Inside Linux TCP: From Handshake to Reset or Close
TCP is the backbone of network communication in Linux systems. It’s a connection-oriented protocol that ensures reliable data exchange between a sender and a...
Recent posts
RabbitMQ Monitoring: Pushing Queue Metrics to Elasticsearch with Python script
Monitoring RabbitMQ queues is critical for maintaining the health and performance of the RabbitMQ distributed system. This post is about a Python script that...
Scalable CI/CD with Jenkins and Docker Cloud Agents
A Jenkins cloud agent using Docker refers to dynamically provisioning Jenkins build agents (also called slaves or nodes) in Docker containers—typically on de...
Implementing Mutual TLS (mTLS) Authentication with OpenSSL: A Step-by-Step Guide
This article explores mutual Transport Layer Security (mTLS) authentication and how OpenSSL can facilitate its implementation. Also known as client-server au...
Unassigned shards in Elasticsearch 7 and 8
There are multiple reasons why shards might get unassigned, ranging from misconfigured allocation settings to lack of disk space.
Percona XtraDB Multi-Master Replication cluster setup between 3 nodes
This guide describes the steps to establish a Percona XtraDB Cluster v8.0 among three Ubuntu 22.04 nodes.
Site-to-Site VPN between Mikrotik router and Ubuntu 22.04 through strongSwan using IPsec IKEv2
We will configure a site-to-site IPsec IKEv2 tunnel between the Mikrotik Router and the StrongSwan server. This will enable secure communication between devi...
Monitor HA Cluster running Pacemaker and Corosync using Prometheus and Grafana using Docker
We will use Grafana with prometheus in container to monitor High availability cluster running by Pacemaker and Corosync.