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…
This article is part of the following series. RPM packages can contain not only the software itself but also its dependencies, which are other software packages required for the software to function properly. Managing RPM package dependencies is crucial…
A connection timeout means that the client attempted to establish a network socket to the SSH server, but the server failed to respond within the timeout period. ssh: connect to host 203.0.113.0 port 22: Connection timed out In PuTTY, you…
This article is part of the following series. If you’re working with an RPM-based Linux distribution, you may need to list the files that are contained within an RPM package. This can be useful for a variety of reasons,…
systemctl is a command-line utility in Linux operating systems that is used to control and manage the system’s services, daemons, and other processes. It is an essential tool for system administrators and developers as it allows them to monitor and…
FIPS stands for Federal Information Processing Standards—a set of standards and guidelines developed by the U.S. federal government to establish uniform requirements for information security, including computer security, data protection, and cryptography. What is FIPS? FIPS publications are used by federal…
Security-Enhanced Linux (SELinux) is a security architecture for Linux systems that allows administrators to have more control over who can access the system. It was originally developed by the United States National Security Agency (NSA) as a series of patches…
