8 Replies Latest reply: Jun 8, 2015 3:26 AM by Peter Cammaert RSS

    one server down in cluster

      we have two nodes clustered into one prod server one of them is down and we don't have tasks created in 2nd node

      does any one know how do I access the nodes so that I can enable the failed node

        • Re: one server down in cluster
          Peter Turner

          Hi Asha,

           

          You say two nodes clustered, are these two QVS nodes? also do you have QlikView publisher?

          The reloads are run from the QlikView Distribution Service QDS and the QlikView Management Service QMS tells it what todo. Its possible to cluster the QDS service also, but this doesn't sound like your deployment.

           

          If a service/node is down try restarting it, and checking the QlikView and windows logs for a reason.

            • Re: one server down in cluster
              Peter Cammaert

              Peter,

               

              Just a guess: no publisher probably means that both cluster nodes have entirely separate reload definitions. Worst case, this environment has reload tasks scheduled only on the node that is currently down. There is no real solution to this situation I think, except - as you pointed out - getting the inactive node back up again as soon as possible.

               

              Correct?

               

              Peter.

            • Re: one server down in cluster

              Hi Peter Turner/Peter Cammaert,

               

              We do have publisher.

               

              Yes ,reload tasks were scheduled only on the node that went down. our server administrator was able to bring this up and running yesterday. But wondering what would be best approach to avoid this in future.Do we need to create tasks in two servers?

               

              Thanks

              Asha

                • Re: one server down in cluster
                  Peter Cammaert

                  The best solution in your case is what peter.T already hinted at: move your publisher away from both QVS machines (if you don't have a publisher cluster license, only one of the publisher installations can be active anyway) to a separate server and go for a three-platform approach. Many performance issues in an enterprise environment are caused by running a publisher and a QVS on the same platform.

                   

                  For a good explanation of reasons and advantages, see chapter 17 Clustering QlikView Servers in the Server Reference Manual.

                   

                  Best,

                   

                  Peter

                    • Re: one server down in cluster

                      Hi Peter,

                       

                      How do I find if we have publisher cluster license, is there any way to find or do I need to contact Qlik for this.

                       

                      Thanks

                      Asha

                        • Re: one server down in cluster
                          Peter Cammaert

                          Check your Publisher LEF file (in QMC or on disk in C:\ProgramData\QlikTech\ManagementService\Publisher LEF\). If it contains an entry called NUMBER_OF_NS with a number greater than 1, you have a Clustered Publisher license. The number indicates the maximum number of Publisher nodes in your cluster.

                          If this entry is missing, then you can install only one Publisher with this license.

                           

                          The Server Reference Manual contains a lot of information on this subject. See Chapter 18 Clustering QlikView Publisher

                           

                          Best,

                           

                          Peter