Very nasty Linode Fremont datacenter power outage that affected this forum So much so, I decided to setup a DNS based 503 maintenance failover back up for the forums so in future if such outages occur, it will failover at DNS level to an off host secondary VPS server setup for community.centminmod.com for SSL https which is permanently in 503 status maintenance mode. So from end user's perspective hitting forum domain when Linode datacenter is down will instead of broken page unavailable browser message, it will direct to secondary VPS and show a 503 maintenance message for visitors with a more useful message an explanation for visitors The secondary VPS setup 503 maintenance message from visitor perspective just 503 unavailable maintenance message on secondary VPS Looks like my server has been up for a few minutes after power was restored to the datacenter Code (Text): uptime 06:53:47 up 3:57, 1 user, load average: 0.00, 0.00, 0.00 Nearly 4hrs downtime Code (Text): Date Enabled (hh:mm:ss) Down (hh:mm:ss) Uptime (%) 2015-05-01 1 day 00:00:00 00:00:00 100 2015-05-02 1 day 00:00:00 00:00:00 100 2015-05-03 1 day 00:00:00 00:00:00 100 2015-05-04 1 day 00:00:00 00:00:00 100 2015-05-05 1 day 00:00:00 00:00:00 100 2015-05-06 1 day 00:00:00 00:00:00 100 2015-05-07 1 day 00:00:00 00:00:00 100 2015-05-08 1 day 00:00:00 00:00:00 100 2015-05-09 1 day 00:00:00 00:00:00 100 2015-05-10 1 day 00:00:00 00:00:00 100 2015-05-11 1 day 00:00:00 00:00:00 100 2015-05-12 1 day 00:00:00 00:00:00 100 2015-05-13 1 day 00:00:00 00:00:00 100 2015-05-14 1 day 00:00:00 00:00:00 100 2015-05-15 1 day 00:00:00 00:00:00 100 2015-05-16 1 day 00:00:00 00:00:00 100 2015-05-17 1 day 00:00:00 00:07:55 99.45 2015-05-18 1 day 00:00:00 00:00:00 100 2015-05-19 1 day 00:00:00 00:00:00 100 2015-05-20 1 day 00:00:00 00:00:00 100 2015-05-21 1 day 00:00:00 00:00:00 100 2015-05-22 1 day 00:00:00 00:00:00 100 2015-05-23 1 day 00:00:00 00:00:00 100 2015-05-24 1 day 00:00:00 00:00:00 100 2015-05-25 1 day 00:00:00 00:01:16 99.912 2015-05-26 1 day 00:00:00 00:00:00 100 2015-05-27 1 day 00:00:00 00:00:00 100 2015-05-28 1 day 00:00:00 00:00:00 100 2015-05-29 1 day 00:00:00 00:00:00 100 2015-05-30 07:04:14 03:57:49 43.94 total 29 days 07:04:14 04:07:00 99.414
So what happened, did they say what the real issue was and what steps are being taken to not have this problem in the future. I don't know how many times I've seen it, but for whatever reasons, backup generators always seem to not work when they're supposed to work.
As I switched DNS providers from DNSMadeEasy to AWS Route53, had to redo the failover DNS for this forum's domain on Route53. Just a heads up if folks get funky access DNS wise. It should only kick over to failover DNS IP server if main Linode server is down and you'd be greated with that Site Unavailable notice page on the secondary backup server
Do you have a post/article on this configuration? I noticed on a different thread how you used this to show a maintenance page as well during the KVM migration.
