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Architecture note for DigitalOcean Managed PostgreSQL high availability: primary-standby design, trust boundaries, monitoring checks, failure modes, and redesign triggers.
Use a PodDisruptionBudget to limit how many matching pods can be evicted at once during node drains and autoscaler scale-in.
Proxmox VE HA uses Pacemaker to move VMs automatically when a node fails. This guide walks through cluster prerequisites, fencing, a live failover test, and the trade‑offs you need to consider before enabling HA.
A task guide for configuring Dovecot dsync replication to keep a standby mailbox server in sync, with verification steps and safe failover procedures.
Deploy Nomad jobs across regions with federation and keep them running even when a region fails. Learn how to configure shared Consul, spread allocations, and handle trade‑offs in this step‑by‑step guide.
Learn the smallest viable Always On AG that guarantees zero data loss, its trust boundaries, key operational checks, and when to revisit the design.
When a k3s HA cluster with an external etcd fails to start, the logs typically show connection errors and the API server pods crash. This guide walks through a quick diagnosis – from endpoint reachability to TLS validation – and outlines fixes and when to seek help.
A Proxmox VE HA cluster needs more than shared storage: it requires corosync quorum, watchdog fencing, and separated network planes. This architecture note covers the smallest viable design, trust boundaries, operational checks, and when to reconsider the approach.
Enabling high availability for a Gardener shoot changes replica counts and pod topology in the seed, not worker nodes. Here is what the etcd quorum trade-off means and how to verify placement.
digitalocean
kubernetes
dovecot
nomad
microsoftsqlserver
k3s
proxmox
gardener