Technical
Proxmox Cloud-Init Drive Shows as CD-ROM: Expected vs. Broken
Proxmox cloud-init drive shows as cdrom by design. Here's how to tell the expected cloud-init CD-ROM from a real bus or storage remap.
Technical
Proxmox Hookscript Failing When It Does More Than One Thing: Fix the Execution Context
A Proxmox hookscript fails when it tries to do too much at once. The phase argument, locked VM config, and root's environment all change what works.
Technical
Proxmox Kernel Not Updating: Check Apt Pinning and the Meta-Package
Proxmox kernel not updating? It's usually apt pinning or a missing meta-package. Here's how to check both and get the new kernel installed.
Technical
ZFS Pool Suspended: Offline the Disk, Clear the Errors, Online It Again
A SUSPENDED ZFS pool blocks all I/O, so zpool clear and scrub won't work until you offline the problem disk. Here's the order that actually recovers it.
Technical
Proxmox /access/permissions pool: Why GET Returns Wrong Permissions for Pool Members
The Proxmox API endpoint /access/permissions doesn't expand pool ACLs the way you'd think. Here's exactly what it returns for pool-scoped roles and how to
Technical
Proxmox iSCSI Uses Management Network Instead of Storage Network: Fix the Interface Binding
Proxmox iSCSI traffic goes over the management network because open-iscsi binds by destination IP.
Technical
audit: PROCTITLE proctitle=”ebtables-restore” spam in dmesg: silence it without disabling the firewall
Those audit: PROCTITLE proctitle="ebtables-restore" lines come from pve-firewall reloading rules. Filter them with an audit rule, not by disabling auditd.
Technical
Proxmox ZFS storage summary: map Size, Used, and Avail to zpool list and zfs list
Proxmox ZFS storage summary shows Size, Used, and Avail from zpool list, but the per-dataset numbers come from zfs list. Here's the mapping.
Technical
Proxmox VM CPU Usage Higher Than in Guest: Which Number Is Real
Proxmox VM CPU usage higher than in guest? The GUI shows host-relative CPU, while the guest reports per-vCPU. Here's the math to convert between them.
Technical
SSH doesn’t work as expected in LXC: fix it with a systematic checklist
SSH doesn't work as expected in LXC? Check the container's network config, sshd service, and host firewall. Here's the end-to-end fix.