In order to fix the log4j2 vulnerability, we plan to upgrade the ES version from 6.3.2 to 6.8.22, and 7.x to 7.16.2. When reading the rolling upgrade document, the rolling upgrade document for 7.16.2 mentioned that the plugin needs to be upgraded. version, but within the rolling upgrade documentatio…

Yes, do it before you restart the node Which plugin? Yes, Elasticsearch likely won't start

ES rolling upgrade from 6.3.2 to 6.8.22, ES plug-in version should be upgraded to 6.8.22?

qiuxb (qiuxinbo) July 4, 2022, 7:24am 6

Is it possible to do a pre-check to find out earlier? How can I check that different indexes contain shards of different lucene versions?

Topic		Replies	Views
Elasticsearch version and plugin compatibility Elasticsearch	4	2394	July 5, 2017
Plugin [x-pack-security] is incompatible with version [6.2.4]; was designed for version [6.2.3] Elasticsearch	2	721	May 25, 2018
ES version and phonetic version Elasticsearch	9	737	July 6, 2017
Rolling upgrade from 5.5.2 to 5.6 fails with no plugins installed Elasticsearch	5	472	September 10, 2018
Multiple ES versions in cluster support Elasticsearch	6	5466	July 6, 2017