Last week I had a disaster which took me a few unnerving days to repair. My main Internet-facing server is a bare-metal installation with CentOS 7. It hosts four dozen web sites (or web applications) based on WordPress, Dolibarr, OwnCloud, GEPI, ..
Author : Niki Kovacs
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Ive recently done some extensive testing with the CentOS2ol.sh migration script provided by Oracle: https://github.com/oracle/CentOS2ol The script works perfectly on both CentOS 7.x and 8.x, so I wrote a little blog article about it: https://blog.microlinux.fr/migration-CentOS-oracle-linux-cas-pratiq..
I have CentOS 7 running on a public server hosting all sorts of web applications, mail, XMPP, MPD, etc. How do I reset SELinux configuration to defaults? I know how to reset all my custom booleans to the initial state. # cat /etc/selinux/targeted/active/booleans.lo..
My workstation is currently equipped with a pair of Western Digital Red 1 TB SATA disks in a software RAID 1 setup. Some stuff like working with virtual machines is a bit slow, so Im thinking about replacing the disks by SSD. Im hesitating between th..
Since 2006 I had a streaming audio server based on Icecast and MPD running on CentOS. It works like a little webradio, e.g. listeners connect to a live stream with VLC, Audacious or any other client capable of this. I wonder if theres some software t..
Heres an interesting read which makes a point for CentOS Stream: https://freedomben.medium.com/CentOS-is-not-dead-please-stop-saying-it-is-at-least-until-you-read-this-4b26b5c44877 tl;dr: Communication about Stream was BAD, but Stream itself might..
Im currently writing a little documentation on how to install CentOS 7 on manually partitioned disks, e. g. boot in Rescue Mode first, partition using fdisk or gdisk, reboot, start the installer and use the installer to format these partitions. I h..
Im regularly using software RAID for my CentOS storage servers, either with RAID 1 or RAID 6 depending on the number of disks. Heres two questions about mdadm Ive always been wondering about. 1. Im not sure about the –metadata option. Lets say I w..
Heres a question to the fine-tuning gurus. Yesterday while installing a fresh CentOS server, I wondered how big of a deal the physical position of the swap partition on the disk is. Heres an example of a simple MBR partitioning scheme on a legacy B..
Ive always been a bit puzzled by the fact that Anaconda provides no option to manually create a partition table and specify if its MBR or GPT. From what I can tell – at least under CentOS 7.x – Anaconda will default to MBR, even if I specify a BIOS B..
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