HttpMonitor Config was working fine with tomcat7 and http service was getting detected however as we have updated to tomcat 8.5 http service is not getting discovered unless we set connector properties as sendReasonPhrase=true, the difference in the curl response is like below in compare to tomcat7 and tomcat 8.5 (withoutsend Reson Phrase parameter set)
tomcat7 gives ok in its header and tomcat8.5 does not.
however option for sendreson phase will be deprecated and removed from tomcat9 and even this option will not be available (https://tomcat.apache.org/tomcat-8.5-doc/config/http.html)
I am not sure why httpMonitor in openNms is not able to detect the http service even the snmpwalk output see port 80 available (both with and without send reason phrase)
in poller-configuration.xml looks like below for http
<service name="HTTP" interval="300000" user-defined="false" status="on">
<parameter key="retry" value="1"/>
<parameter key="timeout" value="3000"/>
<parameter key="port" value="80"/>
<parameter key="url" value="/"/>
<parameter key="rrd-repository" value="/var/lib/opennms/rrd/response"/>
<parameter key="rrd-base-name" value="http"/>
<parameter key="ds-name" value="http"/>
</service>
even we tried setting
<parameter key="response-text" value="~\bOK\b"/>
and
<parameter key="response" value="200"/>
however it did not help, i guess above parameter play its role once service got discovered however the problem here the service is not getting discovered (unless SendReson pharse is turn on ) it will only detect http service in tomcat 8.5 if we have sendreson phase turn on in connector definition inside server.xml
Kindly help to understand this behaviour here and possible solution for this without any change on client side.
openNms version info:
