Time Date and Timesync using Chronyd
Every system has a clock and is a critical component of the Operating System. It keep the time, which is used for various proposes such as: Running automated jobs as configured intervals Marking timestamp on…
June 2024
Protected: PostgreSQL: Installation – Replication and HA
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DNF : Dandified YUM
Dandified YUM or simply DNF is an advanced version of the Yellowdog Updater, Modified OR simply YUM, a package manager for rpm-based Linux distributions. The “yum” commands are still available in Redhat, but they point…
Ansible: Roles and Modules from Content Collections
The Content Collection is a set of related roles, supplementary modules, and other content. This can be obtained from an Ansible Content Collection and can be used in playbook. The default path where collections are usually downloaded…
Ansible: Adding a YUM or DNF repository
A yum or dnf repository can be added to managed nodes using Ansible. This is done using the ansible builtin yum_repository module. Basics of creating yum repositories can be found at this link. Below playbook…
Creating YUM and DNF Repositories
As we all knows the yum and dnf commands are used to download and install software packages from software repositories configured in the node. In a centOS server, centos repositories will be configured by default….
Ansible: Configuration file
When executing a playbook, ansible uses certain values mentioned in the “ansible.cfg” file. This includes the location of “inventory” file, etc. The “ansible.cfg” file can be present in any of the following locations, and the…
Ansible: Install NFS mounts (NFS server installation included)
NFS, or Network File Share is a service that allows client to store and share files and folders that will be stored in a centralized server. Installing NFS server on RHEL 9 node is straight…
Ansible: The changed_when parameter
By default, when a playbook is executed, in the display mode stdout we will see various piece of information. IT provides us a the sections through which the execution is proceeding, displaying the name is…
Ansible: Add and remove crontab files
Ansible can be used to remotely configure cron entries or even create a crontab files in managed nodes. The below example creates a crontab file named “/etc/cron.d/the-date-time” in the managed nodes. First let us verify…