<p>Dear Amazon Web Services Customer,</p> ; I& q" N9 E+ i
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<p>We are excited to announce that Route 53 DNS Failover now supports + I" y3 V* [' i4 U/ t
Elastic Load Balancing (ELB) endpoints. Starting today, you can use ' p2 `7 w# C2 `7 T" d
Route 53’s existing health checking and DNS failover features for % }( ? n" [7 w& g
applications running behind an ELB, to increase redundancy and 3 x! s3 p# F* H& n Z: V6 B
availability for these apps.</p> 4 T8 \, V3 _, h# \2 {6 v- i2 U, U( f% A
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your 0 x6 {' f) Y/ k3 Z5 J* R
website and redirect your end users to alternate locations where your - W. b* ]6 q4 d, D
application is operating properly. When you enable this feature, Route ' l. B* ?, P- {+ o( M
53 uses health checks—regularly making Internet requests to your 8 ~: `7 J1 j( x6 P* o
application’s endpoints from multiple locations around the world—to % X. o# J" b/ _, N# b, b
determine whether each endpoint of your application is up or down. </p>5 X/ ]8 K% H' f& H& h% O _. Z
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer" R% W7 J6 U# r; o+ r( I9 Z) m# B
itself and the health of your application running on the EC2 instances 9 a" Z0 T( T: C
behind it. If any part of the stack goes down, Route 53 detects the , A) K) H! o( A: f# W
failure, routes traffic away from the load balancer, and directs traffic * W' j1 z* [0 W
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 + r; Z0 w+ X% t1 {. w6 s' Y
endpoints as well as endpoints located in your own datacenter.</p> ! v' V6 T. z8 y9 b: P
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<p>Using Route 53 DNS Failover, you can run your primary application 2 |, z& N+ j% e4 b' ]) I8 i
simultaneously in multiple AWS regions around the world. Route 53 0 `1 d. [, Z0 j t& {0 B
automatically removes from service any region where your application is ! {% r, X+ m4 i {
unavailable. You can also take advantage of a simple backup site hosted ! ~8 \- p) [- P7 Y; M1 q8 |9 I% |' ]
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing 8 H8 V/ d1 Q* Q- ^! Y& Y
users to this backup site in the event that your application becomes ; |0 c$ f& K# e2 a1 e4 n" U! l8 L
unavailable.</p>" E: ^0 m9 y+ g) ~- J H1 X
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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> v3 {5 @# q; h
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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> - ~% g% G. V. I0 g6 n8 O
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<p>Sincerely, " u4 p4 V4 J8 x8 ]
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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 @- Y4 Z$ }- @1 }* K; G3 K" U/ s7 N: O
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
