<p>Dear Amazon Web Services Customer,</p>0 q% S5 l4 p. ~0 b& ~; h
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<p>We are excited to announce that Route 53 DNS Failover now supports # o; y8 o1 C" K! E6 C- f- B2 D, b
Elastic Load Balancing (ELB) endpoints. Starting today, you can use # r7 Q' _# a$ s5 j+ Y7 E
Route 53’s existing health checking and DNS failover features for ) E {, `1 w4 O. \/ s. s" ?2 b
applications running behind an ELB, to increase redundancy and 7 o$ _1 {0 h& H+ ^0 L
availability for these apps.</p> ! e/ H% f3 P: d9 @" g; }: j* i: r
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your . D5 E* W: R3 C8 p, x9 j/ r2 @
website and redirect your end users to alternate locations where your & z) Q+ P2 Q2 W2 w# z1 j! b
application is operating properly. When you enable this feature, Route 0 _" i* Q- f% Y6 P- R
53 uses health checks—regularly making Internet requests to your 2 Z& M" e# F- A+ s; V
application’s endpoints from multiple locations around the world—to 3 i, d$ J3 m) `
determine whether each endpoint of your application is up or down. </p>) r O3 V! ]1 k0 v
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer+ N$ s# l8 e$ {7 F2 F0 W" t
itself and the health of your application running on the EC2 instances - h; D/ P$ w# R* ?
behind it. If any part of the stack goes down, Route 53 detects the # Q1 J* y0 Y: c2 \- n; H' S
failure, routes traffic away from the load balancer, and directs traffic ) Q9 b! Q) V: a- \* K: S- _2 n
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2: C" F9 A$ d3 P8 S( Q6 Q8 z
endpoints as well as endpoints located in your own datacenter.</p> S; G4 H& g( E6 D2 ?) G+ _9 f
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<p>Using Route 53 DNS Failover, you can run your primary application 9 q f% D* H2 {4 w) y( K
simultaneously in multiple AWS regions around the world. Route 53 , n. O9 [* _2 p+ B+ K3 E
automatically removes from service any region where your application is 0 c, M; c7 B+ h+ V, d% j) A8 O; a; w
unavailable. You can also take advantage of a simple backup site hosted & [+ x4 e! a0 j' L" z; F3 Y
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing " c a7 D. }/ `
users to this backup site in the event that your application becomes ; f) ~/ R6 Q5 b/ G# I$ ~( o2 r6 g, e
unavailable.</p>* E8 \5 e8 S/ x( K3 l7 C# t
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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> 0 {5 M+ V; m5 I" O9 I
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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> 1 S! |1 u! q, d8 V3 a! y
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<p>Sincerely,& P5 a2 B5 K' n
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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 z/ f( ?7 C; L6 y2 y" s
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
