[jira] [Created] (SOLR-14979) 'nodeName' should be configurable as a startup option/system property

["Chris M. Hostetter (Jira)" <ji...@apache.org>]

Chris M. Hostetter created SOLR-14979:
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             Summary: 'nodeName' should be configurable as a startup option/system property
                 Key: SOLR-14979
                 URL: https://issues.apache.org/jira/browse/SOLR-14979
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Chris M. Hostetter


Currently solr cloud nodes all use a 'nodeName' generated from the hostname + port (+ webapp context) (ie: {{prd-solr-xyz.region-aaa.my-company.com:8983_solr}} and then register their nodeName as an ephemeral zk nodes in {{/live_nodes}}.

I think it would be helpful if nodes could optionally be configured to use an arbitrary (string) node name - w/o any assumptions that it be based on the current host/port -  so that it's possible to shutdown a node and migrate it to a new host and/or port w/o any adverse impacts on other nodes in the cluster, or existing cluster configuration/preferences that might care about nodeNames.

This would not only make it easier to migrate solr nodes between "machines" in cloud environments where hostnames may be based on racks/regions/etc... but it would also make it much easier to deal with stopping/restarting solr nodes in tests - w/o needing brittle code to hope and pray that we can re-use the same port on restart (SOLR-13871)



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