<p>Dear Amazon Web Services Customer,</p>2 L; {! t# k# L5 J' M
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<p>We are excited to announce that Route 53 DNS Failover now supports $ c, d! j- l* ^
Elastic Load Balancing (ELB) endpoints. Starting today, you can use + T- F% U1 L% Y6 g" }& |6 P
Route 53’s existing health checking and DNS failover features for $ A0 D; k0 P+ ?( l0 g/ f T6 I$ U
applications running behind an ELB, to increase redundancy and 0 a! i1 A0 _' D& |# y
availability for these apps.</p> ) L5 v! k" H% |
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your " l+ @ H0 j/ W" a- e4 w/ D2 z
website and redirect your end users to alternate locations where your 6 k6 }' \3 s, C: X
application is operating properly. When you enable this feature, Route 9 ]/ b: A/ M/ t' W
53 uses health checks—regularly making Internet requests to your 5 O% ]# ~4 G; M( y ^
application’s endpoints from multiple locations around the world—to 0 W# m R) ? O# K1 e$ f1 u
determine whether each endpoint of your application is up or down. </p> & z! S. Z: G0 p& n- C/ V0 ?. ]8 N
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer# Y- @% {; g3 w
itself and the health of your application running on the EC2 instances * ?6 f4 m! C8 j' C5 F( y# c
behind it. If any part of the stack goes down, Route 53 detects the # O4 O1 O# c' W, D9 p4 g
failure, routes traffic away from the load balancer, and directs traffic 9 h5 g7 L! C$ f+ i H) I# c
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2$ l+ m! h0 j! p8 H( O' P4 ?% @# i
endpoints as well as endpoints located in your own datacenter.</p> ! y6 u( i9 q. A) S
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<p>Using Route 53 DNS Failover, you can run your primary application ; q. y2 q1 h& K5 ~& S2 c5 H$ q
simultaneously in multiple AWS regions around the world. Route 53 0 @; L/ ~9 }% D& G, r
automatically removes from service any region where your application is & c. d- T) f* L8 K! L! `6 [$ g
unavailable. You can also take advantage of a simple backup site hosted ! K% ^2 Y$ J8 Y2 S0 \+ h5 S
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing * L7 t2 ^2 a( j" x3 t6 T9 c
users to this backup site in the event that your application becomes ' V) F/ P. i5 J
unavailable.</p>- W0 I$ u( [+ J0 C. P$ R
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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>* | y- }1 T5 @$ ?2 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>) k6 t3 T( {3 i
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<p>Sincerely,& g$ R3 h) l' ]& }7 A
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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& L$ j! N7 M* f4 G% V+ M7 W) v
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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
