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IPVS Input Plugin

The IPVS input plugin uses the linux kernel netlink socket interface to gather metrics about ipvs virtual and real servers.

Supported Platforms: Linux

Global configuration options

In addition to the plugin-specific configuration settings, plugins support additional global and plugin configuration settings. These settings are used to modify metrics, tags, and field or create aliases and configure ordering, etc. See the CONFIGURATION.md for more details.

Configuration

# Collect virtual and real server stats from Linux IPVS
# This plugin ONLY supports Linux
[[inputs.ipvs]]
  # no configuration

Permissions

Assuming you installed the telegraf package via one of the published packages, the process will be running as the telegraf user. However, in order for this plugin to communicate over netlink sockets it needs the telegraf process to be running as root (or some user with CAP_NET_ADMIN and CAP_NET_RAW). Be sure to ensure these permissions before running telegraf with this plugin included.

Metrics

Server will contain tags identifying how it was configured, using one of address + port + protocol OR fwmark. This is how one would normally configure a virtual server using ipvsadm.

  • ipvs_virtual_server

    • tags:
      • sched (the scheduler in use)
      • netmask (the mask used for determining affinity)
      • address_family (inet/inet6)
      • address
      • port
      • protocol
      • fwmark
    • fields:
      • connections
      • pkts_in
      • pkts_out
      • bytes_in
      • bytes_out
      • pps_in
      • pps_out
      • cps

  • ipvs_real_server

    • tags:
      • address
      • port
      • address_family (inet/inet6)
      • virtual_address
      • virtual_port
      • virtual_protocol
      • virtual_fwmark
    • fields:
      • active_connections
      • inactive_connections
      • connections
      • pkts_in
      • pkts_out
      • bytes_in
      • bytes_out
      • pps_in
      • pps_out
      • cps

Example Output

Virtual server is configured using fwmark and backed by 2 real servers:

ipvs_virtual_server,address=172.18.64.234,address_family=inet,netmask=32,port=9000,protocol=tcp,sched=rr bytes_in=0i,bytes_out=0i,pps_in=0i,pps_out=0i,cps=0i,connections=0i,pkts_in=0i,pkts_out=0i 1541019340000000000
ipvs_real_server,address=172.18.64.220,address_family=inet,port=9000,virtual_address=172.18.64.234,virtual_port=9000,virtual_protocol=tcp active_connections=0i,inactive_connections=0i,pkts_in=0i,bytes_out=0i,pps_out=0i,connections=0i,pkts_out=0i,bytes_in=0i,pps_in=0i,cps=0i 1541019340000000000
ipvs_real_server,address=172.18.64.219,address_family=inet,port=9000,virtual_address=172.18.64.234,virtual_port=9000,virtual_protocol=tcp active_connections=0i,inactive_connections=0i,pps_in=0i,pps_out=0i,connections=0i,pkts_in=0i,pkts_out=0i,bytes_in=0i,bytes_out=0i,cps=0i 1541019340000000000

Virtual server is configured using proto+addr+port and backed by 2 real servers:

ipvs_virtual_server,address_family=inet,fwmark=47,netmask=32,sched=rr cps=0i,connections=0i,pkts_in=0i,pkts_out=0i,bytes_in=0i,bytes_out=0i,pps_in=0i,pps_out=0i 1541019340000000000
ipvs_real_server,address=172.18.64.220,address_family=inet,port=9000,virtual_fwmark=47 inactive_connections=0i,pkts_out=0i,bytes_out=0i,pps_in=0i,cps=0i,active_connections=0i,pkts_in=0i,bytes_in=0i,pps_out=0i,connections=0i 1541019340000000000
ipvs_real_server,address=172.18.64.219,address_family=inet,port=9000,virtual_fwmark=47 cps=0i,active_connections=0i,inactive_connections=0i,connections=0i,pkts_in=0i,bytes_out=0i,pkts_out=0i,bytes_in=0i,pps_in=0i,pps_out=0i 1541019340000000000