Friday 25 February 2022

How to Allow/Deny Access for AD Users/Groups using Realmd on CentOS 8

Once the Linux machine joined with any Active Directory Domain, all the AD users can get SSH login on the machine with regular user privileges to avoid this access can manage using realm command.

Thursday 24 February 2022

How to Resolve Slow SSH Login Before Getting Password Prompt on CentOS 8

Sometime SSH login failures encountered with gssapi-with-mic authentication method and hence takes time to get password prompt.

Wednesday 23 February 2022

How to Allow SUDO Access to a Domain User/Group on CentOS 8

By default, Domain users doesn’t have any type of sudo privilege and even can’t switch as root user. On CentOS 8 sudo access can be granted access based on usernames or groups and same can be done for one/many commands.

Tuesday 8 February 2022

How to Extend Logical Volume on CentOS 8

Sometime encountered with no space left on file system error and demand opened to increase file system space. It would be easy if file system is created under LVM.