$10
Why would WordPress fail to connect to database?

I'm developing on a Linux machine, connected over a network to other servers, including the database server.

I've a site, originally Lyceum and then upgraded to WordPress 3.

I get "Error establishing database connection".

If I open wp-config.php and echo the db name, password, user and host to the screen, and copy and paste all this to a terminal and try to reach mysql from the terminal, then everything works fine. I can get into Mysql from the terminal.

I also have other PHP projects on this computer that are reaching the same database servers with no problem.

But this WordPress project, despite having valid credentials in wp-config.php, is not reaching those servers.

Why?

[UPDATE]

If I point my browser at wp-admin/install.php, on my local machine, I get:

Notice: Trying to get property of non-object in /usr/local/src/st/workspace/trunk/build/blogs/wp-includes/ms-settings.php on line 107 

Notice: Trying to get property of non-object in /usr/local/src/st/workspace/trunk/build/blogs/wp-includes/ms-settings.php on line 108 

Notice: Undefined property: stdClass::$deleted in /usr/local/src/st/workspace/trunk/build/blogs/wp-includes/ms-load.php on line 53 

Notice: Undefined property: stdClass::$deleted in /usr/local/src/st/workspace/trunk/build/blogs/wp-includes/ms-load.php on line 62 

Notice: Undefined property: stdClass::$archived in /usr/local/src/st/workspace/trunk/build/blogs/wp-includes/ms-load.php on line 69 

Notice: Undefined property: stdClass::$spam in /usr/local/src/st/workspace/trunk/build/blogs/wp-includes/ms-load.php on line 69

Lawrence Krubner | 04/29/11 at 4:04pm | Edit

Previous versions of this question: 04/29/11 at 4:56pm

(3) Possible Answers Submitted...

Last edited:
04/29/11
4:13pm
Michael Fields says:
Is it possible that you have a wp-config.php one directory above your installation that has bunk credentials in it? WordPress will use this instead of the wp-config in the actual installation. I lost about 30 minutes to this one day :(
- 04/29/11 4:57pm
  
  Lawrence Krubner says:
  Interesting. There are a lot of symlinks that stitch the system together. I'll keep this in mind.
- 04/29/11 4:59pm
  
  Lawrence Krubner says:
  Do you happen to know where the error "Error establishing database connection" is triggered? It would be interesting to hack to that point and then check the config parameters right there.
- 04/29/11 5:01pm
  
  Lawrence Krubner says:
  Huh.
  
  grep -iR "Error establishing database connection" *
  
  blogs/wp-includes/ms-load.php: $title = /*WP_I18N_FATAL_ERROR*/'Error establishing database connection'/*/WP_I18N_FATAL_ERROR*/;
  
  grep: blogs/wp-content/blogs.dir: No such file or directory
Last edited:
04/29/11
4:15pm
Hardeep Singh says:
Hello,

Please check, if user is allowed to access from other systems.

Are you able to connect usimg PHPMyAdmin?

- Hardeep
- 04/29/11 4:57pm
  
  Lawrence Krubner says:
  I'm able to connect from the terminal.
Last edited:
04/29/11
4:25pm
Lew Ayotte says:
Also, If the MySQL Database is over the network and the site's IP address is not allowed to connect, it may have trouble.
- 04/29/11 4:58pm
  
  Lawrence Krubner says:
  But I have other PHP projects on my machine that are connecting. Obviously, they all have the same IP, they are all coming from my machine.