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Question by Dean, Dec 16, 2016 4:36 AM

CesUnavailableException on Mirror


I have configured one mirror on a master Coveo server and everything is showing green in the Mirrors page of the Coveo Admin page. My problem is, if I configure one of the Sitecore sites (CD) to use just the Mirror, I get the CESUnavailable error.

I couldn't figure out what is still missing. I've checked the configs and they seem to be in order,. Ports are open (52810 and 8080). If I switch the config to use the Master, everything works.


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Answer by Dominic Berube, Dec 16, 2016 9:19 AM

Hi Dean,

CDs are not supposed to communicate direct with CES (via the AdminService), only with the SearchAPI. Have you enabled the SwitchMasterToWeb.Coveo.config file and set the Skip settings on your CDs?

Make sure you follow the Scaling Guide for Coveo for Sitecore 3.0 or Coveo for Sitecore 4.0

Best regards,


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Comment by Dean, Dec 17, 2016 8:16 PM

hi, thanks, yes, I actually followed it, it seems I missed one config to disable. All good now.

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