topic Migrate Index Cluster to New Hardware in Splunk Enterprise https://community.splunk.com/t5/Splunk-Enterprise/Migrate-Index-Cluster-to-New-Hardware/m-p/556662#M6207 <P><STRONG>Can I have an Index Cluster runnning on both RHEL 7 and RHEL 8?</STRONG></P><P>We are looking to migrate our Splunk estate from RHEL 7 over to RHEL 8. As we have an existing Index Cluster, the plan is</P><UL><LI>Start - RHEL 7 Index Cluster</LI><LI>Build the new RHEL 8 Indexers</LI><LI>put the cluster into maintenance mode</LI><LI>add RHEL 8 indexers into the existing RHEL 7 Index Cluster</LI><LI>disable maintenance mode</LI><LI>re-balance data accros the RHEL 7 / 8 cluster</LI><LI>splunk offline --enforce-counts on RHEL 7 indexer(s) to be removed</LI><LI>End - RHEL 8 Index Cluster</LI></UL> Tue, 22 Jun 2021 11:12:04 GMT boz_8058 2021-06-22T11:12:04Z Migrate Index Cluster to New Hardware https://community.splunk.com/t5/Splunk-Enterprise/Migrate-Index-Cluster-to-New-Hardware/m-p/556662#M6207 <P><STRONG>Can I have an Index Cluster runnning on both RHEL 7 and RHEL 8?</STRONG></P><P>We are looking to migrate our Splunk estate from RHEL 7 over to RHEL 8. As we have an existing Index Cluster, the plan is</P><UL><LI>Start - RHEL 7 Index Cluster</LI><LI>Build the new RHEL 8 Indexers</LI><LI>put the cluster into maintenance mode</LI><LI>add RHEL 8 indexers into the existing RHEL 7 Index Cluster</LI><LI>disable maintenance mode</LI><LI>re-balance data accros the RHEL 7 / 8 cluster</LI><LI>splunk offline --enforce-counts on RHEL 7 indexer(s) to be removed</LI><LI>End - RHEL 8 Index Cluster</LI></UL> Tue, 22 Jun 2021 11:12:04 GMT https://community.splunk.com/t5/Splunk-Enterprise/Migrate-Index-Cluster-to-New-Hardware/m-p/556662#M6207 boz_8058 2021-06-22T11:12:04Z Re: Migrate Index Cluster to New Hardware https://community.splunk.com/t5/Splunk-Enterprise/Migrate-Index-Cluster-to-New-Hardware/m-p/556674#M6209 <P>Running RHEL7 and RHEL8 should be fine as long as both run the same version of Splunk.</P><P>Your steps are good with a few changes: don't bother with maintenance mode and don't waste time with rebalance.&nbsp; The off-line step will rebalance the data, anyway.&nbsp; Be sure to off-line one indexer at a time.</P> Tue, 22 Jun 2021 12:19:22 GMT https://community.splunk.com/t5/Splunk-Enterprise/Migrate-Index-Cluster-to-New-Hardware/m-p/556674#M6209 richgalloway 2021-06-22T12:19:22Z