<p>Dear Amazon Web Services Customer,</p>! u& {! v j. o+ e, r( U
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<p>We are excited to announce that Route 53 DNS Failover now supports N8 M9 R3 w9 u4 N# K7 Q3 f
Elastic Load Balancing (ELB) endpoints. Starting today, you can use ) }! e9 o; N0 v, A& @& [2 h
Route 53’s existing health checking and DNS failover features for + Z6 [- g4 b# m. H- b' E2 b3 t
applications running behind an ELB, to increase redundancy and 5 s/ D' G% \5 Z+ Z
availability for these apps.</p> : t7 u& ?6 Q* H+ `1 Q7 ~9 R
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your 3 L- O3 G. X4 o- m
website and redirect your end users to alternate locations where your 9 m( ?2 L4 w4 c! m2 S
application is operating properly. When you enable this feature, Route * t, I+ V3 r4 b% g5 |# Y
53 uses health checks—regularly making Internet requests to your ! C) F- L; w& ^2 B
application’s endpoints from multiple locations around the world—to * w* y; a D6 @
determine whether each endpoint of your application is up or down. </p> ! w: m- a) T- J# J
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer Y! z" F) ?& ^. |5 j0 b0 `
itself and the health of your application running on the EC2 instances ) ^/ x+ L: Y7 u& P/ d S
behind it. If any part of the stack goes down, Route 53 detects the , @- Y9 N( T8 V: D+ ?! E
failure, routes traffic away from the load balancer, and directs traffic - x' i) x7 p4 @* }3 j! a
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 1 F! Z6 V9 K! d( a9 {3 T
endpoints as well as endpoints located in your own datacenter.</p>+ a! C/ F: N# s/ o* H8 L, D7 ?% c% ]
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<p>Using Route 53 DNS Failover, you can run your primary application # a9 U, u P7 ]4 Q1 K; ^
simultaneously in multiple AWS regions around the world. Route 53 , V& Q' ~# a, ?0 i; y
automatically removes from service any region where your application is 8 _8 |; _: W Y( Z9 l' d
unavailable. You can also take advantage of a simple backup site hosted 0 O0 R# _& O; p1 `& j0 y& Y
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing , o- w8 C0 Q+ H5 i
users to this backup site in the event that your application becomes $ y# ?$ v7 }' r
unavailable.</p>( \+ K- v% r9 L- T
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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> ( e+ @% e1 \( W- F# l! w
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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>$ h5 i8 e( s; X/ m x v
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
