I've got a couple of subdomains set up for client testing:
Each of these has a WordPress install with an associated SQL database. As of a few weeks ago (last time I checked), both were working fine. But today, client1 is fine, while client2 is nearly unreachable. I say "nearly" because I can get HTML files to load if I explicitly type their URLs. But PHP isn't happening. I thought I had an .htaccess problem, but the two subdomains use the same .htaccess (which has nothing in it specific to the domain); plus, as I mentioned, client2 was working a couple of weeks ago, I haven't touched it, and no one else would know how to.
I went to PHPMyAdmin to see if anything was funky with the database, and discovered that I can't even run that: trying to get to mysql.client2.mydomain.com, the system just spins its wheels, just like when I try to get to the site or the WP control panel. I don't even get to the authentication screen. This makes me think the problem may be something beyond my control.
EDIT: This was going on for about an hour. As soon as I posted this message, I went back to try again, and lo and behold, both the site and PHPMyAdmin are fine. This reminded me that when I first set the subdomain up, I had the same problem, though then it only lasted about ten minutes and I attributed it to network weirdness.
So: The subdomain is unreachable, then magically reappears. Clearly not something I can control. Again: thoughts? I'd like to figure this out before the client takes a look at the site, which will probably be tomorrow. Thanks.