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 we say bye to 2021 we will say goodbye to our CentOS 8 as well. From 2004 to till now CentOS was used by many …
Bye Bye CentOS 8 with 2021 !!! Thanks for Everything . Best Alternative ? Read More »
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 solve the issue. Environment Red Hat Enterprise Linux Server 6 (with the High Availability and Resilient Storage Add Ons) Red Hat Enterprise Linux Server 7 …
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 boot, So before rebooting the system check this file is in place or not. If you accidentally rebooted and the system is unable …
Grub2 files are missing from /boot. How to recover ? Read More »
Environment Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 CentOS 7 CentOS 8 Issue Would like to disable the (Energy Efficient Ethernet) EEE feature of the NIC. Resolution To disable EEE use the ethtool command. In the example below, EEE is disabled on eth0: # ethtool –set-eee eth0 eee off To make …
How to disable EEE feature on the nic on RHEL7-8/Centos7-8 Read More »
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 forgot their MySQL password. This article will help you recover your password without any data corruption. Environment Red Hat Enterprise Linux including: Red Hat …
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 file /etc/security/limits.d/20-nproc.conf specifies the default nproc limits as,: * soft nproc 1024 root soft nproc unlimited Even when logged in as root, the ulimit shows a different value: $ …
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 in case of third party applications. So in this article, we are talking about how to use x11 forwarding. This is an awesome tool for …
How To Enable X11 Forwarding in RHEL 8 / Centos 8 Read More »
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 : . vi is the symbolic link of vim and this default editor comes with Linux based OS. This is very popular among sysadmins. This a very …
How to Use vi Editor in Linux and vi Editor Cheat-Sheet with 38 Shortcut Read More »
How to Create Network Bridge in RHEL 8 / Centos 8 Network Bridge is a link layer device based on mac address that foreword traffic between networks. In Linux, software bridge uses to emulate a hardware bridge that can be used in the virtual applications with one or more virtual application virtual nic. For example, …
How to Create Network Bridge in RHEL 8 /Centos 8 Read More »
