External Metric Server
In Proxmox VE, you can define external metric servers, which will periodically receive various stats about your hosts, virtual guests and storages.
Currently supported are:
Graphite (see http://graphiteapp.org )
InfluxDB (see https://www.influxdata.com/time-series-platform/influxdb/ )
The external metric server definitions are saved in /etc/pve/status.cfg, and can be edited through the web interface.
Graphite server configuration
By default, Proxmox VE sends the data over UDP, so the graphite server has to be configured to accept this. Here the maximum transmission unit (MTU) can be configured for environments not using the standard 1500 MTU.
You can also configure the plugin to use TCP. In order not to block the important pvestatd statistic collection daemon, a timeout is required to cope with network problems.
Influxdb plugin configuration
Proxmox VE sends the data over UDP, so the influxdb server has to be configured for this. The MTU can also be configured here, if necessary.
Here is an example configuration for influxdb (on your influxdb server):
[[udp]] enabled = true bind-address = "0.0.0.0:8089" database = "proxmox" batch-size = 1000 batch-timeout = "1s"
With this configuration, your server listens on all IP addresses on port 8089, and writes the data in the proxmox database