<p>Dear Amazon Web Services Customer,</p>; a. n& U- X8 ]* y: n& [' D
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<p>We are excited to announce that Route 53 DNS Failover now supports 8 |- _1 U$ P' y; K9 t, P$ u
Elastic Load Balancing (ELB) endpoints. Starting today, you can use , H( T% j( D2 h8 Z& K/ j
Route 53’s existing health checking and DNS failover features for 9 |, Y- X( L7 H. q! W7 M4 S' T
applications running behind an ELB, to increase redundancy and 3 M; U5 d0 N5 e
availability for these apps.</p> 7 R0 J/ |3 Q: A& Z- i% z
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your . L! c( i4 l3 m% C8 R. [: b9 y' |
website and redirect your end users to alternate locations where your - a7 `5 s* m* I m5 D
application is operating properly. When you enable this feature, Route 2 P0 o! V2 r% ]( Z7 ]
53 uses health checks—regularly making Internet requests to your 4 v: _* W8 V" o' N! k, ~
application’s endpoints from multiple locations around the world—to ' m" l) I; ?! s; _
determine whether each endpoint of your application is up or down. </p>8 i. E6 E2 o# ]9 h* q' w( l9 Z' A% ~- t
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer , i& U+ F& P, M* m: c
itself and the health of your application running on the EC2 instances * Q; o* o) N) P2 B; G2 O% Z
behind it. If any part of the stack goes down, Route 53 detects the ; F, [+ r0 s- s
failure, routes traffic away from the load balancer, and directs traffic 8 I( f D: O' m# T; d
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 ' z t2 d1 x; a8 k) e" N6 F8 b6 R# R
endpoints as well as endpoints located in your own datacenter.</p> + ^# \% b( Y+ ?6 p( I
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<p>Using Route 53 DNS Failover, you can run your primary application & q- i' Z6 ^& r9 ]# P l
simultaneously in multiple AWS regions around the world. Route 53 % U8 A+ |7 U6 n
automatically removes from service any region where your application is $ Y2 }* C# i' n! P
unavailable. You can also take advantage of a simple backup site hosted & W& y# u$ U4 o% Q# S7 b
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing ' U4 f: N# q( E- K {2 h
users to this backup site in the event that your application becomes & H8 d& k, m+ H4 l) f. l7 g
unavailable.</p>+ x; z+ J% W; 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> $ F& r; h5 s( c& D
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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) M/ I% _. D4 V4 G- M) V; [' B
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<p>Sincerely, . s) v8 I2 b+ e2 J8 o' O5 p# d
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u- l; b' I& L7 d4 b* A
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& ~6 R6 b: H. Y' ^8 E. u- i2 m9 Y
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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
