Here's the cloudstack code for the SNMP appender:
https://github.com/apache/cloudstack/blob/4.18/plugins/alert-handlers/snmp-alerts/src/main/java/org/apache/cloudstack/alert/snmp/SnmpTrapAppender.java
Here's the appender as configured in my log4j-cloud.xml file:
<appender name="SNMP" class=
"org.apache.cloudstack.alert.snmp.SnmpTrapAppender">
<param name="Threshold" value="WARN"/>
<param name="SnmpManagerIpAddresses" value="<redacted>"/>
<param name="SnmpManagerPorts" value="162"/>
<param name="SnmpManagerCommunities" value="public"/>
<layout class=
"org.apache.cloudstack.alert.snmp.SnmpEnhancedPatternLayout">
<param name="PairDelimiter" value="//"/>
<param name="KeyValueDelimiter" value="::"/>
</layout>
</appender>
On Thu, Aug 17, 2023 at 4:36 PM João Jandre Paraquetti <j...@scclouds.com.br>
wrote:
> Hello, Willard
>
> Could you share your whole log4j config file?
>
> I'm asking because the default one will have the following configuration:
>
> <logger name="org.apache.cloudstack.alerts" additivity="false">
> <level value="WARN"/>
> <appender-ref ref="SYSLOG"/>
> <appender-ref ref="CONSOLE"/>
> <appender-ref ref="FILE"/>
> <appender-ref ref="SNMP"/>
> <appender-ref ref="ALERTSYSLOG"/>
> </logger>
>
> This is the only "logger" configuration that is using the SNMP appender
> by default. And the package that it is using
> (`org.apache.cloudstack.alerts`) does not exist. Therefore, it will
> never log anything in the SNMP appender.
>
> After looking at the code, I think that the packages that are meant to
> be appended with the SNMP appender are `com.cloud.alert` and
> `com.cloud.usage`. The interface of these implementations is in
> "org.apache.cloudstack.alert", but still, the configuration there would
> be invalid anyways as "org.apache.cloudstack.alerts" (ending with an
> "s") does not exist. The implementations of that interface are all in
> `com.cloud.alert` and `com.cloud.usage`. Therefore, you could use those
> packages instead. Here is an example of how to configure that:
>
> <logger name="com.cloud.alert" additivity="false">
> <level value="WARN"/>
> <appender-ref ref="SNMP"/>
> </logger>
>
> <logger name="com.cloud.usage" additivity="false">
> <level value="WARN"/>
> <appender-ref ref="SNMP"/>
> </logger>
>
> On 08/08/2023 08:37, Will Conrad wrote:
> > I followed the cloudstack documentation here:
> >
> >
> https://docs.cloudstack.apache.org/en/4.18.0.0/adminguide/management.html?highlight=snmp#configuring-snmp-and-syslog-managers
> >
> > to get SNMP traps working, however, no traps are being sent. I don't see
> > any related errors logged. I see no instances of failed library loads,
> but
> > I do not see. Do I need to manually install the libsnmp4j library myself?
> >
> > I know it's reading the log4j config as I get this notification in the
> > management server log:
> >
> > 2023-08-07 18:20:42,842 INFO [c.c.u.LogUtils] (main:null) (logid:) log4j
> > configuration found at /etc/cloudstack/management/log4j-cloud.xml
> >
> > Here is the log4j config for the SNMP appender (note that I have
> configured
> > syslog as well, and that is working).
> >
> > <appender name="SNMP"
> > class="org.apache.cloudstack.alert.snmp.SnmpTrapAppender">
> >
> > <param name="Threshold" value="WARN"/>
> >
> > <param name="SnmpManagerIpAddresses" value="<redacted>"/>
> >
> > <param name="SnmpManagerPorts" value="162"/>
> >
> > <param name="SnmpManagerCommunities" value="public"/>
> >
> > <layout
> > class="org.apache.cloudstack.alert.snmp.SnmpEnhancedPatternLayout">
> >
> > <param name="PairDelimiter" value="//"/>
> >
> > <param name="KeyValueDelimiter" value="::"/>
> >
> > </layout>
> >
> > </appender>
> >
> > Any insight will be greatly appreciated.
> >
> > Regards,
> >
> > Willard
> >
>
