<p>Dear Amazon Web Services Customer,</p>; N. f9 j5 x- @$ K) t% ]2 l8 W$ f
& T' b1 o% K6 C1 H3 c
<p>We are excited to announce that Route 53 DNS Failover now supports ; y% `$ F7 |+ S4 G$ n
Elastic Load Balancing (ELB) endpoints. Starting today, you can use 1 H. t! y7 P) T( W
Route 53’s existing health checking and DNS failover features for 8 b; W$ V m+ \% i% d% F7 Y* @
applications running behind an ELB, to increase redundancy and % W* ]/ {* h" M+ ]
availability for these apps.</p> $ m1 g/ W. M6 D* n7 d
9 ]% k4 }! L. K: U# P
<p>With DNS Failover, Amazon Route 53 can help detect an outage of your k6 Q& z$ t% N
website and redirect your end users to alternate locations where your ( }! [) w4 g* n% p
application is operating properly. When you enable this feature, Route 6 g3 a) I: x$ c1 k
53 uses health checks—regularly making Internet requests to your 7 C3 ^) o1 B4 i3 q' K V' a4 I- |/ B
application’s endpoints from multiple locations around the world—to ! n/ E/ M; q) h G- d$ |
determine whether each endpoint of your application is up or down. </p> . U( n$ j" k( y
8 h1 w& a0 M0 k% }- {
<p>For ELB endpoints, Route 53 evaluates the health of the load balancer ( U2 `5 Y7 h2 i3 O
itself and the health of your application running on the EC2 instances 5 F5 R7 W* Z0 y% U7 B$ G
behind it. If any part of the stack goes down, Route 53 detects the " N" C) a0 G8 d! K
failure, routes traffic away from the load balancer, and directs traffic / P, c3 a) G3 Z; [5 A: c7 B2 A* I. a
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC29 T- W8 ~/ X9 U
endpoints as well as endpoints located in your own datacenter.</p> ; Q l+ P" |" h* j& h
, K' ^4 g( H' |0 W0 L
<p>Using Route 53 DNS Failover, you can run your primary application 9 G; T% J2 }, J' P+ p* z
simultaneously in multiple AWS regions around the world. Route 53 * p! c3 W# L' g5 B# R! J" q
automatically removes from service any region where your application is 4 W4 j$ a, z" M1 x# I0 z
unavailable. You can also take advantage of a simple backup site hosted * m, z$ b# h D5 A; [
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing ) @4 {: a6 S t1 Y
users to this backup site in the event that your application becomes 7 o) e9 h+ D- S9 ~. j4 T' x1 s) I+ D
unavailable.</p> 3 R( Q: u1 ]1 Q& w7 q
r) S% s7 U e n4 p/ N
<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>+ e" |, K5 a; P& }, c6 N7 A6 P0 H; h! K
* P* s* g, Q7 F w; U
<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>1 {! r( P" J( g, l6 o8 { T2 Y
Q; v; v M4 i3 }! u6 w
<p>Sincerely,, i% Z$ v' p3 }5 L* q1 F3 W
* G1 i4 e9 g# g2 m) ]
& C7 x+ ?; r( M# V+ N( s) O
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 + failover8 _4 `, \: V% p$ U3 {" H 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
