I am facing this issue in multiple nodes.
Node shows grey in cluster, but ssh works and *the proxy service it is not active*
When I start proxy i get the message
"start failed - can't aquire lock '/var/run/pveproxy/pveproxy.pid.lock' - Resource temporarily unavailable"
Only solution is to...
I faced another issue with Promxox 5.1-46 and windows 2003.
After few hours it shows blue screen.
I tried all possible combinations of CPU, Drive and other settings, still same issue.
It was a running KVM on Proxmox 3.4, issue started after migrating to 5.1.46.
System crashed and restarted time 20:02:00
(I have 25 live nodes, 1 or 2 nodes crashes like this everyday. )
Mar 29 19:39:42 Q172 pvedaemon: <root@pam> successful auth for user 'root@pam'
Mar 29 19:39:56 Q172 pvedaemon: <root@pam> successful auth for user 'root@pam'
With default settings, node crashes when I start the 4th guest.
With changed settings node does not crash when i start 4th guest, since it starts KSM early enough.
I think it is more like LXC related issues than a bug.
In KVM I didn't face any issues.
pve-kernel-4.15.10-1-pve also has the above KSM sharing issue.
If you have plenty of memory, you will not see it.
I have 25+ nodes, and i don't have plenty of memory, so i see it often.
But after setting the % of KSM thresh hold., i d didn't face any issue.