FUCKUP #007: The VM That Was Almost Out of Memory—According to Proxmox
The symptom The Proxmox GUI showed that a Linux VM was using almost all of its assigned memory: 7.71 / 8 GiB used 96.36% That looked serious enough to trigger a support ticket. The VM itself remained completely healthy. What made it weird Inside the guest, free -h reported approximately: 1 GiB used 4.7 GiB cache 6.4 GiB available Proxmox appeared to show a VM approaching memory exhaustion. The guest showed substantial memory available, and the workload displayed no operational symptoms of memory pressure. ...