When using the NetworkManager it is possible to create multiple connections with the same name, which may result in confusion how to list them all…
tips
Automatically start zram swap device on boot with systemd zram-generator under CentOS Stream 9
zram-generator package will install necessary tools to automate the creation on boot the compressed RAM devices. This article focuses on compressed swap devices. As of…
Edit with systemctl edit to add restart on fail to a service – nfs-ganesha
A quick tip how to edit a service unit file under a c system like CentOS Stream 9 or Ubuntu. The best way is to…
Change time zone for syslog messages in syslog-ng
When sending syslog packets to a remote server the time-zone of the current server may lead to problems because the syslog-ng program sets the time-zone…
Firewalld and how to preserve the original source IP when forwarding to internal IP
Using firewalld and the forwarding options (IP or port forward) might work not as expected if the default setup is left on the system. Consider…
Switch to a new master (primary) in MySQL InnoDB Cluster 8
Switching to a new master (or new primary if to use the new naming) in a MySQL 8 InnoDB Cluster is simple with the MySQL…
Install CentOS Stream 9 booting VNC installer with kexec
Lately, dedicated servers come with Remote management consoles like IPMI KVM or iLO, or DRAC, but they are still slow to initiate the process of…
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…
Run a docker container with bigger storage
By default, the Docker command-line utility docker runs containers with 10G storage, which in most cases is enough, but if the user wants to just…
Migrate emails from GMail to another IMAP server with imapsync
It appears pretty easy to migrate an existing GMail account to another IMAP server, i.e. not GMail/Google server. There is an excellent synchronization tool –…