we are using elasticserach v2.1.0 on production server(centos 7, 64bit).
we need to upgrade to v5.2.2.
i don't see any upgrade scripts from elasticsearch website or other sources.
i have followed ElasticSearch Upgrade documentation:
i stuck on upgrade_note section
i don't see much details about 'Section: 3 Stop and upgrade a single node"
i am getting few exception while installing 'rpm -ivh v5.2.2' on elasticsearch box(v2.1.0 running)
can you please help/share upgrade process steps/script if available.