This is (already) the third blog post about Proxmox, and it’s what about you could do on standalone Proxmox instances.
When you don’t use Proxmox clustering features, you may want to stop some running services, polluting your system logs.
This has to be considered very experimental and don’t expect replication nor high-availability functionalities to work once you have disabled these services.
systemctl disable –now pve-ha-crm.service
systemctl disable –now pve-ha-lrm.service
systemctl disable –now pvesr.timer
systemctl disable –now corosync.service