Change Details

See T291654 for dc-ops procurement, T294154 for dc-ops racking. This ticket is to track the search team's part: taking the fresh nodes and bringing them properly into service. **Step 1**: Set up hieradata [] allocate between psi/omega, keeping rows as balanced as possible **Step 2**: Enable cirrus roles - after completion of this step, the new hosts should have joined the cirrus elasticsearch clusters **Step 3**: Prepare to decom old hosts [] set new master configuration - https://phabricator.wikimedia.org/T294805#7473840 [] manually ban from cluster [] set new replication master seeds (if masters changed) https://phabricator.wikimedia.org/T294805#7701855 **Step 4**: Actually decom hosts (`elastic20[25-36]`) [] remove cirrus role and run decom cookbooks; then open decom tickets for dc-op

(`elastic20[61-72]`) See T291654 for procurement, T294154 for racking. These 12 refresh hosts are replacing `elastic20[25-36]`. (`elastic20[73-86]`) See T299608 for procurement, T299608 for racking. These are 14 new expansion hosts. **Step 1**: Set up hieradata [] allocate between psi/omega, keeping rows as balanced as possible **Step 2**: Enable cirrus roles - after completion of this step, the new hosts should have joined the cirrus elasticsearch clusters **Step 3**: Prepare to decom old hosts [] set new master configuration - https://phabricator.wikimedia.org/T294805#7473840 [] manually ban from cluster [] set new replication master seeds (if masters changed) https://phabricator.wikimedia.org/T294805#7701855 **Step 4**: Actually decom hosts (`elastic20[25-36]`) [] remove cirrus role and run decom cookbooks; then open decom tickets for dc-op

See T291654 for dc-ops(`elastic20[61-72]`) See T291654 for procurement, T294154 for racking. These 12 refresh hosts are replacing `elastic20[25-36]`. (`elastic20[73-86]`) See T299608 for procurement, T294154T299608 for dc-ops racking. This ticket is to track the search team's part: taking the fresh nodes and bringing them properly into serviceThese are 14 new expansion hosts. **Step 1**: Set up hieradata [] allocate between psi/omega, keeping rows as balanced as possible **Step 2**: Enable cirrus roles - after completion of this step, the new hosts should have joined the cirrus elasticsearch clusters **Step 3**: Prepare to decom old hosts [] set new master configuration - https://phabricator.wikimedia.org/T294805#7473840 [] manually ban from cluster [] set new replication master seeds (if masters changed) https://phabricator.wikimedia.org/T294805#7701855 **Step 4**: Actually decom hosts (`elastic20[25-36]`) [] remove cirrus role and run decom cookbooks; then open decom tickets for dc-op