Openhab Error messages to external Management system (SNMP)

Setup, Configuration and Use Installation
1

I’m looking for a solution where error messages from openhab are being sent to an external Management system, e.g. via SNMP.
Ideally openhab would support a kind of SNMP appender in the log4j logger architecture.

Any thoughts?

best regards
Thomas

2

this: https://logging.apache.org/log4j/2.x/manual/appenders.html should be more than enough :slight_smile:

3

Thanks Dim!
I saw this already but wasn’t sure if just adding the appender configuration to org.ops4j.pax.logging.cfg would work (without any modification within the openhab code) ?

I’ll give it a try anyway.

regards
Thomas

4

Hi Thomas,

Which openHAB version are you using?

The link that I gave you will work for log4j2 (which can be found on OH2.2 +)

In theory, you don’t need any modifications to the openhab code to configure custom destinations for log4j2 (I haven’t tried it… but it should work)

5

Hi Dim,

this is excellent feedback, much appreciated.
I’m using OH2.2, so as I said I will give it a try, and will report the outcome.

Thanks again!

regards
Thomas

1 Like
6

It is working!
Let me just briefly post my /var/lib/openhab2/etc/org.ops4j.pax.logging.cfg

(don’t forget to add the appender to root logger parameters )

Root logger

log4j.rootLogger = WARN, email, out, osgi:*
.
.
.
.
.
#SMTP appender
log4j.appender.email=org.apache.log4j.net.SMTPAppender
log4j.appender.email.SMTPHost=xxxxx
log4j.appender.email.SMTPPort=25
log4j.appender.email.SMTPUsername=yyyyy
log4j.appender.email.SMTPPassword=yyyyyy
log4j.appender.email.From=zzzz@hhh.net
log4j.appender.email.To=ffffff@hhh.net
log4j.appender.email.Subject=openhab Log of messages
log4j.appender.email.BufferSize=1
log4j.appender.email.layout=org.apache.log4j.PatternLayout
log4j.appender.email.layout.ConversionPattern=%m

7

glad you got it working! :slight_smile:

…careful with that Buffer… you may spam your SMTP host :stuck_out_tongue:

(on the other hand… There should be very few WARN level messages on a stable OH2 deployment, so it should be ok)

by the way: log4j or log4j2 ?