68 reputation
9
bio website scientologyparent.com
location Washington, DC
age
visits member for 3 years, 6 months
seen Oct 1 at 20:22

Oct
8
awarded  Tumbleweed
Oct
1
asked “Not allowed to change Adminstrator's password via UI” in Adobe CQ 5.6.1
Apr
29
awarded  Popular Question
Sep
26
awarded  Popular Question
Jan
6
awarded  Revival
Aug
10
awarded  Supporter
Aug
10
asked Using a DBM RewriteMap to rewrite thousands of legacy URLs
Apr
19
awarded  Teacher
Apr
19
answered How does F5 GTM work?
Apr
19
awarded  Commentator
Apr
19
answered Run http server behind proxy
Apr
19
comment Using Apache Environment Variables to set custom ErrorDocument
Does this change the fact above that ErrorDocument currently (or at least on 2.2) doesn't allow for conditional processing?
Nov
15
comment What happens when multiple DNS servers fail?
Relatively simply. Currently, gtm1.company.com and gtm2.company.com (in two different datacenters) serve dns for the company.com site, giving out the IP for datacenter1.company.com or datacenter2.company.com depending on LB strategy. I could front company.com at Dyn, and CNAME that to something like company.net - which will be NS'ed to our GTM load balancers. Should then allow for normal operation, but in the event of total failure, allow us to immediately switch the company.com CNAME to an alternate location.
Nov
14
comment What happens when multiple DNS servers fail?
There are some load-balancing and failover scenarios that the F5 Global Traffic Managers can handle better than Dyn or Ultra, so we can't abandon that entirely.
Nov
12
accepted What happens when multiple DNS servers fail?
Nov
12
comment What happens when multiple DNS servers fail?
Unfortunately for me, cranking the TTLs doesn't help, as there load balancers there which use DNS to load-balance & fail over, and thus require a very low TTL to work. I think my solution in this case will be to front the internal-hosted DNS with UltraDNS or Dyn, and just CNAME back to our load balancers. That way, in event of total failure, DNS can be rapidly re-pointed to a DR or Business Continuity site.
Nov
12
comment What happens when multiple DNS servers fail?
Thanks for that. Yes, I was a bit bleary when I wrote this, definitely did not mean WHOIS record (whatever that would be) but you seem to get the gist of what I'm after. What I couldn't find in the DNS RFCs or in Cricket's book as yet are how resolvers approach the list of name servers and what they do when they hit one that does not respond, and I think I have my answer above - they will time out, and use another one - hopefully before DNS times out.
Nov
10
asked What happens when multiple DNS servers fail?
Sep
23
comment Is there if-then-else logic available for Apache environment variables?
Thanks - though in this case I have potentially many more settings I'd LIKE to be able to include if I were able to use such if/else logic inside the conf files on a per-request basis. So if anyone has any bright ideas, I'm all for them.
Sep
22
asked Is there if-then-else logic available for Apache environment variables?