Uninstall CentOS kernel

After converting from CentOS to AlmaLinux, uninstall CentOS kernels which would otherwise prevent dnf from installing newer Alma kernel due to higher version of CentOS kernel.

Huawei USB 4G + Creta

Huawei USB 4G modem E3372h-608 firmware 10.0.5.1 works out-of-the-box as a tethering connection with GL.iNet Creta AR750 firmware 4.3.17 running OpenWrt 22.03.4 r20123-38ccc47687.

Failing task

If a scheduled task has been failing for a while and no one bats an eye, just disable it.

SSSD cache

If sssd unable to starts after upgrade/downgrade, clear its cache by deleting all files in the “/var/lib/sss/db/“ folder. Encountered this issue when upgrading/switching AlmaLinux 8 and CentOS Stream 9 to AlmaLinux 9.