How to replace a security group of an EC2 instance in AWS
Introduction A security group controls the traffic that is allowed to reach and leave the instance. It is a set of IP filter rules that define how to handle […]
Cloud & AWS
1 min read
Cloud & AWS
2 min read
How to enable email notifications for the Nagios alerts
Introduction Nagios is an open-source IT system monitoring tool. It sends alerts when critical infrastructure components fail and recover, providing administrators with notice of important events Prerequisites Implementation
Containers & Kubernetes
1 min read
How to upgrade Gitlab to the latest version
Introduction GitLab is a web-based Git repository that provides free open and private repositories, issue-following capabilities, and wikis. It is a complete DevOps platform that enables professionals to perform
Web & Architecture
1 min read
How to clear the data from a Mongo DB collection
Introduction A collection is a grouping of MongoDB documents. Documents within a collection can have different fields. A collection is the equivalent of a table in a relational database system. A
Containers & Kubernetes
1 min read
How to add repository secrets in GitHub
IntroductionGitHub is an online software development platform. It’s used for storing, tracking, and collaborating on software projects. It makes it easy for developers to share code files and
Security
1 min read
How to set up SSL (Let’s Encrypt) for a Plesk mail server
Introduction SSL is the standard technology for securing an internet connection by encrypting data sent between a website and a browser (or between two servers). It prevents hackers from