubleshooting various issues).
How to Fix 'rm: cannot remove '/etc/resolv.conf': Operation not permitted'
1 min readIn Ubuntu, you may run into an issue when updating /etc/resolv.conf even tho you have root permissions. Error: rm: cannot remove '/etc/resolv.conf': Operation not permitted
How to Fix 'E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)'
1 min readIn Ubuntu, you may sometimes encounter an error when attempting to run an apt command: E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily …