<html><head><meta http-equiv="Content-Type" content="text/html charset=UTF-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 27. feb. 2016, at 18.08, Steffen Winther Sørensen <<a href="mailto:stws@siimnet.dk" class="">stws@siimnet.dk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">On 27. feb. 2016, at 02.18, Joshua J. Kugler <<a href="mailto:joshua@azariah.com" class="">joshua@azariah.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Howdy! Setting up collectd is going well. Just hit a couple snags.<br class=""><br class=""> I'm trying to use the JMX plugin to get metrics. I'm implementing information <br class="">I've been handed by others, so don't have 100% introspection into the target <br class="">server. I'm seeing this in the collectd logs: "getAttribute failed: <br class="">javax.management.ReflectionException: No such operation: Count" But...it's not <br class="">telling me the MBean on which it is throwing that error. How could I obtain <br class="">that information?<br class=""></div></div></blockquote>Well you could apply binary search by only enabled half of mbeans at a time and thus narrow in on the bad one.</div><div class="">Or try connecting a JConsole against your app and browse the app. mbeans and verify them.</div><div class=""><br class=""><blockquote type="cite" class=""><div class=""><div class=""><br class="">Also getting this message: GenericJMXConfValue: Cannot convert list of objects <br class="">to numbers., again with no mention of the MBean that is failing. What config <br class="">might I need to change so it will accept the list of objects?<br class=""></div></div></blockquote>No not sure, maybe you’ve gotten multivalued objects and need to be more specific targeting.</div><div class="">I was new to mbeans and confused about naming but found through <a href="https://dl.dropboxusercontent.com/u/13225502/jmxmbeanexample.tiff" class="">jconsole browsing</a> my cassandra mbeans for logstash jmx collection like these:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class="">{</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "host" : "localhost",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "port" : 8081,</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "alias" : "meta",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "queries" : [ {</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_name" : "org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Capacity",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_alias" : "${type}.${scope}.${name}"</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> },{</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_name" : "org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Entries",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_alias" : "${type}.${scope}.${name}"</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> },{</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_name" : "org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=HitRate",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_alias" : "${type}.${scope}.${name}"</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> },{</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_name" : "org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Size",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_alias" : "${type}.${scope}.${name}"</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> },{</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_name" : "org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Hits",</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "attributes" : ["Count","FifteenMinuteRate","FiveMinuteRate","OneMinuteRate","MeanRate","RateUnit","EventType"],</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> "object_alias" : "${type}.${scope}.${name}"</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> }</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""> } ]</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class="">}</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""><br class=""></div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class="">Maybe it’ll help lead you in right direction...</div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class=""><br class=""></div><div style="margin: 0px; font-size: 14px; line-height: normal; font-family: Courier; color: rgb(76, 47, 45);" class="">/Steffen</div></div><div class=""><br class=""></div><br class=""></div></div></blockquote></div><br class=""></body></html>