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Daemons
pve-cluster: This service is the heart of any
Proxmox VE installation. It provides the
Proxmox_Cluster_file_system (pmxcfs), a
database-driven file system for storing
configuration files, replicated in real time
on all nodes using corosync.
pvedaemon is the REST API server. All API
calls which require root privileges are done
using this Server.
pveproxy is the REST API proxy server,
listening on port 8006 - used in PVE 3.0+
onwards. This service run as user 'www-
data', and forwards request to other nodes
(or pvedaemon) if required. API calls which
do not require root privileges are directly
answered by this server.
pvestatd is the PVE Status Daemon. It queries the
status of all resources (VMs, Containers and Storage),
and send the result to all cluster members.
pve-manager is just a startup script (not a daemon),
used to start/stop all VMs and Containers.
pve-firewall: Proxmox VE Firewall manages the
Firewall(iptables) which works cluster wide.
pvefw-logger: Proxmox VE Firewall logger logs the
Firewall events.
pve-ha-crm is the Proxmox VE High Availability Cluster
Resource Manager, he manage the cluster which
means there is only one active if a ha-resource is set,
and this is the cluster master.
pve-ha-lrm This is the Proxmox VE High Availability
Local Resource Manager, every node has an active lrm
if ha is enabled.
https://pve.proxmox.com/wiki/Service_daemons