<p>Dear Amazon Web Services Customer,</p>: @& H; P6 a/ ~# H+ ]+ r2 e
- g2 j" H/ a* Z" B9 s9 m- Z9 _
<p>We are excited to announce that Route 53 DNS Failover now supports 2 S- l- T* u% o8 n7 P" b0 l* H
Elastic Load Balancing (ELB) endpoints. Starting today, you can use 3 Y t) |! C5 e2 ~, S+ u7 Y
Route 53’s existing health checking and DNS failover features for 2 m4 p5 K0 |& b$ _ c& r: n$ [
applications running behind an ELB, to increase redundancy and , F0 `& e4 b! m2 e0 x* l9 }% E
availability for these apps.</p>5 l) I$ [7 P7 V7 l9 ^: d7 Z# b ?
* k3 n/ i' B6 {: S! T0 [, R% b
<p>With DNS Failover, Amazon Route 53 can help detect an outage of your 6 ^9 q- `) A4 J" F/ K" w
website and redirect your end users to alternate locations where your 4 ~2 v3 E) w3 `: B3 R
application is operating properly. When you enable this feature, Route : f9 x0 O3 g9 O! l+ i0 B
53 uses health checks—regularly making Internet requests to your & L* |3 o8 U! l; | ~; i5 u
application’s endpoints from multiple locations around the world—to : m- J3 w! F* h3 a% A: v! }4 ?
determine whether each endpoint of your application is up or down. </p> 5 w' F9 o- _0 i1 R
# e$ G- T9 k' B( r
<p>For ELB endpoints, Route 53 evaluates the health of the load balancer9 s& z3 p4 X+ O) H: j5 l* r* d9 n
itself and the health of your application running on the EC2 instances % o) m9 `. v" x# L" @
behind it. If any part of the stack goes down, Route 53 detects the " v4 H2 o7 ?& C; s1 k0 z" N) |7 e
failure, routes traffic away from the load balancer, and directs traffic6 v. G8 a7 `: k0 v
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2# ^* j& c* X5 |/ d) s) A# }0 t
endpoints as well as endpoints located in your own datacenter.</p> ' \8 g6 H7 ?* D) u
: L; _8 Z% F& d j& D$ \
<p>Using Route 53 DNS Failover, you can run your primary application 3 R& V9 _& @, e3 U
simultaneously in multiple AWS regions around the world. Route 53 1 t& b" C1 P% Q, d5 H. G* n; i9 S
automatically removes from service any region where your application is 0 ~; g6 ]5 i4 @2 Y# }
unavailable. You can also take advantage of a simple backup site hosted : b+ ]* {* I/ q- ^
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing : l) [/ J- k" T% V' j' h4 r
users to this backup site in the event that your application becomes & L4 [* t) d% g, ]# V1 U! u
unavailable.</p>1 y4 G0 k7 G5 _$ }
4 A2 Z" [1 `3 z3 [
<p>Health checks of Amazon ELB endpoints are free, and getting started is easy. To learn more, <a href="http://www.amazon.com/gp/r.html?R=2EMCE4T8E0NWD&C=3STR8RC5Q6H1Y&H=SUOGRM79MBBGDQ7LV8TUA2X4AYIA&T=C&U=http%3A%2F%2Faws.amazon.com%2Froute53%3Fref_%3Dpe_2170_30194830_8">visit the Route 53 product page</a> or review our walkthrough in the <a href="http://www.amazon.com/gp/r.html?R=2EMCE4T8E0NWD&C=3STR8RC5Q6H1Y&H=XGI2ROQULL3C7OX10QVMHGAWVRMA&T=C&U=http%3A%2F%2Fdocs.aws.amazon.com%2FRoute53%2Flatest%2FDeveloperGuide%2Fdns-failover.html%3Fref_%3Dpe_2170_30194830_9">Amazon Route 53 Developer Guide</a>.</p> : U; o0 D# g# c) x- {
7 U6 t& I: d: r6 ]( T5 @, v9 C
<p>Also, please feel free to join our <a href="http://www.amazon.com/gp/r.html?R=2EMCE4T8E0NWD&C=3STR8RC5Q6H1Y&H=J5S7YSYDGDMA3VFQM4MDM14GRX4A&T=C&U=http%3A%2F%2Fw.on24.com%2Fr.htm%3Fe%3D622099%26s%3D1%26k%3D3563EF264F8961EAF9AD217B6CE34446%26partnerref%3DLE%26ref_%3D7">webinar at 10:00 am PDT on July 9, 2013</a> to learn more about DNS Failover and the high-availability architecture options that it makes possible.</p>4 E/ q0 `- o6 [# s, O
发表于 2013-6-4 10:50:32
发表于 2013-6-4 11:54:54
，看不懂
发表于 2013-6-4 19:50:51
发表于 2013-6-5 00:27:56
楼主
