INTRODUCTION

I am running a 3 server farm environment: 1 Central Admin (CA) and 2 Web Front Ends (WFE). I set the following search components on each of the VMs:
– CA: Admin, crawler, content processing, analytics processing, query processing, index partition
– WFE 1: content processing, analytics processing, query processing, index partition
– WFE 2: content processing, analytics processing, query processing, index partition

I only use CA to do the crawling so that WFE performance is not affected when crawler runs.

Upon maintaining my SharePoint farm, on the Search Service Application administration page I saw some error (red cross) and warning (yellow triangle) icons under these components on both WFEs: content processing, analytics processing, query processing, index partition.

The cause of the issue is unclear.

RESOLUTION

To fix the issue, I ran the following Powershell script:

$svr = Get-SPEnterpriseSearchServiceInstance -Identity "SERVERNAME"
Start-SPEnterpriseSearchServiceInstance -Identity $svr

Then I run Full Crawl.

Status is all now healthy (green tick) for all those offline components.

NOTE: After running the Powershell script above you may see the other components turn green except Index Partition. It is still in “Warning” mode. Only until Full Crawl is run did it turn back to green.

Hope this helps,

Tommy