<p>Dear Amazon Web Services Customer,</p>: a8 [2 \) T: V$ {8 v3 x7 L
. L4 J+ q" K) ~
<p>We are excited to announce that Route 53 DNS Failover now supports , z/ ~" D, d. P, D5 g
Elastic Load Balancing (ELB) endpoints. Starting today, you can use 8 @" P) z v2 I5 T' D
Route 53’s existing health checking and DNS failover features for 4 ^; L1 N, L$ A
applications running behind an ELB, to increase redundancy and % f7 }& r8 j+ `9 ~/ _3 b. f
availability for these apps.</p>; V( ~0 q* Q; j: \ P. l; m) h4 s
# P3 C) w \2 N% n/ | H
<p>With DNS Failover, Amazon Route 53 can help detect an outage of your $ g( U# k1 j! m" ]. A$ w2 w4 o8 V
website and redirect your end users to alternate locations where your & G$ j' v/ y- V
application is operating properly. When you enable this feature, Route " l9 U9 F4 T6 _0 s* K5 ~9 y. Y
53 uses health checks—regularly making Internet requests to your 4 c9 L0 r1 f/ Y* d% v6 U
application’s endpoints from multiple locations around the world—to . F. R. A, e2 F, X
determine whether each endpoint of your application is up or down. </p>8 ~' L7 ]1 ?0 r) ~2 I
9 a% y% Z& v* X! u
<p>For ELB endpoints, Route 53 evaluates the health of the load balancer 1 s9 ?' n$ I& p! C1 h0 n/ R y6 ?# W G
itself and the health of your application running on the EC2 instances , v* r9 I9 A8 R1 m) e* q
behind it. If any part of the stack goes down, Route 53 detects the 4 N9 {$ Y* g$ Q6 Z a
failure, routes traffic away from the load balancer, and directs traffic- z: x5 D( z) P7 O! F& F
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 ! R- x# m/ w6 M
endpoints as well as endpoints located in your own datacenter.</p> ; B! o7 K9 g0 \) {6 d3 d0 ^. v
" [, U5 h- a9 r3 i* R. l
<p>Using Route 53 DNS Failover, you can run your primary application ! i8 p" n! L# Q H8 X
simultaneously in multiple AWS regions around the world. Route 53 - Y( B/ Z- r+ h
automatically removes from service any region where your application is ; l; G, t: Z1 f0 h9 z3 f
unavailable. You can also take advantage of a simple backup site hosted " o9 h) A5 u1 I! v5 u9 d+ g' F
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing - q1 f0 e% J M- H% L2 P9 v3 R9 _
users to this backup site in the event that your application becomes % k* F+ E% H- ?0 k2 r, n! X
unavailable.</p>9 Z7 t0 t; p: B
) P; a6 P( D3 Q/ l8 v
<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>3 R! g. m4 Y* L. |- n' e2 ~
, I; B: C, S2 N* n- _0 s
<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>2 y' e z: m6 L5 [- O
6 q* h. A7 s6 V! [5 r& a
<p>Sincerely, 4 o/ j1 t5 t! h- [% D4 J7 G+ P
" b) h' @2 I7 C* T) Z2 m- o
8 Q2 z3 D8 W% K7 I9 {
The Amazon Web Services Team</p>
复制代码
对于使用route53的同学是个好事，简单的 geo dns + failover 3 B& T3 O [4 ?( W* |+ r) H7 m0 K8 H5 K; [8 _$ }1 t; L
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
