Rsyslog writing to Elasticsearch could lead to an error for some of the records and missing to save them in the backend: Unfortunately, such writes…
collectd nginx plugin: curl_easy_perform failed because of selinux
Enabling the Nginx plugin for collectd under CentOS (or any other system using SELinux) might be confusing for a newbie. Most sources on the Internet…
aptly remove a package from a repository using the cli
Here is a fast tip – how to remove a package from our local aptly repository: Remove the package from the local repository. Create a…
Kibana server is not ready yet – and Waiting for that migration to complete in the logs
Now, living in the cloud and big data there is a time when the admin may need to save all their logs in a central…
Cron missing path – executing docker/podman – adding network: failed to locate iptables
If you have ever happened to execute some complex scripts using the cron system you were inevitable to discover the Linux environment was different than…
lvm2: remove unknown physical volume device in a logical volume with a caching using vgreduce
Following the article SSD cache device to a hard disk drive using LVM the initial setup is: Single slow 2T harddisk. So no redundancy. If…
Inactive array – mdadm: Cannot get array info for /dev/md126
Replacing a disk maybe sometimes challenging, especially with software RAID. If the software RAID1 went inactive this article might be for you! Booting from a…
Mirror a PPA repositories using aptly – PHP (ppa:ondrej/php)
This is a simple example of how to mirror a PPA repository to a local server. The Ubuntu PPA to mirror is ppa:ondrej/php, which offers…
Overwrite Return-Path with postfix because of “550-Sender verification is required but failed”
Sending emails from web applications like PHP may result in rejecting the emails from some servers. Fighting spam emails results in too strict filters and…
Supermicro H11DSU-iN and dual AMD EPYC 7282 with Linux installed – system (GCC flags),kernel and device information
Here is what you can expect if you have new Linux kernel 5.5.11 installed on with AMD EPYC 7282. 8x SATA Controllers – SATA controller:…