high-availability – ITFROMZERO

The Secret to Server ‘Immortality’: Configuring HA Clusters with Pacemaker and Corosync

By admin April 17, 2026

Learn how to build a High Availability (HA) Cluster with Pacemaker and Corosync on CentOS/Rocky Linux. A detailed guide from installation and Virtual IP configuration to handling Split-brain errors.

Virtualization

Proxmox HA: The Ultimate System Rescue at 2 AM Without Leaving Your Bed

By admin April 10, 2026

A hands-on guide to configuring Proxmox VE Cluster and High Availability (HA). This solution enables automatic VM recovery during physical server failures, ensuring maximum uptime for businesses.

Virtualization

Deploying Ceph Storage on Proxmox VE: A High Availability Distributed Storage Solution

By admin April 5, 2026

A detailed guide on configuring Ceph Storage on Proxmox VE to build a distributed storage system. This solution enables virtual machines to automatically recover and operate continuously even during server hardware failures.

MySQL

MySQL Group Replication: The High Availability Lifesaver for Production Databases

By admin March 30, 2026

Eliminate downtime worries with this MySQL Group Replication configuration guide. A high-availability database solution featuring auto-failover and absolute data consistency.

Network

Keepalived Configuration Guide: Building Virtual IP and High Availability on Linux

By admin March 23, 2026

Ever worried about system downtime? Keepalived helps solve this by creating Virtual IPs and ensuring high availability, keeping your services online.

Database

How to Install and Configure PostgreSQL Streaming Replication: Real-time Data Synchronization between Primary and Standby

By admin March 13, 2026

Learn how to set up PostgreSQL Streaming Replication for High Availability and Disaster Recovery. A step-by-step guide to configuration and data synchronization between Primary and Standby.

MySQL

Setting Up and Configuring ProxySQL: A Connection Pooler and Load Balancer Solution for MySQL Production

By admin March 12, 2026

ProxySQL is a powerful connection pooler and load balancer that optimizes performance and stability for MySQL production. This article provides a guide to basic and advanced installation and configuration, along with practical tips for effective ProxySQL deployment, addressing connection management and load distribution issues.

Network

How to Set Up a Load Balancer with HAProxy on Linux

By admin March 8, 2026

A practical guide to configuring HAProxy as a load balancer: from installation and roundrobin/leastconn/source algorithms to HTTP health checks, SSL termination, and zero-downtime server draining. Tips drawn from real production experience.

Database

Setting Up and Configuring Redis Sentinel: High Availability for Redis in Production

By admin March 7, 2026

A practical guide to setting up a 3-node Redis Sentinel cluster for high availability in production: configuring master-replica replication, automatic failover, connecting applications through Sentinel, and common operational pitfalls.