Dreamweaver MySQL Connection Error

I am trying to setup a site within Dreamweaver CS4 and I have never had so much trouble. I have successfully setup and connected to the remote and testing servers. I am now trying to add my MySQL database but continue to receive the following error:

MySQL Error#: 2013
Lost connection to MySQL server at 'reading initial communication packet', system error: 110

Using the same settings I am able to connect to the database using Navicat for MySQL. Ideas?

This is usually a straight forward process but this is my first attempt to do this using Rackspace Cloud as my host.
rmb8024Asked:
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Jason C. LevineConnect With a Mentor No oneCommented:
>> They conclude I must have a setting incorrect in Dreamweaver somewhere.

Maybe.

Try this:

Site | Advanced | Remove Connection Scripts

Then log in to the Rackspace site with a normal FTP or shell client (not DW) and delete the _mmServerScripts folder if it's still there.

Then try to rebuild the connection file and rebuild a recordset or other server behavior.
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Jason C. LevineNo oneCommented:
Hi rmb8024,

Error 2013 usually means there is a problem on the MySQL server end of things, not Dreamweaver.

Verify the MySQL server is up and running and listening on the correct ports for web traffic.
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rmb8024Author Commented:
Yes, I have verified the server is fine. I am able to connect using Navicat for MySQL, and phpMyAdmin. The issue seems to be isolated to Dreamweaver.
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Jason C. LevineNo oneCommented:
Dreamweaver uses mysql_pconnect() (persistent connection) to do its thing.  Open your connection file and change that to mysql_connect() and see if works any better.
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rmb8024Author Commented:
That was a good idea but unfortunately I get the same error when I test the MySQL connection.
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Jason C. LevineNo oneCommented:
Okay.

1) Where is the testing server for this site?

2) Does the mysql user have permission to access from any IP address?
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rmb8024Author Commented:
1) The testing server is the same physical server as the remote (live) server. I am using Rackspace Cloud as the host Do you need any more info then that?

2) Yes, I can only assume it does as I am able to use the same connection information in Navicat to access the database remotely.
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Jason C. LevineNo oneCommented:
1) No, no more info than that.

2) Weird.  It's almost as if DW itself is being blocked.  Can you check firewalls and other security software/appliances to be sure DW can connect out?
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rmb8024Author Commented:
That is what is strange, I can select any of my other sites with databases and it connects fine. That said, none of my other sites are hosted at Rackspace Cloud.

I contacted Rackspace but all their tests say it is operating fine. They conclude I must have a setting incorrect in Dreamweaver somewhere.
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rmb8024Author Commented:
Jason,

Rackspace gives an IP to connect to when remotely accessing MySQL but to connect from within the script loaded on the server it is a hostname. I had tried using the hostname previously but it gave the same result.

I tried again after your last suggestion and the hostname works! The IP still does not. Very interesting because even Rackspace told me the hostname will not work.

Thanks for your patience and all your help!
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Jason C. LevineNo oneCommented:
>> Very interesting because even Rackspace told me the hostname will not work.

That is weird.  If it causes you problems in the future, you can always edit the connection file and replace the hostname with the IP address.
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