opensmtpd

package
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Published: Jul 7, 2019 License: MIT Imports: 11 Imported by: 0

README

OpenSMTPD Input Plugin

This plugin gathers stats from OpenSMTPD - a FREE implementation of the server-side SMTP protocol

Configuration:
 [[inputs.opensmtpd]]
   ## If running as a restricted user you can prepend sudo for additional access:
   #use_sudo = false

   ## The default location of the smtpctl binary can be overridden with:
   binary = "/usr/sbin/smtpctl"

   # The default timeout of 1s can be overriden with:
   #timeout = "1s"
Measurements & Fields:

This is the full list of stats provided by smtpctl and potentially collected by telegram depending of your smtpctl configuration.

  • smtpctl bounce_envelope bounce_message bounce_session control_session mda_envelope mda_pending mda_running mda_user mta_connector mta_domain mta_envelope mta_host mta_relay mta_route mta_session mta_source mta_task mta_task_running queue_bounce queue_evpcache_load_hit queue_evpcache_size queue_evpcache_update_hit scheduler_delivery_ok scheduler_delivery_permfail scheduler_delivery_tempfail scheduler_envelope scheduler_envelope_expired scheduler_envelope_incoming scheduler_envelope_inflight scheduler_ramqueue_envelope scheduler_ramqueue_message scheduler_ramqueue_update smtp_session smtp_session_inet4 smtp_session_local uptime
Permissions:

It's important to note that this plugin references smtpctl, which may require additional permissions to execute successfully. Depending on the user/group permissions of the telegraf user executing this plugin, you may need to alter the group membership, set facls, or use sudo.

Group membership (Recommended):

$ groups telegraf
telegraf : telegraf

$ usermod -a -G opensmtpd telegraf

$ groups telegraf
telegraf : telegraf opensmtpd

Sudo privileges: If you use this method, you will need the following in your telegraf config:

[[inputs.opensmtpd]]
  use_sudo = true

You will also need to update your sudoers file:

$ visudo
# Add the following line:
Cmnd_Alias SMTPCTL = /usr/sbin/smtpctl
telegraf  ALL=(ALL) NOPASSWD: SMTPCTL
Defaults!SMTPCTL !logfile, !syslog, !pam_session

Please use the solution you see as most appropriate.

Example Output:
 telegraf --config etc/telegraf.conf --input-filter opensmtpd --test
* Plugin: inputs.opensmtpd, Collection 1
> opensmtpd,host=localhost scheduler_delivery_tempfail=822,mta_host=10,mta_task_running=4,queue_bounce=13017,scheduler_delivery_permfail=51022,mta_relay=7,queue_evpcache_size=2,scheduler_envelope_expired=26,bounce_message=0,mta_domain=7,queue_evpcache_update_hit=848,smtp_session_local=12294,bounce_envelope=0,queue_evpcache_load_hit=4389703,scheduler_ramqueue_update=0,mta_route=3,scheduler_delivery_ok=2149489,smtp_session_inet4=2131997,control_session=1,scheduler_envelope_incoming=0,uptime=10346728,scheduler_ramqueue_envelope=2,smtp_session=0,bounce_session=0,mta_envelope=2,mta_session=6,mta_task=2,scheduler_ramqueue_message=2,mta_connector=7,mta_source=1,scheduler_envelope=2,scheduler_envelope_inflight=2 1510220300000000000

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Opensmtpd

type Opensmtpd struct {
	Binary  string
	Timeout internal.Duration
	UseSudo bool
	// contains filtered or unexported fields
}

Opensmtpd is used to store configuration values

func (*Opensmtpd) Description

func (s *Opensmtpd) Description() string

func (*Opensmtpd) Gather

func (s *Opensmtpd) Gather(acc telegraf.Accumulator) error

Gather collects the configured stats from smtpctl and adds them to the Accumulator

All the dots in stat name will replaced by underscores. Histogram statistics will not be collected.

func (*Opensmtpd) SampleConfig

func (s *Opensmtpd) SampleConfig() string

SampleConfig displays configuration instructions

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