Monday, 19 July 2021

How to Integrate CentOS 7 with Windows AD - Realmd



Realmd widely used to discover and joining objects into windows domain controller. CentOS7 machines can be integrated with AD (Active Directory) for centralized authentications and users/groups level access can be managed through centralized AD controller.

How To Configure DNS (BIND) Server on CentOS 7



DNS (Domain Name System)/BIND (Berkeley Internet Name Domain) is most widely used DNS Server. DNS is a client server protocol that provides Domain name resolution to its associate IP address and IP address to Domain name. Its available in CentOS7 base repository.

Sunday, 11 July 2021

How to install Java 11 on CentOS 8



Java 11  package is available in CentOS 8 base repositories to download and install. The java runtime environment package and its dependencies can be installed using dnf CentOS8 package management tool.

How to resolve “-bash: nmap: command not found” on CentOS 8



By default, nmap command is not available in CentOS8 minimal installation and other Linux distributions. The nmap command line utility is used for port scanning and services which are running on local or remote machine in a network. 

How to install Java9/jdk1.9 on CentOS 8 – RPM File



Java 9/jdk1.9 packages are not available in CentOS8 base repositories to download and install. The version file can be downloaded and installed from official site.

Saturday, 10 July 2021

How to install Java9/jdk1.9 on CentOS 7 – RPM File



Java 9/jdk1.9 packages are not available in CentOS 7 base repositories to download and install. The version file can be downloaded and installed from official site.

Friday, 9 July 2021

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



By default, nmap command is not available in CentOS 7 minimal installation and other Linux distributions. The nmap command line utility is used for port scanning and services which are running on local or remote machine in a network.

Sunday, 9 May 2021

How to Reduce lvm partition in CentOS 7



Sometimes when we are facing issue with high space utilization of the disk in Linux system, then we can make some space by reducing the lvm partition which have unused space available if hard disk partitioned in lvm. Reducing the lvm volume cannot be done online, the volume should be unmounted while reducing. Reducing the logical volume is the risk of data lose and it is always recommended to make a backup of data before reducing the volume.