I have a CentOS server with two wordpress sites configured under two separate users.
One of the sites I was able to login and upgrade to 3.4.2 without any issue. But the other site fails with an error that points to DNS -
Downloading update from http://wordpress.org/wordpress-3.4.2-partial-1.zip…
Download failed.: Couldn't resolve host 'wordpress.org'
Now, if it were actually DNS - then my other site should not have upgraded. I've tried running the upgrade multiple times and same result.
So... I loaded up tcpdump and did a sniff on the wire. When I execute the upgrade, it is not even attempting to do a DNS query. There is nothing going out.
My question is, if DNS failed once and the upgrade process failed, is there a file that is flagged or a bit set somewhere that I need to go turn off? Because as of right now, without the upgrader even attempting to query again he will never know whether or not the site is available.