Bye Bye CentOS 8 with 2021 !!! Thanks for Everything . Best Alternative ?
Bye, Bye CentOS 8 with 2021 !!! Thanks for Everything. Best Alternative? Finally, Today is 31 December 2021 last day of the year and CentOS 8 End of Life. When…
Mysql resource is unable to start after failover due to permission change on ‘/var/lib/mysql’ directory.
If you are working on a cluster, after a sudden failover you face the issue that Mysql is unable to start. In this article, we will show you how to…
Grub2 files are missing from /boot. How to recover ?
Grub2 or Boot Repair Due to some file corruption or mishandling we lost grub. This can cause the system to hang in the boot.When you reboot the system it will not…
How to disable EEE feature on the nic on RHEL7-8/Centos7-8
EnvironmentRed Hat Enterprise Linux 7Red Hat Enterprise Linux 8CentOS 7CentOS 8IssueWould like to disable the (Energy Efficient Ethernet) EEE feature of the NIC.ResolutionTo disable EEE use the ethtool command. In…
How to reset my MySQL database root password?
How to reset my MySQL database root password?This is a very common issue if you are working in a big environment or a system where everything is automated. People always…
How to set ulimit or change the default soft or hard limit for the number of user’s processes?
Environment RHEL/CentOS 5 RHEL/CentOS 6 RHEL/CentOS 7 RHEL/CentOS 8 Issue The default configuration file for ulimit is /etc/security/limits.d/90-nproc.conf for (RHEL5, RHEL6), /etc/security/limits.d/20-nproc.conf for (RHEL7) and for RHEL 8 we have to create…
How To Enable X11 Forwarding in RHEL 8 / Centos 8
How To Enable X11 Forwarding in RHEL 8 / Centos 8 X11 is very important for a sysadmin because some applications only install or run on GUI. This always happen…
How to Use vi Editor in Linux and vi Editor Cheat-Sheet with 38 Shortcut
How to Use vi Editor in Linux and vi Editor Command in Linux How to Use vi Editor in Linux and vi Editor Command in Linux vi Editor : .…
How to Create Network Bridge in RHEL 8 /Centos 8
How to Create Network Bridge in RHEL 8 / Centos 8Network Bridge is a link layer device based on mac address that foreword traffic between networks. In Linux, software bridge…