On Fri, Dec 17, 2010 at 5:48 AM, Daniel Doubleday <daniel.double...@gmx.net> wrote: > Hi all > just wanted to share a simple way we use to monitor cassandra internals with > zabbix. > We use a minimal http server which reads jmx and shows returns them in a > property form. Thats read by zabbix every 30secs. > That's started together with cassandra: > https://gist.github.com/744761 > Output looks something like: > d...@caladan[~]$ curl http://b22:9090/jmxexport > OperationMode=Normal > Load=151.379 > ReadOperations=506334 > WriteOperations=865867 > TotalReadLatencyMicros=6663882635 > TotalWriteLatencyMicros=352292885 > BytesCompacted=0 > BytesTotalInProgress=0 > PendingTasks=0 > HeapUsed=1153810280 > How / what are you monitoring? Best practices someone? > Cheers, > Daniel Doubleday, > smeet.com, Berlin
Using cacti and - > http://www.jointhegrid.com/cassandra/cassandra-cacti-m6.jsp Many people are using munin good support there. Best Bractices: Monitor SSTable sizes and growth. Monitor Reads/Write sec Monitor Cache hit rate Monitor Compactions (what % of the day and average node is compacting) Monitor SSTable count (make sure you do not have to many) Monitor IO wait. (make sure you are not disk bound) Monitor JVM memory (make sure you have some overhead for bursts of traffic)
