icinga2 on ubuntu 16.04 logs every single api call to /var/log/syslog.

I`m attempting to run icinga2 on xenial (ubuntu 16.04.1). I get a log of api related statements in my syslog. I have some automated integration running every 3 seconds, producing 10+ lines per run.

Dec 16 15:02:43 dev-srv-01 icinga2[763]: [2016-12-16 15:02:41 -0500] information/HttpServerConnection: Request: GET /v1/objects/hosts/xxx?attrs[]=address&attrs[]=vars (root)
Dec 16 15:02:43 dev-srv-01 icinga2[763]: [2016-12-16 15:02:42 -0500] information/ApiListener: New client connection (no client certificate)

Indeed icinga logs actions (apilistener.cpp:403)

Log(LogInformation, "ApiListener") << "New client connection " << conninfo << " (no client certificate)";

How to I configure this log so it is less verbose? I couldn't quite figure it out from the documentation.

This is my configuration so far:

Disabled features: gelf graphite icingastatus mainlog opentsdb perfdata statusdata syslog
Enabled features: api checker command compatlog debuglog ido-mysql livestatus notification

I also create this file: /etc/icinga2/conf.d/api-users.conf

object ApiUser "root" {
     password = "x.x"
     permissions = [ "objects/*/Host" ]

systemd service:

Description=Icinga host/service/network monitoring system
After=postgresql.service mariadb.service carbon-cache.service mysql.service yslog.target

ExecStartPre=/usr/lib/icinga2/prepare-dirs /usr/lib/icinga2/icinga2
ExecStart=/usr/sbin/icinga2 daemon -e /var/log/icinga2/error.log
ExecReload=/usr/lib/icinga2/safe-reload /usr/lib/icinga2/icinga2


The only way to prevent the log statements is to disable feature api, which of course isn't desirable.

I attempted configuring syslog, filelogger, in a .conf file to no avail. Disabling features debuglog, mainlog, also result in spam.

Thank you!

3 Answers 3


It looks like that is an "Information"-level log entry. To remove it you'll need to change your logging to a higher level. In


I have

object FileLogger "main-log" {
  severity = "information"
  path = LocalStateDir + "/log/icinga2/icinga2.log"

According to the docs the next step up from "information" would be "warning".

It looks like the same setting should be available for the SyslogLogger which should be the logger you're using.

  • works flawlessly for mainlog. apilistener statements do not make it to icinga2.log anymore. However the "syslog.conf" feature, configured for severity warning, still lets "information" apilistener statements through.
    – louisgab
    Commented Dec 16, 2016 at 20:51

Turns out it could be a systemd thing.

ExecStart=/usr/sbin/icinga2 daemon -e /var/log/icinga2/error.log --log-level warning

fixes the issue in a brute-force way.

This is not quite what I was looking for, but I can live with it.


What you're seeing isn't actually the output of the SyslogLogger feature of Icinga2, but the standard output of the icinga2 process, hence the duplicate timestamp. The documentation says:

When running Icinga 2 on a terminal log messages with severity information or higher are written to the console.

This can be avoided by telling systemd to redirect stdout to /dev/null:

# cat /etc/systemd/system/icinga2.service.d/stdout.conf

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