Thanks very much Jonathan !!
On Wed, Dec 10, 2014 at 1:00 PM, Jonathan Haddad <j...@jonhaddad.com> wrote: > > I did a presentation on diagnosing performance problems in production at > the US & Euro summits, in which I covered quite a few tools & preventative > measures you should know when running a production cluster. You may find > it useful: > http://rustyrazorblade.com/2014/09/cassandra-summit-recap-diagnosing-problems-in-production/ > > On ops center - I recommend it. It gives you a nice dashboard. I don't > think it's completely comprehensive (but no tool really is) but it gets you > 90% of the way there. > > It's a good idea to run repairs, especially if you're doing deletes or > querying at CL=ONE. I assume you're not using quorum, because on RF=2 > that's the same as CL=ALL. > > I recommend at least RF=3 because if you lose 1 server, you're on the edge > of data loss. > > > On Tue Dec 09 2014 at 7:19:32 PM Neha Trivedi <nehajtriv...@gmail.com> > wrote: > >> Hi, >> We have Two Node Cluster Configuration in production with RF=2. >> >> Which means that the data is written in both the clusters and it's >> running for about a month now and has good amount of data. >> >> Questions? >> 1. What are the best practices for maintenance? >> 2. Is OPScenter required to be installed or I can manage with nodetool >> utility? >> 3. Is is necessary to run repair weekly? >> >> thanks >> regards >> Neha >> >
