<p>Dear Amazon Web Services Customer,</p>1 e5 t3 T( x: M9 m
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<p>We are excited to announce that Route 53 DNS Failover now supports 0 N0 c" ~+ t& v9 E! L/ Z
Elastic Load Balancing (ELB) endpoints. Starting today, you can use - v+ o1 @; M: a. z; x1 {" \3 _
Route 53’s existing health checking and DNS failover features for . x" p9 \* R8 V7 ]
applications running behind an ELB, to increase redundancy and 4 _2 n$ X$ c+ t" A! ` ^( O( \2 ~" H
availability for these apps.</p>- y7 n9 [8 ^ A+ B0 [
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your ! A0 q' m, C( s( D
website and redirect your end users to alternate locations where your - J4 T& |, U) O2 }& l
application is operating properly. When you enable this feature, Route - B' r Q$ t. C& g# r' y2 T
53 uses health checks—regularly making Internet requests to your ) e8 t- D* G( N, m- o& y
application’s endpoints from multiple locations around the world—to ( y. G) t8 U( Y# r5 i# N2 A
determine whether each endpoint of your application is up or down. </p> 3 Q, C) O7 ]- w0 c6 E9 M
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer8 ^/ p0 |9 ]3 {6 }' P- H
itself and the health of your application running on the EC2 instances 5 O0 j9 Y6 s% d& K i$ b* r
behind it. If any part of the stack goes down, Route 53 detects the / g9 x: T& ^5 v) A
failure, routes traffic away from the load balancer, and directs traffic ' a: ] n6 | f' s& ~" c/ m" o. }
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC21 b3 w" q1 M5 P& l) t
endpoints as well as endpoints located in your own datacenter.</p>- }& b3 |( E6 T4 W0 u
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<p>Using Route 53 DNS Failover, you can run your primary application 6 W c* x, H" }5 F! x$ ? |
simultaneously in multiple AWS regions around the world. Route 53 " j% B$ x. k. O& j
automatically removes from service any region where your application is + q' h- z# \# {" X; y: C1 D
unavailable. You can also take advantage of a simple backup site hosted . Q/ S$ W5 g5 p. h
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing $ p$ j- P* F! O, c( J
users to this backup site in the event that your application becomes 3 I6 t$ @* C9 N! E u* ^' z
unavailable.</p># h# b) w" y6 U! h: u0 e: J
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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> 8 |& Y9 h( g! S* W/ ~$ g4 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> + u+ k3 L" m; V9 E% y
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<p>Sincerely, 8 {, z7 R: s C' b3 o( n5 Q
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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 0 Y& ], C0 c; V* z u7 p* p8 c& U% N) }
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
