<p>Dear Amazon Web Services Customer,</p> $ j% U( Z, p9 I B
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<p>We are excited to announce that Route 53 DNS Failover now supports & a7 G D! w0 Z' r) t
Elastic Load Balancing (ELB) endpoints. Starting today, you can use $ [' M3 v& u o
Route 53’s existing health checking and DNS failover features for ( X- v' Q1 G0 j9 w
applications running behind an ELB, to increase redundancy and - J/ ~/ V2 O8 v% Z% Z: \
availability for these apps.</p>9 n& a1 v. p5 t. S' m3 M3 z5 {
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your - @4 R0 `* x% b4 I6 R2 K
website and redirect your end users to alternate locations where your 2 G4 i1 H5 g! @; K
application is operating properly. When you enable this feature, Route 9 l0 [ ^9 N( [
53 uses health checks—regularly making Internet requests to your ! D7 M3 a( H" t0 |
application’s endpoints from multiple locations around the world—to . t% G7 i/ m# A0 P+ o
determine whether each endpoint of your application is up or down. </p> & J) U# V: x+ x$ j3 L5 h0 X
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer/ _% A7 S& V* i; ]0 D' _. b& |
itself and the health of your application running on the EC2 instances 0 v7 B* z! P' d" {) r
behind it. If any part of the stack goes down, Route 53 detects the # ~4 e5 i4 e M
failure, routes traffic away from the load balancer, and directs traffic' S4 \8 s N- v# h9 s
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 ) @) p' ?4 B5 W" s( O$ O
endpoints as well as endpoints located in your own datacenter.</p> # ?( N* R: |$ e: J6 e& @
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<p>Using Route 53 DNS Failover, you can run your primary application 8 \4 r, x7 x; N" [; L3 n
simultaneously in multiple AWS regions around the world. Route 53 & p0 ]/ u" Z9 z9 ]# j: |
automatically removes from service any region where your application is 9 }( m+ i/ T& ^, _( E' ~
unavailable. You can also take advantage of a simple backup site hosted 9 s6 M0 r& \' X3 M7 Z& f y: ^, }7 x
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing , U& p7 Z' M) [1 y
users to this backup site in the event that your application becomes & w5 D6 V, _" Z# O0 a1 W5 U* E) E
unavailable.</p> ' X" {$ P& U, ~
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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>/ t2 o, x' i7 _# _' p# E! M
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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> 0 `" ^. `# K& ~0 ]
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<p>Sincerely, 8 i5 p3 k) d; [* B 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 : T: Z4 Y- g5 _ s; M/ W I. M5 q2 _
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
