Hi Vanessa, Riak is definitely meant to run behind a load balancer. (Or, at the worst case, to be load-balanced on the client side. That is, all clients connect to all 4 nodes).
When you say "we did try putting all 4 Riak nodes behind a load-balancer and pointing the clients at it, but it didn't help." -- what do you mean exactly, by "it didn't help"? What happened when you tried using the load balancer? On Wed, Oct 7, 2015 at 1:57 PM, Vanessa Williams < vanessa.willi...@thoughtwire.ca> wrote: > Hi all, we are still (for a while longer) using Riak 1.4 and the matching > Java client. The client(s) connect to one node in the cluster (since that's > all it can do in this client version). The cluster itself has 4 nodes > (sorry, we can't use 5 in this scenario). There are 2 separate clients. > > We've tried both n_val = 3 and n_val=4. We achieve consistency-by-writes > by setting w=all. Therefore, we only require one successful read (r=1). > > When all nodes are up, everything is fine. If one node fails, the clients > can no longer read any keys at all. There's an exception like this: > > com.basho.riak.client.RiakRetryFailedException: > java.net.ConnectException: Connection refused > > Now, it isn't possible that Riak can't operate when one node fails, so > we're clearly missing something here. > > Note: we did try putting all 4 Riak nodes behind a load-balancer and > pointing the clients at it, but it didn't help. > > Riak is a high-availability key-value store, so... why are we failing to > achieve high-availability? Any suggestions greatly appreciated, and if more > info is required I'll do my best to provide it. > > Thanks in advance, > Vanessa > > -- > Vanessa Williams > ThoughtWire Corporation > http://www.thoughtwire.com > > > _______________________________________________ > riak-users mailing list > riak-users@lists.basho.com > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > >
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