Michael,
Excellent intuition! This looks very much like an issue with the
InfluxdbWriter queue. It looks like Icinga loses the connection and doesn't
attempt to reconnect, but queues up all the data indefinitely. TLS is enabled,
and the configuration is below. I'm guessing this is
https://github.com/Icinga/icinga2/issues/5469 ?
Regards,
--Jered
From the most recent instance (filtered to InfluxDB-related messages):
[2017-09-18 10:13:11 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 0, rate: 6.03333/s (362/min 1814/5min 5446/15min);
[2017-09-18 10:18:21 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 0, rate: 6.01667/s (361/min 1813/5min 5443/15min);
[2017-09-18 10:23:31 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 0, rate: 5.98333/s (359/min 1814/5min 5441/15min);
[2017-09-18 10:26:58 -0400] warning/InfluxdbWriter: Response timeout of TCP
socket from host '127.0.0.1' port '8086'.
[2017-09-18 10:28:21 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 10, rate: 6.01667/s (361/min 1810/5min 5440/15min);
[2017-09-18 10:28:31 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 68, rate: 6.01667/s (361/min 1810/5min 5440/15min); empty in
11 seconds
[2017-09-18 10:28:41 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 132, rate: 6.01667/s (361/min 1810/5min 5440/15min); empty in
20 seconds
[2017-09-18 10:28:51 -0400] information/WorkQueue: #5 (InfluxdbWriter,
influxdb) items: 200, rate: 6.01667/s (361/min 1810/5min 5440/15min); empty in
29 seconds
... and the queue keeps growing from there. There are no errors noted in the
InfluxDB logs.
/etc/icinga2/features-enabled/influxdb.conf:
/**
* The InfluxdbWriter type writes check result metrics and
* performance data to an InfluxDB HTTP API
*/
library "perfdata"
object InfluxdbWriter "influxdb" {
host = "127.0.0.1"
port = 8086
ssl_enable = true
database = "icinga2"
username = "icinga2"
password = "REDACTED"
enable_send_thresholds = true
enable_send_metadata = true
host_template = {
measurement = "$host.check_command$"
tags = {
hostname = "$host.name$"
}
}
service_template = {
measurement = "$service.check_command$"
tags = {
hostname = "$host.name$"
service = "$service.name$"
}
}
}
----- On Sep 19, 2017, at 9:02 AM, Michael Friedrich
michael.friedr...@icinga.com wrote:
>> On 19. Sep 2017, at 14:51, Jered Floyd <je...@convivian.com> wrote:
>>
>>
>> Icinga Users,
>>
>> I'm running Icinga 2.7.0 on Debian 8.9 (Jessie), using the packages from the
>> official repository.
>>
>> I find that every few weeks Icinga uses up all of the available memory and
>> sub-processes are killed by the OOM-killer repeatedly. (It balloons from an
>> RSS of about 32M to 1GB+.)
>>
>> Data:
>> 1) I haven't yet been able to strongly correlate this with any causative
>> environmental factors.
>
> Any work queue metrics available which would show an increasing value
> (ido-mysql, influxdb, etc.). You can query that via API /v1/status endpoint,
> the “icinga” check or check that inside the logs.
>
>>
>> 2) When this occurs general monitoring continues but statistics are no
>> longer
>> written via the InfluxdbWriter. Not sure if this is cause or effect.
>
> Please share the configuration for InfluxdbWriter, especially whether TLS is
> enabled.
>
> Kind regards,
> Michael
>
>
>>
>> 3) It seems to happen quite rapidly, as the final check_memory logged to
>> InfluxDB shows 1.5 GB free, and a low memory alert is never triggered
>> within
>> Icinga.
>>
>> 4) There was a time when this problem did not exist (several months ago)
>> but I
>> cannot identify when specifically it started.
>>
>> Any suggestions on how to start debugging this issue? Unfortunately my
>> gdb-fu
>> is relatively weak....
>>
>> Thanks,
>> --Jered
>> _______________________________________________
>> icinga-users mailing list
>> icinga-users@lists.icinga.org
>> https://lists.icinga.org/mailman/listinfo/icinga-users
>
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