The latest odd fix for Asterisk after an upgrade (11.13.0~dfsg-1~bpo70+1):
cd /usr/share/asterisk/sounds && ln -s en_US_f_Allison en
I don’t know when this broke. I found out because calling voicemail would fail (due to a missing password prompt sound file).
I’m not sure what failed last night, but I’m guessing the cable Internet connection was down. Interestingly, unbound had stopped resolving even local zones configured with stub-zone and stub-addr directives. This was unexpected: stub-zones are supposed to work “without referring to the public Internet” per the unbound.conf manual page.
To mitigate the issue I wanted to have backup name servers in resolv.conf (ones using a different Internet connection) even on the resolving name server hosts themselves. With resolvconf that boiled down to creating /etc/default/resolvconf with the following setting in it:
TRUNCATE_NAMESERVER_LIST_AFTER_LOOPBACK_ADDRESS=no
This way name servers configured in /etc/network/interfaces (using dns-nameservers directives) are included in resolv.conf even when unbound has been started.
However, this is a poor workaround, as I don’t have multiple Internet connections at every site.
Debian 7.0 “wheezy” was officially released about a week ago. I’ve been running it on a couple of systems for a few months already because of the more recent software versions available on it. Today I upgraded one of the shell servers, a couple of days ahead of the originally posted schedule due to security updates to MySQL (DSA-2667). As usual for Debian, the upgrade process is well documented1 and robust. However, here are some notes for upgrading the next instance. (more…)