Elastic Search does not work after upgrade to Server 6.10 from 5.16

[OkyDoky1971]

I have followed link: https://confluence.atlassian.com/bitbucketserverkb/troubleshooting-steps-for-bitbucket-server-code-search-827125334.html

Still cannot find why search doe sot work. 

I also get error in log:

 2020-04-12 13:10:33,161 DEBUG [http-nio-7990-exec-27] admincm @12ICJYFx790x1055493x0 dw0h6p 15.75.96.202 "POST /rest/search/latest/search HTTP/1.1" c.a.b.i.s.search.rest.SearchResource Connection exception: Connection refused
2020-04-12 13:10:33,161 DEBUG [http-nio-7990-exec-27] admincm @12ICJYFx790x1055493x0 dw0h6p 15.75.96.202 "POST /rest/search/latest/search HTTP/1.1" c.atlassian.bitbucket.search.timing Timing: Search request execution took 3.553 ms [3 ms] for query 'XXXX'

[OkyDoky1971 · Accepted solution]

Found soution:

https://confluence.atlassian.com/bitbucketserverkb/bundled-elasticsearch-throws-node-validation-exception-after-bitbucket-upgrade-994321463.html

[Craig Castle-Mead]

Glad you got it sorted and great you posted the answer back to the community so others could benefit.

CCM

[Craig Castle-Mead]

Hi @OkyDoky1971 

What version of Elasticsearch are you on?

2.x was still supported on 5.x but not 6.x

https://confluence.atlassian.com/bitbucketserver0516/supported-platforms-966062089.html

https://confluence.atlassian.com/bitbucketserver0610/supported-platforms-989762041.html

CCM

[Craig Castle-Mead]

Actually, that error saying connection refused may mean that your elasticsearch service didn’t start correctly. Are you using the bundled elasticsearch or running your own?

CCM

[OkyDoky1971]

Bundled