How to find WWN Name of a QLogic Card on CentOS 7

CentOS 7 community provides a utility systool to work with hardware adapters. The utility comes with sysfsutils package and this package by default not installed on  CentOS 7 systems. 

How to resolve “-bash: systool: command not found” on CentOS 7

CentOS 7 community provides a utility systool to work with hardware adapters. The utility comes with sysfsutils package and this package by default not installed on  CentOS 7 systems.

How to Maintain Specific Number of Kernel Packages on CentOS 7

Sometime due to less space on /boot partition need remove old kernel packages once new/updated kernel installed. The “installonly_limit” option in /etc/yum.conf is used to maintain the number of kernel available. By default the limit is set to 3 kernels in CentOS 7. 

How to Install GlusterFS on CentOS 7

GlusterFS packages are not included in the default CentOS 7 repository so the packages can be installed from Gluster repository and EPEL repository. GlusterFS packages needs to install on all the GlusterFS Nodes.

How to Resolve YUM Repo Mirror URLs List Issue on CentOS 8

Sometime mirror URLs does not work on CentOS 8 systems and gives the below error. To solve the yum repo issue need to replace it with base URLs.

How to Install Grafana Beta Monitoring tool on CentOS 7

Grafana is a power full software for real time system data monitoring also generate graph and dashboard for easy understanding. It is available in community and enterprise editions. Beta release can also installed via its separate repository. 

How to Install Grafana 9 Monitoring tool on CentOS 7

Grafana is a power full software for real time system data monitoring also generate graph and dashboard for easy understanding. It is available in community and enterprise editions.

How to Install Spacewalk Server on CentOS 7

Spacewalk tool is a free and open source Linux operating system management tool for system provisioning and configuration/management/updating tool of its clients. It is a community version of Red Hat Satellite Server and widely used on Red Had derived distributions.