<p>Dear Amazon Web Services Customer,</p>2 h, k! c" D( u2 w5 K; h
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<p>We are excited to announce that Route 53 DNS Failover now supports ) U2 H2 w' v) p9 e' x
Elastic Load Balancing (ELB) endpoints. Starting today, you can use 0 e- h* n3 D' I% o. K7 B
Route 53’s existing health checking and DNS failover features for 0 y$ @- E. R# A2 \2 C5 I& s
applications running behind an ELB, to increase redundancy and Z6 B# L2 {2 @5 L) D) [. y
availability for these apps.</p> : Y9 R' r3 M9 D R9 ~( V5 `+ i0 v8 c
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your ; S) ~3 @6 O }: q( G8 r/ I! [- b
website and redirect your end users to alternate locations where your 6 z+ g- x% f% k5 ]( K
application is operating properly. When you enable this feature, Route 2 u* V2 [! X7 Q( E0 W+ _
53 uses health checks—regularly making Internet requests to your . b% C& z1 j( F8 q8 n
application’s endpoints from multiple locations around the world—to + g* M; n! J2 s, q0 D- W- {. t
determine whether each endpoint of your application is up or down. </p>& o+ {7 w) ]: g6 `
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer 3 W3 x% u/ ^' N8 o2 G% h
itself and the health of your application running on the EC2 instances * ?% p$ k% M3 |) Q+ }! e3 N
behind it. If any part of the stack goes down, Route 53 detects the 4 E7 e( p1 i; \ a0 B
failure, routes traffic away from the load balancer, and directs traffic3 o' R- T3 g2 s
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 " A* Q8 J* e$ t* @
endpoints as well as endpoints located in your own datacenter.</p> " s, i+ m) A* e! L" Y& T2 {& v
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<p>Using Route 53 DNS Failover, you can run your primary application 0 K6 S; } s5 D5 y) O8 }# T( K
simultaneously in multiple AWS regions around the world. Route 53 b2 |( G( |4 |
automatically removes from service any region where your application is : b$ ^ ?% X2 z
unavailable. You can also take advantage of a simple backup site hosted . X7 ] Q- l7 Y; X1 q4 J
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing % [* F# s7 A# n* y
users to this backup site in the event that your application becomes 7 ~4 U4 u+ f- E9 |" |8 x
unavailable.</p>4 B. z: n5 E+ ?# X8 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>5 i C( ^/ g5 m/ 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>& J3 C8 \9 z; T3 a- 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
