Unfortunately not, as the nagios JMX check expects a numeric return value and only allows for defining thresholds for issuing warnings or errors depending on that value. It does not allow for post processing the return values.
roland Von: Aaron Morton [mailto:aa...@thelastpickle.com] Gesendet: Dienstag, 8. Februar 2011 21:32 An: dev@cassandra.apache.org Betreff: Re: Monitoring Cluster with JMX Can't you get the length of the list on the monitoring side of things ? aaron On 08 Feb, 2011,at 10:25 PM, Roland Gude <roland.g...@yoochoose.com> wrote: Hello, we are trying to monitor our cassandra cluster with Nagios JMX checks. While there are JMX attributes which expose the list of reachable/unreachable hosts, it would be very helpful to have additional numeric attributes exposing the size of these lists. This could be used to set thresholds (in Nagios monitoring) i.e. at least 3 hosts must be reachable before Nagios issues a warning. This is probably not hard to do and we are willing to implement/supply patches if someone could point us in the right direction on where to implement it. Greetings, roland -- YOOCHOOSE GmbH Roland Gude Software Engineer Im Mediapark 8, 50670 Köln +49 221 4544151 (Tel) +49 221 4544159 (Fax) +49 171 7894057 (Mobil) Email: roland.g...@yoochoose.com<mailto:roland.g...@yoochoose.com> WWW: www.yoochoose.com<http://www.yoochoose.com/<http://www.yoochoose.com%3chttp:/www.yoochoose.com/>> YOOCHOOSE GmbH Geschäftsführer: Dr. Uwe Alkemper, Michael Friedmann Handelsregister: Amtsgericht Köln HRB 65275 Ust-Ident-Nr: DE 264 773 520 Sitz der Gesellschaft: Köln
