https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/CONTROLLER-1854 controller <p>Today shard leadership changes have impact on services and too many shard leadership changes in a short duration are sign of unhealthy cluster. We need some means to track and detect frequency of shard leadership changes. For this we want some metrics/counters exposed by Controller.</p> CONTROLLER-1854

Metrics/counters for shard leadership changes

Improvement Medium Resolved Done Tom Pantelis Vishal Thapar Mon, 23 Jul 2018 15:34:24 +0000 Fri, 5 Oct 2018 15:18:17 +0000 Fri, 5 Oct 2018 15:18:17 +0000 clustering 0 3 <p><a href="https://jira.opendaylight.org/secure/ViewProfile.jspa?name=tpantelis" class="user-hover" rel="tpantelis">tpantelis</a> on <a href="https://lists.opendaylight.org/pipermail/controller-dev/2018-July/014543.html" class="external-link" target="_blank" rel="nofollow noopener">https://lists.opendaylight.org/pipermail/controller-dev/2018-July/014543.html</a> said:</p> <p><em>"ShardStatsMXBean already has getLeadershipChangeCount and getLastLeadershipChangeTime."</em></p> <p><a href="https://jira.opendaylight.org/secure/ViewProfile.jspa?name=thapar" class="user-hover" rel="thapar">thapar</a> so we can just read that (via Jolokia's URL) ... close this (controller) issue?</p> <p>Yep. Will get started on changes to use this in ODLTools.</p> <p>Yep. Will get started on changes to use this in ODLTools.</p> <p>The curl command which we use for this is </p> <p><font color="#000000">curl --silent -u admin:admin <a href="http://localhost:8181/jolokia/read/org.opendaylight.controller:type=DistributedConfigDatastore,Category=Shards,name=member-1-shard-inventory-config/LeadershipChangeCount" class="external-link" target="_blank" rel="nofollow noopener">http://localhost:8181/jolokia/read/org.opendaylight.controller:type=DistributedConfigDatastore,Category=Shards,name=member-1-shard-inventory-config/LeadershipChangeCount</a></font></p> <p><font color="#000000">wherein we can replace the shard-name with all interested shards. </font></p> <p><font color="#000000">I assume that the monitoring tools sit external to ODL and runs in a cron. Actually, that's how we use it</font></p> Development Epic Link NETVIRT-996 Rank 0|i03gz3: