问题
I'm trying to get a new instance of Couchbase set up on Azure, and having trouble connecting from the .net SDK.
For setup, I have followed steps here: http://blog.couchbase.com/step-step-production-deployment-couchbase-windows-azure-virtual-machines (took several attempts to get this up and running on an azure virtual network)
Have installed Version: 2.5.1 enterprise edition (build-1083) on windows Server 2012 R2.
I'm running only one VM to begin with. Medium sized, serving nothing but couchbase.
Have opened azure ports both on the machine itself, and the azure cloud service. Have set new inbound rules on the VM firewall according this document: http://docs.couchbase.com/couchbase-manual-2.0/#network-ports. On the Azure cloud service, I've opened anything marked as 'node to client' from that document (8091, 8092, 11210, 11211).
Everything seems to be fine in the browser. From my dev machine, I can load couchbase from the azure VM external IP. I have logged in and added a testdoc to the 'default' bucket. I can view this document in the browser, and everthing appear good.
The problem is when I start trying to access from .net application. When I try to .ExecuteGet the testdoc, I'm getting 'Unable to locate node' message, and the resulting doc is null.
Logs are telling me that the address is ok, but there is an error at System.Dns.GetAddrInfo(String name). Here is the full log up to the error:
2014-09-12 14:40:58,291 [10] DEBUG Couchbase.CouchbasePool [(null)] <(null)> - Initializing Couchbase.CouchbasePool
2014-09-12 14:40:58,345 [10] WARN Enyim.Caching.MemcachedClient [(null)] <(null)> - Creating new client. CID: ffcc1454-1146-4fac-94b6-c74dae07ca4b CouchbaseClient
2014-09-12 14:40:58,348 [10] WARN Couchbase.CouchbasePool [(null)] <(null)> - Starting Couchbase.CouchbasePool
2014-09-12 14:40:58,468 [10] WARN Couchbase.MessageStreamListener [(null)] <(null)> - Starting the listener. Queue=True
2014-09-12 14:40:58,485 [3] WARN Couchbase.MessageStreamListener [(null)] <(null)> - Started working.
2014-09-12 14:40:58,518 [3] WARN Couchbase.MessageStreamListener [(null)] <(null)> - Looking for the first working node.
2014-09-12 14:40:58,621 [3] DEBUG Couchbase.ConfigHelper [(null)] <(null)> - Found config for bucket default.
2014-09-12 14:40:58,622 [3] WARN Couchbase.MessageStreamListener [(null)] <(null)> - Resolved pool url http://xx.xxx.xx.xxx:8091/pools to http://xx.xxx.xx.xxx:8091/pools/default/bucketsStreaming/default?bucket_uuid=d679672b019cff2053f507a2f4fd642a
2014-09-12 14:40:58,622 [3] WARN Couchbase.MessageStreamListener [(null)] <(null)> - Start receiving messages.
2014-09-12 14:40:58,661 [3] INFO Couchbase.CouchbasePool [(null)] <(null)> - Received new configuration.
2014-09-12 14:40:58,717 [cbp_thread] INFO Couchbase.CouchbasePool [(null)] <(null)> - Has vbucket. Server count: 1
2014-09-12 14:40:58,803 [cbp_thread] ERROR Couchbase.CouchbasePool [(null)] <(null)> - Failed to initialize the pool.
System.Net.Sockets.SocketException (0x80004005): The requested name is valid, but no data of the requested type was found
at System.Net.Dns.GetAddrInfo(String name)
at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6)
at System.Net.Dns.GetHostAddresses(String hostNameOrAddress)
at Couchbase.CouchbasePool.GetFirstAddress(String hostname)
at Couchbase.CouchbasePool.InitVBucket(ClusterConfig config, ISaslAuthenticationProvider auth)
at Couchbase.CouchbasePool.ReconfigurePool(ClusterConfig config)
I suspect, as the error is DNS related, that I've screwed something up on the config of the CB machine, but I've had no luck figuring out what. Any ideas?
回答1:
Got it resolved. Had to put the client machine on the same virtual network, tweak the host file, and finally, change the .net app.config to use the same host name I gave to couchbase when installing it.
more detail here: http://forums.couchbase.com/t/access-couchbase-on-azure-windows-2012-vm-from-net/1580/5
来源：https://stackoverflow.com/questions/25811551/access-couchbase-on-azure-windows-2012-vm-from-net