Managing an Internet outage
diggins at McMaster.CA
Sun May 11 19:31:19 UTC 2008
We occasionally have a situation where our Internet access is completely
down. My Manager has asked about the viability of locating a DNS server
off site, and during a situation when we're down, modifying it so that it
resolves my entire domain to a single IP address. Web users would be
redirected to that address, and a web page would explain we're off line.
Our DNS TTL is set to 1 hour, however, I'm concerned that sites might
cache that address for longer than the TTL, and affect things such as mail
delivery beyond the outage. Does anyone have an opinion on this plan?
Obviously improving our redundancy is a better solution, and that will
come in time. Right now this seems like a quick and easy (dirty) solution.
More information about the bind-users