<p>Dear Amazon Web Services Customer,</p>& H5 }1 A) {' v. i# U/ k5 o
' O4 e( ?' z) a
<p>We are excited to announce that Route 53 DNS Failover now supports 1 q! {) p# ~ ]4 N' T# Z# i$ [
Elastic Load Balancing (ELB) endpoints. Starting today, you can use ! r3 L+ _( Y1 c! P! b
Route 53’s existing health checking and DNS failover features for 6 K/ T! X0 P# F, h9 J( c8 F
applications running behind an ELB, to increase redundancy and 8 C) E+ A; K- X; x. P* S
availability for these apps.</p>/ F% E: m* n4 W ]4 ~8 M! G Y" |
8 r* y$ c* h! ]3 H0 p! P# o. x7 ~" ?
<p>With DNS Failover, Amazon Route 53 can help detect an outage of your ; `4 I- k6 a# Y( _* z1 A6 t
website and redirect your end users to alternate locations where your . L( x9 H# I1 h; o1 a, N- ]! I
application is operating properly. When you enable this feature, Route ( l. J) o2 T! a
53 uses health checks—regularly making Internet requests to your $ j. N$ N7 @ P/ K7 F
application’s endpoints from multiple locations around the world—to $ U$ J P1 P/ |/ G4 A0 I8 u
determine whether each endpoint of your application is up or down. </p>9 y- a! g% N- e
( ]5 F8 f& s& V5 ]$ P7 p+ v
<p>For ELB endpoints, Route 53 evaluates the health of the load balancer5 L y8 G" r$ {' a7 F
itself and the health of your application running on the EC2 instances ( }6 L$ k$ G! k( u0 u
behind it. If any part of the stack goes down, Route 53 detects the 4 l( k5 \, b! T. h$ q. o
failure, routes traffic away from the load balancer, and directs traffic 0 ^9 \% [7 D9 W g0 _
to other healthy ELB endpoints. Route 53 DNS Failover also supports EC2 7 T1 s( x) I- r( c* w8 h& X( d- p3 {
endpoints as well as endpoints located in your own datacenter.</p> 8 n: N4 ]4 C. f- P4 X( N
, c; k" h% T& y2 P0 p3 s
<p>Using Route 53 DNS Failover, you can run your primary application $ A* u; B3 w9 w2 s/ N' ~
simultaneously in multiple AWS regions around the world. Route 53 9 E6 r3 N6 f3 F x
automatically removes from service any region where your application is , s. Y0 B, C" a* I1 j
unavailable. You can also take advantage of a simple backup site hosted ( f7 T! c1 ^# O9 m! Y( D3 z6 b
on Amazon Simple Storage Service (Amazon S3), with Route 53 directing % J& ~! T$ ~% w# g. j
users to this backup site in the event that your application becomes 2 y! \& ]8 f( _+ q7 b9 K
unavailable.</p> 7 L( ~; z* N5 N1 k+ U
1 A* L: a- }* i' ?
<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>) J' X' U6 x) c" u) p7 [
( M" Z6 j& Q! K; w( @
<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>$ C4 W( j7 [+ P. }( A4 k# W2 e
+ @* u: w, c0 j2 k7 ?0 R- S" G0 a
<p>Sincerely,: b3 P2 d3 e/ c( V* d) ]3 ?) |
6 W! V* c* g+ D8 y% E- ?9 S7 K
$ I) i7 X4 i1 |/ |$ T2 X2 C& t
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 & R7 T {& }+ P1 P& F5 n+ L . @+ V+ E6 v- ?- b( k% o
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
