How do I troubleshoot MySQL connection?

Question

Some permanent solutions are: Determine what is wrong with your DNS server and fix it. Specify IP addresses rather than host names in the MySQL grant tables. Put an entry for the client machine name in /etc/hosts on Unix or \windows\hosts on Windows. Start mysqld with the skip_name_resolve system variable enabled.

How do I troubleshoot MySQL?

2.10.1Check the error log to see why the server does not start. ... 2Specify any special options needed by the storage engines you are using. ... 3Make sure that the server knows where to find the data directory. ... 4Make sure that the server can access the data directory.

Why MySQL database is not connecting?

normally means that there is no MySQL server running on the system or that you are using an incorrect Unix socket file name or TCP/IP port number when trying to connect to the server. You should also check that the TCP/IP port you are using has not been blocked by a firewall or port blocking service.

How do you troubleshoot database connection issues?

How To Fix “Error Establishing a Database Connection”1Step 1: Get In Touch With Your Web Host Provider. ... 2Step 2: Check If Your Plugin or Theme Files Haven't Been Corrupted. ... 3Step 3: Check If Your Database Hasn't Been Corrupted. ... 4Step 4: Check Your Database Connection Credentials. ... 5Step 5: Restore The Default WordPress Files.

How do I test MySQL connection?

To test the connection to your database, run the telnet hostname port on your Looker server. For example, if you are running MySQL on the default port and your database name is mydb, the command would be telnet mydb 3306 . If the connection is working, you will see something similar to this: Trying 10.10.

Expert · Answer

2.10.1Check the error log to see why the server does not start. ... 2Specify any special options needed by the storage engines you are using. ... 3Make sure that the server knows where to find the data directory. ... 4Make sure that the server can access the data directory.

Expert · Answer

normally means that there is no MySQL server running on the system or that you are using an incorrect Unix socket file name or TCP/IP port number when trying to connect to the server. You should also check that the TCP/IP port you are using has not been blocked by a firewall or port blocking service.

Expert · Answer

How To Fix “Error Establishing a Database Connection”1Step 1: Get In Touch With Your Web Host Provider. ... 2Step 2: Check If Your Plugin or Theme Files Haven't Been Corrupted. ... 3Step 3: Check If Your Database Hasn't Been Corrupted. ... 4Step 4: Check Your Database Connection Credentials. ... 5Step 5: Restore The Default WordPress Files.

Expert · Answer

To test the connection to your database, run the telnet hostname port on your Looker server. For example, if you are running MySQL on the default port and your database name is mydb, the command would be telnet mydb 3306 . If the connection is working, you will see something similar to this: Trying 10.10.

How do I troubleshoot MySQL connection?