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896 bytes added ,  21:00, 5 September 2020
→‎Upgrading: notes on upgrading
==Upgrading==
Old versions of Meza run the legacy REL1_27 release of QualityBox 34 runs MediaWiki, while the "beta" Meza runs REL1_281.34. Our goal should be to run "stable" REL1_29 asapx and Elasticsearch 6.x
The best way to upgrade to QB 34 from QB 32.x (ES 5.x) is to [https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/CirrusSearch/+/HEAD/README blow away the index and start over].
 
* DO NOT follow the [https://www.elastic.co/guide/en/elastic-stack/6.8/upgrading-elastic-stack.html upgrade instructions]. Migration Assistant does not work for 5.6 in testing.
* DO NOT prepare a 32.x host by [https://www.elastic.co/guide/en/elasticsearch/reference/5.6/installing-xpack-es.html installing X-Pack] and preparing the indexes using the Migration Assistant. [https://github.com/elastic/elasticsearch/issues/30085#issuecomment-685286211 It does not work!]. And you'll avoid the hassle of registering for a (free) limited license. Plus the hassle of installing and upgrading Kibana just to get the Migration Assistant.
* [https://www.elastic.co/guide/en/elasticsearch/reference/6.0/breaking_60_indices_changes.html Breaking changes in 6.x] are taken care of by the Elastica Extension
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