Monitoring Weblogic 9.2 with JMX and JRuby

17 April, 2008 – 11:23 am

After getting nowhere with lack luster HP support, I turned to the power of the Open Source community and got a very simple script up and running to remotely monitor Weblogic JVM Performance and JMS queues using JMX and JRuby.

Despite having some initial issues with the code, the author of the jmx4r module turned around a fix inside 24 hours so that I could connect to a Weblogic 9.2 server and look at its domainruntime MBeans. SiteScope can’t handle domainruntimes of these size (short of being told to ‘add more memory’ to a 3GB+ machine!). So exit stage left Mercury, enter stage right JRuby…

This script will enumerate JVM performance and also JMS queue depths in around 65 lines of code and spits those results into a MySQL database using the mysqlimport CLI.
I’ve formatted the output so I can still input the data into LoadRunner Analysis.

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require 'rubygems'
require 'jmx4r'
groupid = "mycluster"
JMX::MBean.establish_connection :url => "service:jmx:rmi:///jndi/iiop://hostname:7001/weblogic.management.mbeanservers.domainruntime", :username => "username", :password => "password"
 
open( 'D:\perf_jvm.csv', 'a') do |file|
   runtime_mbeans = JMX::MBean.find_all_by_name "com.bea:Type=JRockitRuntime,*"
   runtime_mbeans.each do | mbean |
		now  = Time.now
		date = "#{now.year}-#{now.month}-#{now.day}"
		time = "#{now.hour}:#{now.min}:#{now.sec}"
 
		data  = []
		if(mbean.object_name.get_key_property("Name") =~ /server/) then
			data << ""
			data << date
			data << time
			data << groupid
			data << mbean.object_name.get_key_property("Name")
			data << mbean.used_physical_memory
			data << mbean.heap_size_max
			data << mbean.free_physical_memory
			data << mbean.total_garbage_collection_time
			data << mbean.total_garbage_collection_count
			data << mbean.total_nursery_size
			data << mbean.heap_free_percent
			file.puts data.compact.join(", ")
		end
   end
end
 
cmd = 'D:\\wamp\\bin\\mysql\\mysql5.0.51a\\bin\\mysqlimport -h localhost -P 3390 -s -u root --fields-optionally-enclosed-by=""" --fields-terminated-by=, --lines-terminated-by="\n" --local sensis D:\perf_jvm.csv'
puts %x{#{cmd}}
cmd = 'cat D:\perf_jvm.csv >> D:\perf_jvm_archive.csv'
puts %x{#{cmd}}
File.delete 'D:\perf_jvm.csv'
 
 
open( 'D:\perf_queues.csv', 'a') do |file|
   runtime_mbeans = JMX::MBean.find_all_by_name "com.bea:Type=JMSDestinationRuntime,*"
   runtime_mbeans.each do | mbean |
		now  = Time.now
		date = "#{now.year}-#{now.month}-#{now.day}"
		time = "#{now.hour}:#{now.min}:#{now.sec}"
 
		data  = []
		if(mbean.object_name.get_key_property("Name") =~ /Module/) then
			data << ""
			data << date
			data << time
			data << groupid
			data << mbean.object_name.get_key_property("Name")
			data << mbean.messages_received_count
			data << mbean.messages_high_count
			file.puts data.compact.join(", ")
		end
   end
end
 
cmd = 'D:\\wamp\\bin\\mysql\\mysql5.0.51a\\bin\\mysqlimport -h localhost -P 3390 -s -u root --fields-optionally-enclosed-by=""" --fields-terminated-by=, --lines-terminated-by="\n" --local sensis D:\perf_queues.csv'
puts %x{#{cmd}}
cmd = 'cat D:\perf_queues.csv >> D:\perf_queues_archive.csv'
puts %x{#{cmd}}
sleep 10
File.delete 'D:\perf_queues.csv'
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