<p>Dear Amazon Web Services Customer,</p>1 `8 q, B% D) i' x1 F
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<p>We are excited to announce that Route 53 DNS Failover now supports ! [2 E8 D% ~9 x+ C6 w7 e
Elastic Load Balancing (ELB) endpoints. Starting today, you can use ' C8 y: z8 a! z2 y9 t6 p
Route 53’s existing health checking and DNS failover features for 6 B3 @$ l n7 k7 o# s
applications running behind an ELB, to increase redundancy and / _; Z8 l% B1 A+ Q/ p* v1 `( t
availability for these apps.</p>9 H9 `' i$ Z7 l# o, I7 k& {
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your E) f0 O/ Y; s2 ~( I
website and redirect your end users to alternate locations where your / J9 l/ v0 d! {: B6 b0 V& T
application is operating properly. When you enable this feature, Route . p1 I; A0 R! F- r, a) l/ |
53 uses health checks—regularly making Internet requests to your * a/ Y3 x5 X* C; C& r
application’s endpoints from multiple locations around the world—to 1 y9 @# t1 L2 q/ m4 m
determine whether each endpoint of your application is up or down. </p>- D7 x9 b+ b, B( j1 _2 F- N
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer % N$ f% ^) N2 w; t/ x
itself and the health of your application running on the EC2 instances 9 z* L4 x- H8 S) h- C- K
behind it. If any part of the stack goes down, Route 53 detects the , w4 t$ f) @' e3 o1 @# r$ Y
failure, routes traffic away from the load balancer, and directs traffic 1 [; P0 z1 b" I d$ u2 L
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC22 k! s: x, u3 B9 t' H# b
endpoints as well as endpoints located in your own datacenter.</p> % s: W( f) f! j" I1 v- W8 s
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<p>Using Route 53 DNS Failover, you can run your primary application 6 n1 V/ h5 f0 ~$ e$ X
simultaneously in multiple AWS regions around the world. Route 53 # V) f3 U# r( Q
automatically removes from service any region where your application is 2 f( b! K+ Y$ e R
unavailable. You can also take advantage of a simple backup site hosted 2 }8 X; F' q- G# T& b ]% f! o
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing * u4 z) P' y: D* y5 a" f- `5 b
users to this backup site in the event that your application becomes - x {: a: Z# O
unavailable.</p> 3 g& c$ g F) y- p
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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> ( q/ F( {+ \5 ]! N& L1 v
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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> , K8 w: K) _& t8 X
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<p>Sincerely,- L4 `: Q9 ?. k: m& t4 j5 G
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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 5 M) m9 a2 r0 }6 w% n- B6 H# {. Z+ s5 M* e5 {$ a! \7 f
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
