rhel 7
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 artic…
rhel 8
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 b…
Troubleshoot
How to disable EEE feature on the nic on RHEL7-8/Centos7-8
Environment Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 CentOS 7 CentOS 8 Issue Would like to disable the (Ene…
rhel 8
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 sys…
ulimit
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 …
rhel 8
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 inst…
ubuntu
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 How to Use vi Editor in Linux and vi Editor Command in Linux …
rhel 8
How to Create Network Bridge in RHEL 8 /Centos 8
How to Create Network Bridge in RHEL 8 / Centos 8 Network Bridge is a link layer device based on mac address that foreword…
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