almalinux
restrict a package to a fixed version
sudo yum install python3-dnf-plugin-versionlock
sudo yum versionlock gcc-*
list all locks
sudo yum versionlock list
clear locks
sudo yum versionlock clear
remove a lock
sudo yum versionlock delete gcc-*
enable ntp sync
install systemd-timesyncd
sudo dnf install systemd-timesyncd
sudo timedatectl set-ntp true
add your ntp server
/etc/systemd/timesyncd.conf[Time]
NTP=time.cloudflare.com
enable and start the service
sudo systemctl enable systemd-timesyncd
sudo systemctl start systemd-timesyncd
to verify if the time sync is enabled
sudo timedatectl timesync-status
to verify if the time is in sync
change hostname
change hostname between restarts
sudo hostnamectl set-hostname [HOST]
change the hostname, before the restart
sudo hostnamectl --transient set-hostname [HOST]
change the hostname on hosts file