Check your Elasticsearch version

The most common problem you can encounter with Couchbase-Elasticsearch integration is that data fails to transfer due to an incompatible Elasticsearch version. Elasticsearch has evolved between versions and Couchbase Plugin for Elasticsearch has been specifically designed a tested for a particular version. If you use a higher version or lower version, it will result in failure to transfer data. If you have an incompatible version of the plug, you might see the following message:

        Attention - Failed to grab remote bucket info from any of known nodes

      

If you check the Elasticsearch head console, a stack trace similar to the following displays:

        [2012-12-19 05:50:41,758][WARN ][org.eclipse.jetty.servlet.ServletHandler] Error for /pools/default/buckets
     java.lang.NoSuchMethodError:
     ....

      

If you get this error make sure you are using the plug-in with the correct version of Elasticsearch.

Check destination cluster references

The second most common error that occurs is when you create a cluster reference in Couchbase Web Console then at a later time create and start the replication. After you create a reference to your Elasticsearch cluster, the IP address may change, especially if you are using Elasticsearch on a laptop. In this case you will get this error under XDCR | Ongoing Replications | Status:

        ![](images/elastic_xdcr_ref_fail.png)

To resolve this error, check your remote Elasticsearch reference in XDCR and
make sure the IP address is correct.