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puppetize turning off reserved space for cassandra /srv
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Description

Some of the machines in the RESTBase Cassandra cluster have had the reserved space disabled (set to 0) on the volume where Cassandra storage happens, others have the standard 5%, which on a ~5T volume amounts to ~231G. Since Cassandra is the only thing using these volumes, it would seem sensible to remove the reserved space, and to make this a standard (and documented) part of the configuration. I'd be interested to hear if there are any objections from Ops on the former, as well as any suggestions about how best to do the latter (Puppet?).

Event Timeline

Eevans created this task.Apr 13 2016, 9:29 PM
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Eevans triaged this task as Low priority.Apr 13 2016, 9:29 PM

FTR it was agreed to puppetize tune2fs to set /srv reserved space to zero

fgiunchedi renamed this task from Filesystem reserved space? to puppetize turning off reserved space for cassandra /srv.Apr 29 2016, 8:33 AM

@fgiunchedi, has this already happened?

GWicke moved this task from Backlog to watching on the Services board.Jul 11 2017, 7:54 PM
GWicke edited projects, added Services (watching); removed Services.

@Eevans @fgiunchedi should we go ahead with this?

@Eevans @fgiunchedi should we go ahead with this?

I don't think there was ever any controversy over whether we should do this. AFAIK, it didn't happen because it wasn't obvious (to me at least) how, and because of a general lack of time (or relative priority, etc).

@Eevans @fgiunchedi should we go ahead with this?

I don't think there was ever any controversy over whether we should do this. AFAIK, it didn't happen because it wasn't obvious (to me at least) how, and because of a general lack of time (or relative priority, etc).

Indeed this has never been prioritized, partly for lack of time too.