High Availability on Support Tools

PostgreSQL High Availability with Patroni and Kubernetes: Enterprise Production Guide

Fri, 23 Oct 2026 00:00:00 -0500

Executive Summary

PostgreSQL high availability (HA) is critical for enterprise applications requiring minimal downtime and data consistency. This comprehensive guide explores implementing production-grade PostgreSQL HA using Patroni on Kubernetes, providing automatic failover, seamless cluster management, and enterprise-level reliability.

Key Architecture Components

Patroni: A template for PostgreSQL HA with ZooKeeper, etcd, or Consul for distributed configuration storage and leader election, providing automatic failover and cluster management capabilities.

Kubernetes StatefulSets: Ordered, stable network identities and persistent storage for PostgreSQL instances, ensuring data persistence and predictable pod management.

Persistent Volumes: Enterprise-grade storage solutions with appropriate performance characteristics for database workloads, supporting synchronous replication and point-in-time recovery.

Monitoring Stack: Comprehensive observability with Prometheus, Grafana, and custom alerting for proactive issue detection and performance optimization.

Multi-Region Kubernetes Federation Patterns: Enterprise Architecture Guide

Tue, 29 Sep 2026 00:00:00 -0500

Building globally distributed Kubernetes infrastructure requires sophisticated federation patterns that span multiple regions, cloud providers, and data centers. Multi-region Kubernetes deployments provide high availability, disaster recovery capabilities, and improved user experience through geographic proximity. This comprehensive guide explores enterprise-grade federation architectures, implementation patterns, and operational strategies for managing distributed Kubernetes environments at scale.

MinIO Object Storage on Kubernetes: Enterprise Implementation Guide

Wed, 23 Sep 2026 00:00:00 -0500

MinIO provides high-performance, S3-compatible object storage that’s perfect for cloud-native applications on Kubernetes. This comprehensive guide covers enterprise deployment patterns, multi-tenancy configuration, security hardening, and performance optimization for production MinIO clusters.

Pod Disruption Budgets in Practice: Ensuring Kubernetes Application Availability

Sat, 05 Sep 2026 00:00:00 -0500

Pod Disruption Budgets (PDBs) protect application availability during voluntary disruptions by limiting the number of pods that can be simultaneously unavailable. This guide covers PDB design patterns, best practices, integration with autoscaling, and troubleshooting strategies for production environments.

High-Availability Network Design Patterns: Enterprise Infrastructure Guide

Thu, 30 Jul 2026 00:00:00 -0500

High-availability network design patterns are essential for enterprise environments that require continuous uptime and resilient infrastructure. This comprehensive guide explores advanced redundancy strategies, failover mechanisms, and production-ready design patterns that ensure network resilience and business continuity.

HAProxy Ingress Advanced Features and Enterprise Deployment: Complete Kubernetes Guide

Tue, 28 Jul 2026 00:00:00 -0500

HAProxy Ingress Controller brings the battle-tested performance and flexibility of HAProxy to Kubernetes environments. Known for its exceptional performance in high-traffic scenarios, advanced load balancing algorithms, and granular control over traffic routing, HAProxy Ingress is the choice of enterprises requiring maximum throughput and fine-grained configuration capabilities.

This comprehensive guide explores advanced HAProxy Ingress features, enterprise deployment patterns, performance optimization techniques, and production-tested configurations for handling millions of requests per second across global infrastructure.

Enterprise Docker Registry Security: Private Registry Implementation with High Availability and Compliance for Kubernetes

Fri, 26 Jun 2026 00:00:00 -0500

Private Docker registries serve as critical infrastructure components in enterprise environments, managing container images that power mission-critical applications across distributed Kubernetes clusters. Securing these registries requires sophisticated approaches to authentication, authorization, vulnerability management, and compliance monitoring. This comprehensive implementation guide demonstrates enterprise-grade Docker registry deployment patterns with advanced security hardening, high availability architecture, and production-ready operational practices.

Cloud-Native Disaster Recovery Architectures: Enterprise Implementation Guide

Wed, 13 May 2026 00:00:00 -0500

Disaster recovery (DR) in cloud-native environments requires fundamentally different approaches compared to traditional infrastructure. With Kubernetes orchestrating containerized workloads across distributed systems, organizations must implement sophisticated DR strategies that account for application state, persistent data, configuration, and infrastructure-as-code. This comprehensive guide covers enterprise-grade disaster recovery architectures, automation patterns, and operational procedures for cloud-native environments.

ElastiCache Redis Replication Group and RDS Proxy Limits

Thu, 04 Sep 2025 09:00:00 -0500

ElastiCache Redis Replication Group and RDS Proxy Limits

Two settings cause most of the confusion when you put ElastiCache in front of RDS and RDS Proxy between the application and the database: num_cache_clusters on the ElastiCache replication group, and the connection ceiling RDS Proxy reports as MaxDatabaseConnectionsAllowed. This page answers both, then shows the full RDS, RDS Proxy and ElastiCache architecture in Terraform.

Quick answer

num_cache_clusters in aws_elasticache_replication_group is the total number of nodes (one primary plus read replicas) in a replication group with cluster mode disabled. num_cache_clusters = 3 means one primary and two replicas. It must be at least 2 when automatic_failover_enabled or multi_az_enabled is true, defaults to 1, and conflicts with num_node_groups and replicas_per_node_group, which you use instead for cluster mode enabled (sharded) groups.

Amazon Aurora MySQL Blue/Green Deployments: Comprehensive Rollback Strategy Guide

Thu, 28 Aug 2025 09:00:00 -0500

Amazon Aurora MySQL Blue/Green Deployments: Comprehensive Rollback Strategy Guide

Blue/Green deployments for Amazon Aurora MySQL provide a powerful mechanism for zero-downtime database upgrades and schema changes. However, even with thorough testing, you may occasionally need to roll back after a switchover. This comprehensive guide outlines proven strategies for planning, preparing, and executing rollbacks for Aurora MySQL blue/green deployments.

Understanding Aurora MySQL Blue/Green Deployments

Before diving into rollback strategies, let’s understand the blue/green deployment model for Aurora MySQL:

Enterprise Backup and Disaster Recovery: Comprehensive Automation Framework for Production Infrastructure and Business Continuity

Tue, 27 May 2025 10:00:00 -0500

Enterprise backup and disaster recovery require sophisticated automation frameworks, comprehensive business continuity planning, and robust data protection strategies that ensure rapid recovery from any type of infrastructure failure or disaster. This guide covers advanced backup architectures, automated disaster recovery systems, business continuity frameworks, and production-grade recovery solutions for mission-critical environments.

RKE2 the Hard Way: Part 4 – Setting up etcd Cluster as Static Pods

Tue, 01 Apr 2025 00:00:00 +0000

Part 4 – Setting up etcd Cluster as Static Pods

In this part of the “RKE2 the Hard Way” training series, we will set up etcd as a clustered key-value store using static pods managed by kubelet. etcd is a consistent and highly-available key-value store used by Kubernetes to store all cluster data, including the state of the cluster, configuration data, and metadata.

In RKE2, etcd is deployed as a static pod managed by kubelet, instead of running directly as a systemd service. This makes it easier to manage, as kubelet handles lifecycle operations, restarts, and monitoring.

RKE2 the Hard Way: Part 5 – Setting up kube-apiserver as Static Pods

Tue, 01 Apr 2025 00:00:00 +0000

Part 5 – Setting up kube-apiserver as Static Pods

In this part of the “RKE2 the Hard Way” training series, we will set up the Kubernetes API Server (kube-apiserver) as static pods managed by kubelet on each of our nodes. The API server is the central component of the Kubernetes control plane that exposes the Kubernetes API.

Using static pods for the API server is a key design principle in RKE2. This approach simplifies deployment and management, as kubelet will automatically start the API server and ensure it stays running. If an API server instance fails, kubelet will automatically restart it.

High Availability Setup with CNPG PostgreSQL Operator

Wed, 15 Jan 2025 22:45:00 -0500

Ensuring high availability (HA) for your databases is crucial in modern production environments. PostgreSQL, a powerful open-source relational database, can achieve HA through various methods. In this guide, we’ll walk you through setting up a highly available PostgreSQL cluster using the CloudNativePG (CNPG) PostgreSQL Operator in a Kubernetes environment.

Longhorn High Availability Configuration

Wed, 01 Jan 2025 00:00:00 -0500

This guide covers high availability configuration for Longhorn storage, including replica management, node failure handling, and disaster recovery strategies.