<p>We are excited to announce that Route 53 DNS Failover now supports , ^1 q1 u' n# R
Elastic Load Balancing (ELB) endpoints. Starting today, you can use W3 k+ ]; _" C
Route 53’s existing health checking and DNS failover features for # j ~8 e7 a Q4 A, B8 h
applications running behind an ELB, to increase redundancy and 2 s, U4 z2 c. P3 m* I" t
availability for these apps.</p>& Z+ }2 r9 T' H7 Q% r7 {
% b; s% }6 ~# M! K
<p>With DNS Failover, Amazon Route 53 can help detect an outage of your 9 @7 g: ]* C. U2 Q V
website and redirect your end users to alternate locations where your ) H5 o( Q$ k+ `9 ?- Y, F. e
application is operating properly. When you enable this feature, Route 1 k5 m$ H& n1 i+ n
53 uses health checks—regularly making Internet requests to your . \# A0 U, i k5 x- q# L
application’s endpoints from multiple locations around the world—to " u$ `5 j" h2 l- O; S1 A; j+ W! Q. q
determine whether each endpoint of your application is up or down. </p> * O2 X/ @) ~& f5 D
3 V" R. |$ G6 q. Y+ a3 a, D
<p>For ELB endpoints, Route 53 evaluates the health of the load balancer$ Y+ f; ]7 ]) u0 v5 S$ m/ p
itself and the health of your application running on the EC2 instances ! l, L7 z+ v- Q8 Q
behind it. If any part of the stack goes down, Route 53 detects the ' f8 v3 K3 G* @" ^! f- _# S
failure, routes traffic away from the load balancer, and directs traffic& y0 C: |1 z9 W" H9 J/ P! E
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 4 C5 |3 j' h1 ?; S! h7 X
endpoints as well as endpoints located in your own datacenter.</p> a& Y6 k1 \- Z. a
* q% y3 ^/ Q' V9 [; G. E E
<p>Using Route 53 DNS Failover, you can run your primary application 7 X/ D# Y6 W4 x' C( E
simultaneously in multiple AWS regions around the world. Route 53 ' T3 ?8 `1 }. R$ X: l
automatically removes from service any region where your application is ! Q0 m1 p! ]7 V2 ?' E
unavailable. You can also take advantage of a simple backup site hosted $ c2 ~( b2 b: d) W r6 k
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing 1 z/ G$ R- J* ~
users to this backup site in the event that your application becomes : a0 f e7 I5 \5 u# a
unavailable.</p> 0 b+ n+ X; ?- ?3 }
8 d( ^$ R. Y2 t6 z3 }' c) d9 _
<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>$ g! X, I* j z
3 ~; U( m) o0 f
<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>& r) S- t a0 ^- p7 l
6 i( p7 d) Q9 U1 t5 }
<p>Sincerely,' @3 R9 B+ B8 J# Q
$ T5 W- W) S) x; Y
& k: r% A. W6 J) S# P
The Amazon Web Services Team</p>
复制代码
对于使用route53的同学是个好事，简单的 geo dns + failover) c9 D7 Q0 X: _" _0 J0 w: g
8 L$ s. T5 d/ e, z; K
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
