Hi Nigel, I'm using Casssandra 2.0.7 and in Cassandra lib directory, I'm dropping in this reporter jar:
http://search.maven.org/#artifactdetails|com.yammer.metrics|metrics-graphite|2.2.0|jar My cass metrics are flowing in properly into Graphite 0.9.10. Here's my metrics yaml: graphite: - period: 10 timeunit: 'SECONDS' hosts: - host: <%= @graphite_ip %> port: 2003 predicate: color: "white" useQualifiedName: true patterns: - "^org.apache.cassandra.metrics.Cache.+" - "^org.apache.cassandra.metrics.ClientRequest.+" - "^org.apache.cassandra.metrics.Storage.+" - "^org.apache.cassandra.metrics.ThreadPools.+" prefix: "servers.<%= hostname %>" HTH, -Dennis On Wed, Dec 17, 2014 at 9:16 AM, Karl Rieb <karl.r...@gmail.com> wrote: > > This seemed to be due to a bug with how metric names are converted to file > system paths. os.path.join() is used, but the metric path converts into an > absolute path (e.g /org/apache/cassandra). This means you end up doing > something like: > > os.path.join('/opt/graphite/storage/whatever', '/org/apache/cassandra/etc') > > the metric name gets converted to a path by replacing all dots with > slashes. I just manually tweaked the Python code to strip any leading dots > from the metric name as a temporary workaround. > > -Karl > > > > > On Dec 17, 2014, at 11:04 AM, Nigel LEACH <nigel.le...@uk.bnpparibas.com> > wrote: > > > > I'm running Cassandra Cassandra 2.0.11.83 (via DSE 4.6.0), and Graphite > 0.9.10. I know a bit about Cassandra, but not much about Graphite. > > > > Our Graphite server exposes system metrics, and also those from the > example python scripts, successfully. > > > > I can see Cassandra metrics hitting the Graphite server, but in the > console log, errors suggest they are attempting to load in to the root file > system > > > > exceptions.IOError: [Errno 2] No such file or directory: > '/org/apache/cassandra/metrics/ColumnFamily/system/sstable_activity/WriteTotalLatency/count.wsp' > > > > Whereas, I think, it should be going to something like this > > > > > /var/lib/carbon/whisper/carbon/agents/org/apache/cassandra/metrics/ColumnFamily/system/sstable_activity/WriteTotalLatency/count.wsp' > > > > I'm losing the prefix directory path somewhere, but don't know where to > configure it. > > > > On the Cassandra side all I have added is a call to > metricsGraphite.yaml, which contains > > > > graphite: > > - > > period: 60 > > timeunit: 'SECONDS' > > hosts: > > - host: '10.11.12.13' > > port: 2003 > > predicate: > > color: "white" > > useQualifiedName: true > > patterns: > > - "^org.apache.cassandra.metrics.+" > > > > On the Graphite side I simply have the following in Carbons' > storage-schemas.conf file > > > > [cassandra] > > pattern=cassandra > > retentions = 60:90d > > > > Any hints to what is going wrong? > > > > Many Thanks > > Nigel > > > > > > ___________________________________________________________ > > This e-mail may contain confidential and/or privileged information. If > you are not the intended recipient (or have received this e-mail in error) > please notify the sender immediately and delete this e-mail. Any > unauthorised copying, disclosure or distribution of the material in this > e-mail is prohibited. > > > > Please refer to http://www.bnpparibas.co.uk/en/email-disclaimer/ for > additional disclosures. > > >
