<p>Dear Amazon Web Services Customer,</p>. Q& O/ a0 ^$ K% g5 F
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<p>We are excited to announce that Route 53 DNS Failover now supports ) j4 P" Q6 M$ C, a! ~
Elastic Load Balancing (ELB) endpoints. Starting today, you can use 6 J* {. z M- K
Route 53’s existing health checking and DNS failover features for N9 q7 Z" C# l: l
applications running behind an ELB, to increase redundancy and 9 B! _' X- h! j2 f3 D
availability for these apps.</p>9 I0 `$ C: A8 _7 \5 [ u, C
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your . b6 i& k! }) [) @9 e5 K/ s' Y$ e
website and redirect your end users to alternate locations where your 6 G% T+ G& m' m! Z3 j: l' {4 c
application is operating properly. When you enable this feature, Route & g; A: r1 V; X8 i4 i3 ^
53 uses health checks—regularly making Internet requests to your ! w3 `' G/ r4 w. o+ v
application’s endpoints from multiple locations around the world—to 2 R+ J% r8 L. {3 L; y2 R; l+ H
determine whether each endpoint of your application is up or down. </p> % C+ d s" L5 y6 O1 o) [
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer 4 l& }% Z- Z* ]$ Q; x/ w8 U6 H) ?8 a
itself and the health of your application running on the EC2 instances , s/ d* ^7 B7 {
behind it. If any part of the stack goes down, Route 53 detects the 6 n( w) k% B* n) ~: a9 j
failure, routes traffic away from the load balancer, and directs traffic ( L6 u# m$ K/ v/ L z' z: _
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC24 O) \( @/ I) c0 V* l$ x
endpoints as well as endpoints located in your own datacenter.</p> w5 v3 I: u- g
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<p>Using Route 53 DNS Failover, you can run your primary application 2 K0 e2 [: @7 \) U8 {0 x L
simultaneously in multiple AWS regions around the world. Route 53 , O; I$ r: o3 j& F
automatically removes from service any region where your application is 5 k6 K5 O1 T4 n9 A% }- T
unavailable. You can also take advantage of a simple backup site hosted 5 B- c3 H8 X: s0 a- c
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing 0 k! P$ z2 f6 y6 x
users to this backup site in the event that your application becomes - e; u8 O5 V8 S5 M7 k
unavailable.</p> 9 }& w1 M) @( P0 ?$ C0 }6 Q
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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 E7 F# T3 x0 O5 O
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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>. m: V% Q0 [; M2 _0 |8 }. t
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<p>Sincerely, : `- E d: T" S( U8 b
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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% z: V% b: x& h$ |* y. h
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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
