Elasticsearch is working But getting error via index.php?search/search "The search could not be completed. Please try again later."
Does Elasticsearch work with ConfigServer Security & Firewall? On my hand Elasticsearch work if Disabled ConfigServer Security & Firewall but i Allow incoming TCP ports 9200,9300 but still are not work.The Elastic Search log will be the best thing to check in the first instance.
I think i have fixed this issue to adding in csf.pignore for Suspicious process running. now i am getting Suspicious File Alert via email.That would be down to your sysadmin to locate. However I know of many boards using CSF and ES without issue.