After staring a new LXC container, the syslog program (Syslog-ng) began to throw thousands of errors with this kind of message: These messages were logged…
Tag: linux
Degraded ext4 performance with millions files because of high system time in ext4_mb_good_group (100% kworker/u32+flush)
A strange behavior has been monitored in a storage server holding more than 20 millions of files, which is not a really big figure, because…
Send coins in Groestlcoin network from command line with Groestlcoin Core 25 in year 2023
This article an updated version of Send coins in Groestlcoin network with Groestlcoin Core (cli), because it appeared many things handling the wallets with the…
List all rules and IPs when using firewalld under CentOS
CentOS 7, CentOS 8, CentOS Stream 8, CentOS Stream 9 use firewalld service for the firewall of the machine. Firewalld service is easily controlled by…
How to upgrade to CentOS Stream 9 from CentOS Stream 8
This article will show how to update to CentOS Stream 9 from CentOS Stream 8. If only official repositories are used it is fairly easy…
git status and bus error on SSD – fix READ errors by recovering part of the file
SSD and Linux encryption may not be the best idea, especially without the TRIM (allow-discards) option (or never executed fstrim?). Nevertheless, this error may occur…
MPEG-DASH and ClearKey, CENC drm encryption with Nginx, bento4 and dashjs under CentOS 8
The purpose of this article is to demonstrate a simple and plain example of ClearKey DRM encryption using a DASH stream. Usually, the ClearKey is…
Create MacVTap device using NetworkManager nmcli under CentOS 8
In continuation of NetworkManager management with nmcli, here is a quick Linux console tip for users like CentOS 8 (or all distributions, which use the…
Gentoo ERROR: Python module pytevent of version 0.10.2 not found, and bundling disabled
Emerging the sys-libs/ldb-2.3.0-r1 package may fail with an error for a missing Python mode, despite the sys-libs/tevent with a python USE flag is presented in…
Gentoo emerge virtualbox- Mesa / GLU: Mesa not found at, Mesa headers not found
Emerging the package app-emulation/virtualbox the following error occurs: The configure script reports the mesa is missing, but the package media-libs/mesa is installed. Reinstalling does not…