Site down last night

Thanks to everyone who sent some notes that our site was down last night. We were switching servers and not everything got migrated on time. I was happy that sucuri notified my on time:

Modifications:
%WARN: Size reduced by more than 50%. – Previous size: 2761. Current size: 984 (in bytes)
%INFO: Server setting changes – > <title>WordPress › Error
%ERROR: Error establishing a database connection
Changes follow:

14,20c14
< <title>
< Welcome to the Home of OSSEC
..
> Error establishing a database connection

They have a nice solution that does integrity checking on web sites, domains, etc. That was the other alert I got:

Sucuri nbim: http://www.ossec.net DNS modified

Modifications:
5d4
< ossec.net has address 75.126.x.z
> ossec.net has address 74.86.x.z