I use nagios + nrpe + some custom scripts to monitor our cassandra/hadoop nodes. Given our long time comfortability with nagios, i didn't find any major gotchas .. regards ranjib
On Mon, Sep 13, 2010 at 2:10 AM, Aaron Morton <aa...@thelastpickle.com>wrote: > This is my first encounter with cacti, and it's feels a lot like having a > cactus violently inserted in me :) Hopefully this week I can get back to it > with a clearer head, part of my annoyance was probably trying to rush it > through on a Friday and it's somewhat taxing configuration. > > Over the weekend I was thinking about going with some python (our in > house favorite) in front of the jmxterm jar. > > I'll also try to learn a bit more about cacti, it cannot be as hard as it > seemed on Friday. > > I'll email you out of the list this week if I make some progress. > > Aaron > > > On 11 Sep, 2010,at 03:31 PM, Edward Capriolo <edlinuxg...@gmail.com> > wrote: > > On Fri, Sep 10, 2010 at 7:29 PM, aaron morton <aa...@thelastpickle.com> > wrote: > > Am going through the rather painful process of trying to monitor > cassandra using Cacti (it's what we use at work). At the moment it feels > like a losing battle :) > > > > Does anyone know of some cacti resources for monitoring the JVM or > Cassandra metrics other than... > > > > mysql-cacti-templates > > http://code.google.com/p/mysql-cacti-templates/ > > - provides templates and data sources that require ssh and can monitor > JVM heap and a few things. > > > > Cassandra-cacti-m6 > > http://www.jointhegrid.com/cassandra/cassandra-cacti-m6.jsp > > Coded for version 0.6* , have made some changes to stop it looking for > stats that no longer exist. Missing some metrics I think but it's probably > the best bet so far. If I get it working I'll contribute it back to them > Most of the problems were probably down the how much effort it takes to > setup cacti. > > > > jmxterm > > http://www.cyclopsgroup.org/projects/jmxterm/ > > Allows for command line access to JMX. I started down the path of writing > a cacti data source to use this just to see how it worked. Looks like a lot > of work. > > > > Thanks for any advice. > > Aaron > > > > > > Setting up cacti is easy, the second time, and third time :) > As for cassandra-cacti-m6 (i am the author). Unfortunately, I have > been fighting the jmx switcharo battle for about 3 years now > hadoop/hbase/cassandra/hornetq/vserver > > In a nutshell there is ALWAYS work involved. First, is because as you > noticed attributes change/remove/add/renamed. Second it takes a human > to logically group things together. For example, if you have two items > "cache hits" and "cache misses". You really do not want two separate > graphs that will scale independently. You want one slick stack graph, > with nice colors, and you want a CDEF to calculate the cache hit > percentage by dividing one into the other and show that at the bottom. > > If you want to have a 7.0 branch to cassandra-cacti-m6 I would love > the help. We are not on 7.0 yet so I have not had the time just to go > out and make graphs for a version we are not using yet :) but if you > come up with patches they are happily accepted. > > Edward > >
