<p>Dear Amazon Web Services Customer,</p>; j# G) h' i( w V% t' |+ F
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<p>We are excited to announce that Route 53 DNS Failover now supports + K5 C' ~, B" b+ |. H& I
Elastic Load Balancing (ELB) endpoints. Starting today, you can use " S- u% U# i+ U- `" A- W h
Route 53’s existing health checking and DNS failover features for ; x5 ~* I0 i0 \3 P* s
applications running behind an ELB, to increase redundancy and " q. c+ @0 f7 R- D
availability for these apps.</p> 9 L5 C+ `: w5 q1 Q, v1 b# d/ t" I k
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your . K, L0 e N( m/ ]" B- X+ d$ U% p/ B
website and redirect your end users to alternate locations where your * a$ \: D- l) \- g+ R
application is operating properly. When you enable this feature, Route 4 p# \' B s5 h7 Z t( T6 p
53 uses health checks—regularly making Internet requests to your ' A. R# @ j) ^0 ]( e
application’s endpoints from multiple locations around the world—to 7 Q' y! i- F% v! |2 _- M
determine whether each endpoint of your application is up or down. </p>" `# n- ~2 B; W3 ?1 v5 J
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer 5 X$ P7 w3 _; W9 {3 F; ~
itself and the health of your application running on the EC2 instances 8 R8 S/ o! @7 | V/ E4 u% u
behind it. If any part of the stack goes down, Route 53 detects the v, U) I; F/ ]' N5 c9 k6 L
failure, routes traffic away from the load balancer, and directs traffic / X0 u5 i4 D1 _$ E6 E; [
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2" ~: m9 \- Z5 _" @5 c
endpoints as well as endpoints located in your own datacenter.</p>/ Q f. U3 e8 x" Y3 `" g, Z
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<p>Using Route 53 DNS Failover, you can run your primary application 9 b2 v, ]) W4 V* r% y* L4 k
simultaneously in multiple AWS regions around the world. Route 53 3 ~, ^" b. L, \: ?0 x8 G3 s. U2 F
automatically removes from service any region where your application is ! p4 Y. M* o# r9 ~% Z8 p1 x0 p
unavailable. You can also take advantage of a simple backup site hosted ( ?( ^9 p, X1 p: S- f; x: g8 A
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing 2 r+ D/ |9 x% p7 B; K
users to this backup site in the event that your application becomes : x) a2 R+ c& \- @7 v/ E
unavailable.</p> f( O4 [% m/ k0 X4 x5 E
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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> 9 B5 y' F1 S) j& {
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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> 3 D; M* [: \' s/ N+ z7 N
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<p>Sincerely, / {/ q$ f X8 }( l
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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( X d n8 j1 A3 h
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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
