Linux

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Ansible Vault

Ansible vault is a tool that helps to encrypt, decrypt and manage sensitive data such as passwords, playbooks, files, etc. If a playbook is encrypted, ansible-navigator will prompt for the password if ones tries to…


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Ansible – Variables – Adding variables in host file

In the below example variables are defined in the host inventory file. [root@centos9vm ~]# cat inventory === === === 192.168.132.129 192.168.132.130 servera.example.com [webservers] servera.example.com serverb.example.com [dbservers] serverc.example.com serverb.example.com servera.example.com [myGroups:children] webservers dbservers [testGRP] 192.168.132.130 [testGRP:vars]…




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Ansible – Inventory file

A simple Ansible  inventory file is a txt file that has a list of managed hosts and groups. A simple Inventory can be as follows: [root@centos9vm ~]# cat inventory == ===== 192.168.132.129 servera.example.com [webservers] servera.example.com…


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Install Ansible Navigator in CentOS 9

The ansible-navigator is a command-line tool which is used for creating, reviewing, running and troubleshooting Ansible content, including playbooks, collections, inventories, documentation and container images. It comes with RHEL distributions and can be installed using…


linux

Linux – sudo file

The sudo command allows you to run programs with the security privileges of another user. Usually this command is used to run command as a  superuser. The configuration files are : /etc/sudoers /etc/sudoers.d/* Instead of…


redhat

Redhat – Generating SoS report

The SoS report command is a tool that collects various details from a Redhat Linux server. These details include configuration details, system information and diagnostic information such as the running kernel version, loaded modules, and…


redhat

Redhat – Configuring network interfaces – nmcli

NetworkManager Command Line Interface – The nmcli is a command-line utility which is used for controlling NetworkManager and reporting network status. View status of physical network device attached to a system [root@centos9vm ~]# nmcli device…