The RESTBase cluster uses an array mounted as /srv/cassandra/instance-data to store hints, caches, and commitlogs. Under aberrant conditions these arrays can fill up and take down all of the hosts' configured instances. The standard utilization threshold is 90%; We should consider a lower threshold to provide more advance notice of impending issues.
Related Gerrit Patches:
|operations/puppet : production||restbase: cleanup remaining detritus from storage transition|
|operations/puppet : production||WIP: restbase: use lower threshold when monitoring instance-data partition|