I am trying to upgrade solr cloud from version 8.11.1 to 9.4.0. Solr service started but connection is getting refused. See the below error in the solr.log. Any pointers.
ERROR (updateExecutor-8-thread-2-processing-hostname:8988_solr rc2_addresses_shard1_replica_n1 rc2_addresses shard1 core_node3) [rc2_addresses shard1 core_node3 rc2_addresses_shard1_replica_n1] o.a.s.c.SyncStrategy http://hostname:8988/solr/rc2_addresses_shard1_replica_n1/: Could not tell a replica to recover => org.apache.solr.client.solrj.SolrServerException: Server refused connection at: http://hostname:8988/solr About to connect() to hostname port 8988 (#0) * Trying * Connection refused * Failed connect to hostname:8988; Connection refused * Closing connection 0 (edited) -- Ramesh -- The information contained in this email message and its attachments is intended only for the private and confidential use of the recipient(s) named above, unless the sender expressly agrees otherwise. Transmission of email over the Internet is not a secure communications medium. If you are requesting or have requested the transmittal of personal data, as defined in applicable privacy laws by means of email or in an attachment to email, you must select a more secure alternate means of transmittal that supports your obligations to protect such personal data. If the reader of this message is not the intended recipient and/or you have received this email in error, you must take no action based on the information in this email and you are hereby notified that any dissemination, misuse or copying or disclosure of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by email and delete the original message.
