How to enable epel repository on RHEL/CentOS 6.x versions ?
In this post, we will see how to enable EPEL repository on RHEL/CentOS 6.x versions. We will take an example of 6.8 version, similarly you can change your version and...
Tag: rhel
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Solved: bind_ldap_simple: lookup(ldap): Unable to bind to the LDAP server: (default), error Can’t contact LDAP server.
In this article, we will see an interesting issue where the ldap is not able to get one of the automount map. However ldap is working with authentication, and able...
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Why we are not able to change open files to unlimited in Linux ?
In this post, we will see an interesting thing when we are not able to change the open files to unlimited in Linux. I. Error Message [root@ngelinux001 ~]# ulimit -n...
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How to change swappiness on a linux server ?
Swappiness is a feature in linux which tells the system kernel how much data to be swapped, or to be moved into swap memory and back to main memory. The...
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Installing dnsperf tool on RHEL or CentOS 7.
Today in this post, we will see how to install dnsperf on RHEL or CentOS 7. The easy and quick way is to do via snapd. Lets see the steps...
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See how to set ulimits quickly on Linux server for whole system and for individual user.
In this post, we will see how to set ulimits globally on the system and in case we want to set it user-wise. Lets see it step by step. ...
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Solved: Warning: Qt Warning: QStandardPaths: XDG_RUNTIME_DIR points to non-existing path ‘/run/user/44564’, please create it with 0700 permissions.
Lets look at one of the error message below and its solution. Here we get an error of non-existing path with XDG_RUNTIME_DIR warning message. I. Error Warning: Qt Warning: QStandardPaths:...
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Solved: cron jobs stopped working automatically ?
Today we will see an interesting bug when the cron jobs stopped working on the system automatically. It is identified when we have multiple job schedulers available on the system....
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Steps to patch Linux/RHEL server.
Today we will look linux server patching process in short. It is quite simple, however very useful to know the steps. Linux Production Server Patching Steps Pre-requisite:- I am assuming...