I am facing issue while this unconventional issue in the Sitecore Solr Master Slave configuration.

Below are the details.

Sitecore Version: Sitecore 8.2 Update 6

Solr Version: 6.4.0 (We are using this as previous vendor used this)

Hosting Platform: These all are in-premise VM's

  1. I have Master Slave Configuration for Solr to be in use for Sitecore.
  2. I have a Slave server pointed in CD and Master in CM.
  3. Our Site is working absolutely fine.
  4. But still, we are getting below error printed in Log files.
> 7860 09:46:24 Unable to connect to [http://slavesolrdomain:port/solr], Core: [sitecore_web_index] in Master Slave Solr Configuration
Exception: SolrNet.Exceptions.SolrConnectionException

4040org.apache.solr.common.SolrExceptionorg.apache.solr.common.SolrExceptionCan not find: schema.xml [C:\solr\server\solr\sitecore_web_index\conf\schema.xml]404

> Source: SolrNet
   at SolrNet.Impl.SolrConnection.Get(String relativeUrl, IEnumerable`1 parameters)
   at SolrNet.Impl.SolrBasicServer`1.GetSchema()
   at Sitecore.ContentSearch.SolrProvider.SolrSearchIndex.Initialize()
  1. I tried to access the Slave Solr admin panel from the browser on CD VM on and it is working fine I can go to the web index also.
  2. I also tried to create the item and publish it to this and it is also getting reflected.
  3. Only the thing which I am doing which is against the concept is Our Slave servers are connected to Load Balancer but I am accessing these directly with IPs in the CD server.

Please let me know if require any more information.


1 Answer 1


I got the answer for this issue and below steps I followed to resolve it.

  1. I was using NAT IP so I checked my host file for this.
  2. It was host file entry where the host entry was made to another IP.
  3. Then I removed all the Solr host entry for this.
  4. Then I checked the issues was not getting reproduced.
  5. I also changed it to come from LB and it also working fine.

So I can conclude that the issue was wrong host entry which was pointing to the Solr which was not having schema file.

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