proxmox error 500

Hi Guys, I recently deployed my proxmox and everything went well until today, i started getting this error: Erro 500: unable to open file '/var/tmp/pve-reserved-ports.tmp.30648 -Read-only file system. I can't login to my proxmox anymore, however i can ping the ip and can still ssh the server.

eror 500: can't lock file '/var/log/pve/tasks/.active.lock' - got timeout) this error is always appears even i have restart the service, anyone can help me to fix it ?

Sorry, but I have to up a thread - https://forum.proxmox.com/threads/ceph-rbd-error-rbd-couldnt-connect-to-cluster-500.18319/#post-172882 Problem was solved on first node only, but not fix on second. P.S.: I had to copy the file (keyring) only on the first node. After that Ceph path was...