<p>Dear Amazon Web Services Customer,</p>; Z5 K. u% H2 _& R. R
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<p>We are excited to announce that Route 53 DNS Failover now supports 4 C$ A+ C" d- P! o1 c' x! g$ P+ W
Elastic Load Balancing (ELB) endpoints. Starting today, you can use : a$ Q" H/ g5 K, y* n. N9 ]
Route 53’s existing health checking and DNS failover features for ' Q' ^1 G1 g3 b, O# w1 {+ |
applications running behind an ELB, to increase redundancy and . R! N! G% J2 _9 i4 W% ]2 E% U$ Y, Z
availability for these apps.</p>( z r. q4 g8 z- i1 R% M/ T3 e. Y( `
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<p>With DNS Failover, Amazon Route 53 can help detect an outage of your [! F- [& d7 ?
website and redirect your end users to alternate locations where your 2 O+ O9 {0 C9 f, X* W* Y9 @
application is operating properly. When you enable this feature, Route ' P; Y: p7 [2 x2 n+ K" t q3 i
53 uses health checks—regularly making Internet requests to your + F Z$ S4 q" B. q7 R
application’s endpoints from multiple locations around the world—to ! u! ^: d( |& N; j
determine whether each endpoint of your application is up or down. </p> % X8 o7 ~ L+ j% y3 v! P
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<p>For ELB endpoints, Route 53 evaluates the health of the load balancer : ^! p) Q8 T" |. S+ X' k
itself and the health of your application running on the EC2 instances * c+ b! E( a% N3 s. E
behind it. If any part of the stack goes down, Route 53 detects the / [/ J) h! z; P$ V( _
failure, routes traffic away from the load balancer, and directs traffic : J; ?9 ]0 w# l# V% ]/ l
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 ) @$ a0 t: ]& j; ]5 _6 j5 P
endpoints as well as endpoints located in your own datacenter.</p>: M# q% V; E f; R4 A
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<p>Using Route 53 DNS Failover, you can run your primary application 2 w$ I+ M6 ^0 F- v& X- v
simultaneously in multiple AWS regions around the world. Route 53 ) n2 y7 i+ s0 m. |1 h
automatically removes from service any region where your application is ) j( |( j0 |; w5 t5 Z
unavailable. You can also take advantage of a simple backup site hosted 9 \/ x* E) A2 ~1 |" ?
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing ; D" i8 Z6 n- v. a- T
users to this backup site in the event that your application becomes & z A! ~4 @8 a9 |
unavailable.</p> 4 d2 M0 c! {2 X3 G8 n
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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* K& {. q! v, j* M0 l" T! u
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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>6 c9 w! @& y) T, \: Z8 e& r ~2 m
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<p>Sincerely, L8 y: _( Z& t, v
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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" I$ ?6 r2 G4 I+ \! v: C, B ?
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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
楼主
