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DevOps & observability · #proxmox
A technical guide on designing Proxmox VE clusters, focusing on quorum requirements for even/odd node counts, IPMI fencing configuration, and NUMA resource allocation.
ZFS gives Proxmox VE native snapshots, clones, compression and checksums for local VM disks, but it demands RAM for ARC, direct disk access via HBA IT mode, and careful capacity planning to avoid CoW fragmentation.
Proxmox VE's built-in ZFS replication ships incremental VM disk snapshots to a second node on a schedule, giving you fast manual failover without shared storage — here's how it works, how to set it up, and where its limits are.
Step‑by‑step guide to set up pvesr replication jobs, verify snapshots, and fail over a VM or container to a second node without shared storage.
A Ceph OSD marked down or out in Proxmox usually means a crashed daemon, a failing disk, or a network partition. Here's how to tell them apart and fix each safely.
Learn how Proxmox VE High Availability automatically moves VMs and containers to healthy nodes after a host failure, what configuration is required, and how to verify and limit the risks.
Discover how Proxmox Backup Server delivers deduplicated, encrypted VM backups with flexible restore options, and learn the key trade‑offs and best‑practice configuration for production environments.
Configure Proxmox VE’s native ZFS replication scheduler to create point‑in‑time VM and container copies for low‑RPO warm standby and off‑site disaster recovery.
Guide to building a minimal three‑node Proxmox VE HA cluster: requirements, design, trust boundaries, checks, and failure modes.