>> Where can I find this "srsr" command? It is actually the 4 letter command - "srvr". You can run it like any other 4 letter zk command -
echo srvr | nc zk-server zk-port Thanks, Neha On Tue, Dec 6, 2011 at 1:26 PM, Florian Leibert <[email protected]> wrote: > Where can I find this "srsr" command? It's not part of the zkCli syntax nor > can I find a reference to it... > > Thanks, > Florian > > On Tue, Dec 6, 2011 at 11:51 AM, Neha Narkhede <[email protected] > >wrote: > > > >> I was wondering if there was an easy way to check if a given zookeeper > > server has joined an ensemble successfully and how many nodes of the > > ensemble are alive. > > > > Today, we do this by relying on the Mode reported by the srvr command. If > > the value is anything other than leader/follower, it is not participating > > in the quorum. > > We simply count the total of leader/follower nodes and ensure that they > are > > higher than a threshold. > > > > The downside of this approach is having to run srvr periodically. > > > > Thanks, > > Neha > > > > On Tue, Dec 6, 2011 at 11:44 AM, Florian Leibert <[email protected]> wrote: > > > > > Thanks - though I'll have to have knowledge of the other servers and > have > > > to maintain yet another copy of the server-addresses - I wanted to use > it > > > within monit to determine if the server is functioning correctly - > while > > I > > > of course have to always change the zoo.cnf in case of topology > changes, > > I > > > now also have to update my monit scripts to add/remove any servers to > use > > > with the smoketest. > > > > > > Too bad ZK doesn't expose via the API a get_ensemble_size ~ that would > > > allow me to alert in case the ensemble is less than X... > > > > > > But this helps! > > > > > > Thanks! > > > > > > On Tue, Dec 6, 2011 at 11:39 AM, Patrick Hunt <[email protected]> > wrote: > > > > > > > I created the zk-smoketest project explicitly to help ops with this > > > > problem: > > > > https://github.com/phunt/zk-smoketest > > > > > > > > Patrick > > > > > > > > On Tue, Dec 6, 2011 at 9:39 AM, Florian Leibert <[email protected]> > > wrote: > > > > > Hi - > > > > > I was wondering if there was an easy way to check if a given > > zookeeper > > > > > server has joined an ensemble successfully and how many nodes of > the > > > > > ensemble are alive. Of course I could create a test-node on one of > > the > > > > > servers and check the existence on the other ones but wanted to > check > > > > first > > > > > if there was another way. > > > > > > > > > > I looked at the client bindings in the python project as well as > the > > > ones > > > > > in the ruby project but didn't see that there really was one. I > > > > > specifically want to ensure that the servers are communicating with > > > each > > > > > other and not form "separate" ensembles. > > > > > > > > > > Thanks, > > > > > Florian > > > > > > > > > > > > > > > > -- > > > Best regards, > > > > > > Florian > > > http://twitter.com/flo <http://twitter.com/floleibert> > > > http://flori.posterous.com/ > > > > > > > > > -- > Best regards, > > Florian > http://twitter.com/flo <http://twitter.com/floleibert> > http://flori.posterous.com/ >
