Another +1 for Jolokia. We've got a pretty cool setup here that deploys Jolokia alongside Kafka, and we wrote a small Sensu plugin to grab all the stats from Jolokia's JSON API and reformat them for Graphite.
On Thu, Mar 31, 2016 at 4:36 PM, craig w <codecr...@gmail.com> wrote: > Including jolokia would be great, I've used for kafka and it worked well. > On Mar 31, 2016 6:54 PM, "Christian Posta" <christian.po...@gmail.com> > wrote: > > > What if we added something like this to Kafka? https://jolokia.org > > I've added a JIRA to do that, just haven't gotten to it yet. Will soon > > though, especially if it'd be useful for others. > > > > https://issues.apache.org/jira/browse/KAFKA-3377 > > > > On Thu, Mar 31, 2016 at 2:55 PM, David Sidlo <dsi...@ancestry.com> > wrote: > > > > > The Kafka JmxTool works fine although it is not user friendly, in that > > you > > > cannot perform a query of the Kafka Server mbeans to determine content > > and > > > to determine the path-string that you need to place into the > -object-name > > > option. > > > > > > Here's how I solved the problem... > > > > > > First, make sure that Kafka is running with jms options enabled... > > > > > > - The following opens up the jxm port with no authentication > > (for > > > testing)... > > > -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9999 > > > -Dcom.sun.management.jmxremote.ssl=false > > > -Dcom.sun.management.jmxremote.authenticate=false > > > > > > Second, get jstatd running on the same server so that you can use > > VisualVM > > > to look into what is going on inside. > > > > > > Then, use VisualVM along with its jmx-plugin to view the mbeans and > > > contents. > > > > > > When using VisualVM, you will first connect to jstatd, then you have to > > > right click on the host to request a JMX connection, where you will > get a > > > dialog, where you have to add the jmx port number to the host name > (after > > > the colon). > > > > > > When you view the mbeans, you will see the path to the given attribute > if > > > you hover over it with the mouse pointer, but only for a moment... The > > > string can be quite long and... Unfortunately, you don't have the > option > > to > > > capture that string into the cut-buffer via the interface. I used a > > screen > > > capture utility to capture the string and typed it into the terminal. > > > > > > So here is what my first working query looked like... > > > > > > /opt/kafka/kafka/bin/kafka-run-class.sh kafka.tools.JmxTool > --object-name > > > > > > "kafka.consumer:type=FetchRequestAndResponseMetrics,name=FetchRequestRateAndTimeMs,clientId=ReplicaFetcherThread-0-5,brokerHost= > > > hostname05.cluster.com,brokerPort=9092" --jmx-url > > > service:jmx:rmi:///jndi/rmi://`hostname`:9999/jmxrmi > > > > > > That command will output all of the attributes for the given > object-name, > > > and it's a long object-name. > > > With some experimentation, I found that you can use wild-cards on > > portions > > > of the object-name that were clearly dynamic, such as the host-name or > > the > > > thread-name. So you can get the attribute for all similar objects by > > using > > > the following query... > > > > > > /opt/kafka/kafka/bin/kafka-run-class.sh kafka.tools.JmxTool > --object-name > > > > > > "kafka.consumer:type=FetchRequestAndResponseMetrics,name=FetchRequestRateAndTimeMs,clientId=ReplicaFetcherThread*,brokerHost=hostname*. > > > cluster.com,brokerPort=*" --jmx-url > > > service:jmx:rmi:///jndi/rmi://`hostname`:9999/jmxrmi > > > > > > There may be simpler tools to use, but I really do like the GUI > goodness > > > in VisualVM, (and it is free). > > > > > > I hope that helps. > > > > > > > > > > > > > > > > > > -- > > *Christian Posta* > > twitter: @christianposta > > http://www.christianposta.com/blog > > http://fabric8.io > > >
