selectattr in Ansible selectattr is a filter plugin in Ansible that allows you to select a subset of elements from a list of dictionaries based on the value of a particular attribute. Its syntax is as follows: <list of dictionaries>…
This article is part of the following series. Get MAC address with Ansible You can use the ansible_default_ipv4.macaddress variable to get the MAC address using Ansible.This is a variable that contains the MAC address of default network interface. Here…
This article is part of the following series. Get all the disks with ansible_facts in Ansible You can use the ansible_facts module in Ansible to gather information about disks on remote hosts. The ansible_facts module automatically collects facts about…
When statement in Ansible In Ansible, the “when” keyword is used to specify a condition or a set of conditions that must be met in order for a task to be executed. It allows you to add conditional logic to…
This article is part of the following series. Get IP address using fact variable with Ansible If you want to get the IP address of a host using Ansible, you can use the ansible_default_ipv4 variable, which is a built-in…
In Ansible, you can use the stat module to get the size of a file on a remote host. The stat module retrieves information about a file, including its size, permissions, and other attributes. Get file size with stat module…
In Ansible, a dictionary (also known as a hash, map, or associative array) is a data type that allows you to store and manipulate key-value pairs. Dictionaries are commonly used to represent configuration data, variables, and other structured information in…
If you’re a PostgreSQL user or developer, you may often need to monitor the size of your database to manage storage resources efficiently. One crucial aspect of this monitoring is checking the disk size of your database. In this post,…
In this post, we will delve into the concept of PostgreSQL server uptime, why it matters, and how to accurately measure it using SQL queries and built-in functions. By understanding how to obtain the uptime of a PostgreSQL server, you…
As a popular and powerful open-source relational database management system, PostgreSQL is widely used in many applications. In this post, we will explore different methods to retrieve the PostgreSQL version information. We will cover SQL queries that can be executed…
