adjust retention time for carbon and resize whisper files

some graphite storage-schema.conf examples out there only retain data for 1 day.


[default_1min_for_1day]
pattern = .*
retentions = 60s:1d

this comes as a surprise later when you go back to look at your data and its not there...its been rotated out by carbon due to the geometry of the whisper file. the whisper file has a finite size...ya dig?

Update the retention rule in /opt/graphite/conf/storage-schemas.conf


[default_1min_for_1year]
pattern = .*
retentions = 60s:525600

#adjust existing whisper files

find /opt/graphite/storage/whisper -type f -name "*.wsp" | xargs -I{} whisper-resize.py {} 60:5256000

#restart carbon

/usr/bin/python /opt/graphite/bin/carbon-cache.py --config=/opt/graphite/conf/carbon.conf start


root@nagios4.sv3:~$ ls -la /opt/graphite/storage/whisper/prod/web1/apache/
total 43272
drwxr-xr-x 3 root root    4096 Mar 11 20:15 .
drwxr-xr-x 9 root root    4096 Feb 25 05:19 ..
-rw-r--r-- 1 root root 6307228 Mar 11 20:34 busy_workers.wsp
-rwxr-xr-x 1 root root   17308 Mar 11 20:15 busy_workers.wsp.bak

the old file is there, thats how big a file is that keeps data for a single day at 1min interval.

the other file represents a year at 1min interval. makes it easy to do capacity planning for monitoring.

find /opt/graphite/storage/whisper -type f -name "*.wsp.bak" | xargs -I{} rm -f {}