[[external_metric_server]]
External Metric Server
----------------------
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[thumbnail="screenshot/gui-datacenter-metric-server-list.png"]

In {pve}, you can define external metric servers, which will
be sent various stats about your hosts, virtual machines and storages.

Currently supported are:

 * Graphite (see http://graphiteapp.org )
 * InfluxDB (see https://www.influxdata.com/time-series-platform/influxdb/ )

The server definitions are saved in '/etc/pve/status.cfg', and can be edited
through the GUI.

[[metric_server_graphite]]
Graphite server configuration
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[thumbnail="screenshot/gui-datacenter-metric-server-graphite.png"]

The default port is set to *2003* and the default path is *proxmox*.

{pve} sends the data over UDP, so the graphite server has to be configured
for this. Here the MTU can be configured for environments which require
a different mtu than the standard *1500*.

Alternatively, the plugin can be configured to use TCP instead with
a timeout. Here the timeout is important, as to not block the stat generating
process forever.

[[metric_server_influxdb]]
Influxdb plugin configuration
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[thumbnail="screenshot/gui-datacenter-metric-server-influxdb.png"]

{pve} 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