Hi Particia, Thank you for the feedback. It has been helpful.
On Tue, Aug 27, 2013 at 12:02 AM, Patricia Gorla <gorla.patri...@gmail.com>wrote: > Anthony, > > We use a number of tools to manage our Cassandra cluster. > > * Datastax OpsCenter [0] for at a glance information, and trending > statistics. You can also run operations through here, though I prefer > to use nodetool for any mutative operation. > * nodetool for ad hoc status checks, and day-to-day node management. > * puppet for setup and initialization > > > For example, if I want to make some changes to the configuration file > that resides on each node, is there a tool that will propagate the change > to each node? > > For this, we use puppet to manage any changes to the configurations > (which are stored in git). We initially had Cassandra auto-restart > when the configuration changed, but you might not want the node to > automatically join a cluster, so we turned this off. > Puppet was the first thing that came to mind for us as well. In addition, we had the same thought about auto-restarting nodes when the configuration is changed. If a configuration on all the nodes is changed, we would want to restart one node at a time and wait for it to rejoin before restarting the next one. I am assuming in a case like this, you then manually perform the restart operation for each node? > > > Another example is if I want to have a rolling repair (nodetool repair > -pr) and clean up running on my cluster, is there a tool that will help > manage/configure that? > > Multiple commands to the cluster are sent via clusterssh [1] (cssh for > OS X). I can easily choose which nodes to control, and run those in > sync. For any rolling procedures, we send commands one at a time, > though we've considered sending some of these tasks to cron. > Thanks again for the tip! This is quite interesting; it may help to solve our immediate problem for now. Regards, Anthony > > Hope this helps. > > Cheers, > Patricia > > > [0] http://planetcassandra.org/Download/DataStaxCommunityEdition > [1] http://sourceforge.net/projects/clusterssh/ >
