# Dovecot Input Plugin

The dovecot plugin uses the Dovecot [v2.1 stats protocol][stats old] to gather
metrics on configured domains.

When using Dovecot v2.3 you are still able to use this protocol by following
the [upgrading steps][upgrading].

## Configuration

```toml
# Read metrics about dovecot servers
[[inputs.dovecot]]
  ## specify dovecot servers via an address:port list
  ##  e.g.
  ##    localhost:24242
  ## or as an UDS socket
  ##  e.g.
  ##    /var/run/dovecot/old-stats
  ##
  ## If no servers are specified, then localhost is used as the host.
  servers = ["localhost:24242"]

  ## Type is one of "user", "domain", "ip", or "global"
  type = "global"

  ## Wildcard matches like "*.com". An empty string "" is same as "*"
  ## If type = "ip" filters should be <IP/network>
  filters = [""]
```

## Metrics

- dovecot
  - tags:
    - server (hostname)
    - type (query type)
    - ip (ip addr)
    - user (username)
    - domain (domain name)
  - fields:
    - reset_timestamp (string)
    - last_update (string)
    - num_logins (integer)
    - num_cmds (integer)
    - num_connected_sessions (integer)
    - user_cpu (float)
    - sys_cpu (float)
    - clock_time (float)
    - min_faults (integer)
    - maj_faults (integer)
    - vol_cs (integer)
    - invol_cs (integer)
    - disk_input (integer)
    - disk_output (integer)
    - read_count (integer)
    - read_bytes (integer)
    - write_count (integer)
    - write_bytes (integer)
    - mail_lookup_path (integer)
    - mail_lookup_attr (integer)
    - mail_read_count (integer)
    - mail_read_bytes (integer)
    - mail_cache_hits (integer)

### Example Output

```shell
dovecot,server=dovecot-1.domain.test,type=global clock_time=101196971074203.94,disk_input=6493168218112i,disk_output=17978638815232i,invol_cs=1198855447i,last_update="2016-04-08 11:04:13.000379245 +0200 CEST",mail_cache_hits=68192209i,mail_lookup_attr=0i,mail_lookup_path=653861i,mail_read_bytes=86705151847i,mail_read_count=566125i,maj_faults=17208i,min_faults=1286179702i,num_cmds=917469i,num_connected_sessions=8896i,num_logins=174827i,read_bytes=30327690466186i,read_count=1772396430i,reset_timestamp="2016-04-08 10:28:45 +0200 CEST",sys_cpu=157965.692,user_cpu=219337.48,vol_cs=2827615787i,write_bytes=17150837661940i,write_count=992653220i 1460106266642153907
```

[stats old]: http://wiki2.dovecot.org/Statistics/Old
[upgrading]: https://wiki2.dovecot.org/Upgrading/2.3#Statistics_Redesign
