<p>Dear Amazon Web Services Customer,</p> 5 ^$ D0 O* Y+ y' C! i+ N
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<p>We are excited to announce that Route 53 DNS Failover now supports - ^9 t' g. N ^+ C) z7 ?
Elastic Load Balancing (ELB) endpoints. Starting today, you can use 1 S g* J. G! G3 E
Route 53’s existing health checking and DNS failover features for ) x" E5 a( Q; b+ x) \
applications running behind an ELB, to increase redundancy and 4 S. ]$ p4 U$ T( S, \
availability for these apps.</p> 9 Y/ l4 v8 ^$ _7 Q/ n1 ~
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your " E, y4 l+ q8 y( ?# P
website and redirect your end users to alternate locations where your ) l: p6 i9 Q c2 m7 C7 G' T
application is operating properly. When you enable this feature, Route / f( U# r: Z8 [* j+ u( `% e
53 uses health checks—regularly making Internet requests to your , N. M- f+ O5 ~; Q) O/ X
application’s endpoints from multiple locations around the world—to 0 |7 _! [8 @- H. Z: k" X
determine whether each endpoint of your application is up or down. </p> / A) }5 m0 E- T) D" T
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer* A) H, K7 h3 n0 b2 f0 _6 |
itself and the health of your application running on the EC2 instances : s1 i$ w- G* ]+ c% L; T. v
behind it. If any part of the stack goes down, Route 53 detects the . i- }: p8 }1 t
failure, routes traffic away from the load balancer, and directs traffic* |8 i( c7 w' Q) @7 h2 z7 O5 W; o# }
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 q0 G9 c% b$ C$ z, O0 H5 h
endpoints as well as endpoints located in your own datacenter.</p> d# P& e5 c/ t' |& H: n
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<p>Using Route 53 DNS Failover, you can run your primary application & V, ]$ D) {- A9 y
simultaneously in multiple AWS regions around the world. Route 53 8 F/ X) b6 m5 S6 v6 H
automatically removes from service any region where your application is & X( q' K3 l; o4 P1 [$ V- a4 M2 j
unavailable. You can also take advantage of a simple backup site hosted 9 `1 B& q0 K" Q, E& o" L
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing 3 D. U( a2 C8 Y5 z
users to this backup site in the event that your application becomes 0 X6 i) F8 V" l; T* s1 Y. X
unavailable.</p> % G# N) F1 h2 {' ^( [
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<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> 2 @% l0 S0 s' E7 \! w$ K' a! l
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<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> / T8 b! X i: Y, z \1 \9 S% t
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<p>Sincerely, 9 g3 x' \4 L3 w$ d# [& u
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The Amazon Web Services Team</p>
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对于使用route53的同学是个好事，简单的 geo dns + failover+ @2 y4 z) O1 G6 A1 H1 g+ o% X2 P. M
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
