<p>Dear Amazon Web Services Customer,</p>/ o1 A5 _. T/ A3 T4 T4 U
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<p>We are excited to announce that Route 53 DNS Failover now supports ) r" y4 t& O& h" P& I
Elastic Load Balancing (ELB) endpoints. Starting today, you can use ( b9 x% s/ v$ k h! l' d9 I
Route 53’s existing health checking and DNS failover features for : r( i. e' Z& w
applications running behind an ELB, to increase redundancy and $ C7 z5 b: K8 C1 I/ I
availability for these apps.</p> & p4 C; l H( X! Z0 j( b$ W
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your ! j( |3 _. n* E
website and redirect your end users to alternate locations where your ! |" m4 s6 n5 h, e" V8 K$ c' Y
application is operating properly. When you enable this feature, Route 0 B9 M6 j7 b Z0 m! n- k L9 u
53 uses health checks—regularly making Internet requests to your - q7 ]% ?6 [( s6 i, j
application’s endpoints from multiple locations around the world—to ; D i) @1 X1 c j
determine whether each endpoint of your application is up or down. </p> ' v: X- U, |( b, E, V) R8 Q
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer I2 @! r7 \7 H* J5 f' Y9 s8 i1 ?
itself and the health of your application running on the EC2 instances ; ?" s5 z1 U- ^8 e/ K- w
behind it. If any part of the stack goes down, Route 53 detects the 6 b( ?. O4 [7 y6 e8 D
failure, routes traffic away from the load balancer, and directs traffic0 t+ r6 Z7 K) }! T' A$ y4 d
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 0 L8 L) ^. {" @% f9 A
endpoints as well as endpoints located in your own datacenter.</p> 0 P( P0 k2 M: a% E0 g8 \. U
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<p>Using Route 53 DNS Failover, you can run your primary application " n; K0 B4 a L. N( d+ R U# K
simultaneously in multiple AWS regions around the world. Route 53 + F$ k$ Q1 W! {& j) P( l' N7 r: ~
automatically removes from service any region where your application is / _1 [9 T9 w2 J
unavailable. You can also take advantage of a simple backup site hosted : f" u+ D& l A& i6 C# T( D, E
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing . O2 d! z/ T* }
users to this backup site in the event that your application becomes 9 P# M; _( A G8 n* B B
unavailable.</p> 1 d" p" _1 h3 _+ k, r5 E) B- d
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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> 4 M6 `7 g& Q- `5 ~1 ]- U" G
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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> 7 |0 D% G+ S! t, h+ a
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<p>Sincerely, ' [# x% r' }0 }# _# o) w6 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, x- o8 T* H( h# n7 }: W
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
