Hi Jan, Your assumptions are correct as those are setup correctly. I will provide the logs.
Meanwhile I can give a try with SOLR 8.11.3 and see how it behaves. Moreover just wanted to check one thing: SOLR 8.11 document says "Solr currently uses Apache ZooKeeper v3.6.2." Setting Up an External ZooKeeper Ensemble | Apache Solr Reference Guide 8.11<https://solr.apache.org/guide/8_11/setting-up-an-external-zookeeper-ensemble.html> However looking at Apache ZooKeeper<https://zookeeper.apache.org/releases.html>, it says "Apache ZooKeeper 3.9.2 is our current release, and 3.8.4 our latest stable release." Hence i wanted to check if i can install zookeeper 3.8.4 along with solr 8.11.3 or i have to use ZooKeeper v3.6.2 only. Thanks Ritesh ________________________________ From: Jan H?ydahl <jan....@cominvent.com> Sent: Wednesday, April 24, 2024 01:41 PM To: users@solr.apache.org <users@solr.apache.org> Subject: [EXTERNAL] Re: SOLR Shard nodes are unhealthy Hi, First, you should use the latest 8.11.3 which has a lot of fixes. Your setup could work if the regions are connected with really low latency and high bandwidth. Your description suggests that your Solr-ZK connection is not as it should. A few assumptions for this to work: * You ave installed ZK correctly as one five-node ensemble, and validated it works flawlessly * All your Solr nodes lists all five ZK nodes in ZK_HOST, e.g. ZK_HOST=zk1:2181,zk2:2182,zk3:2181,zk4:2181,zk5:2181 You'll have to provide more information regarding your exact configuration and/or error log messages to get further on this. Jan > 24. apr. 2024 kl. 04:32 skrev Ritesh Kumar (Accenture International Limite) > <v-kur...@microsoft.com.INVALID>: > > Hello All, > > I have setup SOLR-ZK ensemble (Windows) with 6 SOLR VMs across two regions > and 5 ZK VMs across three regions. > > SOLR Version - 8.11.2 > ZK Version - 3.6.2 > > Region1: > SOLR1 > SOLR2 > SOLR3 > ZK2 > ZK3 > > Region2: > SOLR4 > SOLR5 > SOLR6 > ZK4 > ZK5 > > Region3: > ZK1 > > I am facing issue after restarting ZK and SOLR VMs . The SOLR UI is showing > all the 6 SOLR nodes and 5 ZK nodes are active and with leader. > > All the 3 Solr nodes (1,2,3) of each shard is in recovery and later down and > remaining 3 solr nodes (4,5,6) are healthy. Now if i restart solr nodes 4,5,6 > they go to recovery/down and nodes 1,2,3 become healthy - but all 6 nodes are > never becoming healthy together. I have tried restarting Solr and ZK multiple > times. > > Please let me know if anyone has faced this issue or has suggestions for a > fix. > > > > > Note: I cannot upgrade to latest SOLR version as this is recommened by > Sitecore. > > Thanks > Ritesh
