Architecting High Availability with DigitalOcean Managed MongoDB
Learn how to implement a high-availability MongoDB architecture on DigitalOcean using a 2-node managed cluster and VPC isolation to eliminate single points of failure.
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mongodbSeamless Region Failover in Nomad with Handoff – A Practical Guide
Learn how Nomad’s Handoff feature lets you migrate running jobs across regions automatically, reducing downtime during regional failures. Step‑by‑step guide, example config, and trade‑offs included.
Implementing High‑Availability with CARP on pfSense: Minimal Design, Trust Boundaries, and Operational Checks
Build a robust pfSense HA pair with CARP using two identical nodes, shared storage, and health‑driven priority changes. The guide covers minimal hardware, trust boundaries, operational checks, failure modes, and pivot points for scaling or changing conditions.
Configuring Control-Plane High Availability in Gardener Shoots
Learn how to configure control-plane high availability in Gardener using failureTolerance to protect your Shoot clusters from Seed node and zone failures.
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kubernetesConfluence Data Center: Designing the Smallest Viable Cluster
Confluence Server is unsupported. The minimum self-managed design is a two-node Data Center cluster behind a load balancer with shared storage and an external database—here are the boundaries, checks, and failure modes.
Designing High‑Availability PostgreSQL on DigitalOcean with Managed Read Replicas
Deploy a single‑region DigitalOcean Managed PostgreSQL cluster with one read replica to achieve high availability. This guide covers the minimal architecture, trust boundaries, operational checks, failure modes, and when to expand the design.
digitaloceanPreventing State Loss in pfSense CARP High-Availability Clusters
Learn how to implement pfSense CARP for high availability, focusing on state synchronization (pfsync) to prevent connection drops during firewall failovers.
pfsenseDiagnosing RabbitMQ HA Queue Failures: A Practical Checklist
When RabbitMQ HA queues stop surviving node outages or become unresponsive, pinpointing the root cause quickly is vital. This guide walks through a concise diagnostic flow, from cluster health to policy misconfigurations, with concrete checks and remedies.
rabbitmqMaintaining Availability During Node Drains: Choosing a Pod Disruption Budget Strategy
Learn how to use Kubernetes Pod Disruption Budgets (PDBs) to prevent application downtime during node drains and cluster upgrades, and how to avoid common configuration deadlocks.