How to increase DefaultTasksMax in RHEL/CentOS 8 onwards ?
Let us see how to increase the DefaultTasksMax in RHEL, or CentOS 8 Operating system onwards. The default maximum tasks in RHEL/CentOS8 is quite low when you run any database...
Author: Saket Jain
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How to enable NTP in timedatectl in rhel 7 onwards ?
Today we will see how to enable NTP in RHEL 7 onwards. Lets see it step by step. 1. Check current timezone and date [root@ngelinux samba]# date Thu Mar 7...
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How to download only RPM with dependencies using yum ?
In this article, we will see how to download rpm packages with dependencies using yum. The trick is very useful especially for servers where the repo is not reachable. Lets...
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Easy way: To Find difference between two text files in Linux.
To find the differences between two files in Linux using grep, we can use the following approaches. 1. Lines in File1 but not in File2 # grep -Fxv -f file2.txt...
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How to change core dump path to current dir in RHEL 8+ onwards and test it ?
From RHEL 8 onwards, the default core file path is changed to /var/lib/systemd/coredump unlike till RHEL 7 where its saved in current path by default. We can use below steps...
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How to restrict direct root user password login on Linux ?
In this post, we will see how to restrict direct root login via password, and only allow login via keys. To achieve this, we need to change below setting in...
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How to set timezone on RHEL Linux Host from RHEL 7 onwards ?
Lets see how to set timezone on Redhat Linux from RHEL 7 onwards. Earlier we used to link the timezone files. However now we can do it via a command...
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Solved: root is not allowed to run sudo on ngelinux. This incident will be reported.
In this post, we will see one of the common error while using sudo and how to fix that. I. Problem [root@ngelinux bin]# sudo -u mysqld sh /monitor/mysqld/scripts/mysqld_NGEL.sh root is...
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How to reinstall an installed package using YUM/DNF in linux ?
In this post, we will see how to reinstall any installed package in Linux using Yum or dnf. 1. Check out the package and version available to install/reinstall. [ngeroot@ngelinux01 grub2]#...