Azure MySQL服务器名称未找到：本地CMD连接报错9002求助

Hey there, let's work through this frustrating connection issue you've been stuck on for two days. ERROR 9002 usually points to a problem resolving your Azure MySQL server's name, so let's break down the most likely fixes step by step:

1. Use the Full FQDN (Fully Qualified Domain Name) #

Azure MySQL servers don't use just the short name eztolluser1 for connections—you need the complete domain. The correct server address is:
eztolluser1.mysql.database.azure.com

You can confirm this by heading to your Azure Portal, navigating to your MySQL server's Overview page, and copying the full value listed under the "Server name" field. Your connection command should look like this (replace <your-username> with the admin username you created):

mysql -h eztolluser1.mysql.database.azure.com -u <your-username>@eztolluser1 -p

Note: The username must include @eztolluser1 at the end—this is required for Azure MySQL authentication.

2. Test DNS Resolution Locally #

If the full FQDN still isn't working, your local DNS might not be able to resolve Azure's domain. Run this command in CMD to check:

nslookup eztolluser1.mysql.database.azure.com

• If it returns "Non-existent domain", try flushing your local DNS cache:

  ipconfig /flushdns
  

• If that doesn't help, switch your network's DNS server to a public one like Google's 8.8.8.8 and try again.

3. Verify Firewall Rules (Yes, Even for Name Resolution Issues) #

While this error is about name lookup, misconfigured firewalls can sometimes cause indirect connection failures. Double-check:

• Your local public IP address is added to the Firewall rules section of your Azure MySQL server. You can use the "Add client IP" button in the Portal to auto-populate this.
• The server's firewall isn't set to block all incoming traffic (make sure at least your IP is allowed).

4. Check for Network Restrictions #

If you're on a corporate network or using a VPN, your network might be blocking port 3306 (the default MySQL port) or preventing DNS queries to Azure's domains. Test connectivity to the port with:

telnet eztolluser1.mysql.database.azure.com 3306

If this fails, reach out to your network administrator to ensure port 3306 is open and Azure database domains aren't blocked.

5. Confirm Server Status #

Quickly check your Azure Portal to make sure your eztolluser1 server is in the Running state. It's rare, but sometimes servers can get paused (if using a flexible tier with auto-pause) or have provisioning issues.

Start with step 1 first—9 times out of 10, the missing FQDN suffix is the culprit. Let me know if any of these steps get you connected!

内容的提问来源于stack exchange，提问作者Kushal D