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How pfSense CARP, XMLRPC sync, and pfsync combine to give you a high-availability firewall pair — with a concrete two-node setup, verification steps, and the gotchas that cause split-brain.
Learn how to set up a minimal yet resilient Search Head Cluster in Splunk, including required components, configuration snippets, operational validation, and when to move beyond two peers.
A technical guide on designing Proxmox VE clusters, focusing on quorum requirements for even/odd node counts, IPMI fencing configuration, and NUMA resource allocation.
Step‑by‑step guide to configure pfSense HA with CARP for active‑passive failover, including prerequisites, setup, verification, and recovery.
Learn how a PodDisruptionBudget keeps a minimum number of your application’s pods running while you drain or upgrade nodes, and see the trade‑offs of setting it too tightly.
An architecture note on when MariaDB Galera is the right high-availability choice: minimal three-node design, trust boundaries, the status variables that matter, failure modes, and when to pick async replication.
Learn how to implement DigitalOcean Floating IPs to eliminate DNS propagation delays and achieve near-instant failover for high-availability Droplet architectures.
Learn the requirements, smallest viable topology, trust boundaries, operational checks, failure modes, and triggers for redesigning a Splunk Indexer Cluster that tolerates a single node loss.
Mattermost HA clustering relies on stateless app servers, a shared PostgreSQL database, and Redis pub/sub. This guide details the minimal architecture, trust boundaries, operational checks, failure modes, and when a design change is needed.
splunk
kubernetes
redis