red hat enterprise HowTo - Linux / Unix Q & A from nixCraft

Stress Test CPU and Memory (VM) On a Linux / Unix With Stress-ng

last updated July 18, 2018 in FreeBSD, Hardware, Linux, OpenBSD, UNIX

I want test my Linux, OpenBSD, FreeBSD and Unix-like server entirely for high load and monitoring the health under stress. How can I stress out my CPU, memory, I/O, and disk stress and more with stress test tool on a Linux or Unix-like systems?

Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)

last updated July 26, 2012 in MySQL

I‘m getting the following error when I run mysql -u root -p

Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)

How do I solve this problem under CentOS / RHEL / Red Hat Enterprise Linux server 5.x or 6.x?

RHEL / Centos Linux Disable Firewall

last updated October 19, 2013 in CentOS, Iptables, RedHat and Friends

How do I disable firewall on CentOS or Red Hat Enterprise Linux server version 5.x/6.x running on my HP micro server?

Upgrading Red Hat Enterprise Linux From Version 6.2 to 6.3

last updated June 22, 2012 in CentOS, RedHat and Friends

Red Hat Enterprise Linux v6.3 has been released and available via RHN for immediate update. How do I upgrade my RHEL from 6.2 to the latest 6.3 version?

CentOS / RHEL CacheFS: Speed Up Network File System (NFS) File Access

last updated May 3, 2017 in CentOS, RedHat and Friends

We are using NFS v4 server under RHEL 6.x+. How do I configure CacheFS for NFS under Red Hat Enterprise Linux or CentOS to speed up file access and reduce load on our NFS server?

CentOS / RHEL: Disable or Enable SELinux Policy Modules

last updated May 6, 2012 in RedHat and Friends

How do I disable or enable SELinux policy modules under Red Hat Enterprise Linux running on Dell hardware?

CentOS / RHEL / Scientific Linux 6/5 Enable and Install EPEL Repo

last updated December 23, 2017 in CentOS, RedHat and Friends

Extra Packages for Enterprise Linux (or EPEL) is a Fedora Special Interest Group that creates, maintains, and manages a high quality set of additional packages for Enterprise Linux, including, but not limited to, Red Hat Enterprise Linux (RHEL),CentOS and Scientific Linux (SL). How do I enable it under CentOS/RHLE 6.x or 5.x server?