Technical
VPS Crashing on Proxmox: Diagnose It with qemu-server and LXC Logs
VPS crashing on Proxmox? Check qemu-server logs, LXC OOM behavior, and a few settings generic guides miss. Here's the diagnostic checklist.
Technical
Uploading certificates caused access issues: fix Proxmox pveproxy user ownership
Uploading certificates caused access issues in Proxmox? The GUI upload breaks ownership on /etc/pve files. Fix it with a single chown command.
Technical
Enterprise iSCSI support in PVE: multipath and CHAP with a TrueNAS target
Enterprise iSCSI support in PVE works fine with a TrueNAS target. Set up multipath for failover and CHAP for auth, but expect some quirks with LUN mapping.
Technical
Can’t Access Proxmox Web GUI: Fix It Fast
Can't access Proxmox web GUI? Check the pveproxy service, port 8006, and your browser's cache. Here's the exact commands to fix it.
Technical
No SSH and GUI Access on Proxmox: Recover from the Console
No SSH and GUI access on Proxmox? Work through this console recovery path: check the network, restart pveproxy and pvedaemon, and verify the cluster
Technical
Proxmox configuration validation: check /etc/pve files before you reboot
Proxmox configuration validation is mostly manual. Use pvesh and pmxcfs to check /etc/pve files before a reboot saves you from a bad VM config.
Technical
proxmox backup server host restore: rebuilding the PBS host and reattaching an existing datastore
When the Proxmox Backup Server host itself dies, the datastore usually survives. Here's how to rebuild the host, reattach the datastore, and get backups running
Technical
Disable cloud-init package updates Proxmox Terraform: the boolean that’s missing
Terraform's Proxmox provider has no boolean to skip cloud-init package updates on VM init. Use the cicustom parameter with a blank user-data file to stop
Technical
NVMe Passthrough Performance on Proxmox: Benchmarks and Trade-offs
NVMe passthrough performance on Proxmox: I benchmarked virtio-blk vs PCIe passthrough. Passthrough wins on latency but loses flexibility.
Technical
Swappiness 1 Small RAM VM Proxmox: Downsides and OOM Risk
Setting swappiness=1 on a small RAM VM in Proxmox cuts swap I/O but can trigger surprise OOM kills. Here's what I measured and when it's worth it.