tag:blogger.com,1999:blog-4836510665235566234.post237985944104322308..comments2024-03-12T21:55:49.079-07:00Comments on Cloud, Big Data and Mobile: Varnish Deployment Architectures in AWSHarish Ganesanhttp://www.blogger.com/profile/02069892404142116481noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-4836510665235566234.post-81717153377649832122013-10-08T23:25:31.932-07:002013-10-08T23:25:31.932-07:00My bad. It seems Route 53 indeed does health check...My bad. It seems Route 53 indeed does health checks if configured to do so.<br /><br />Thanks for the informative article.Anandnoreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-87020619580963437132013-10-08T23:03:22.284-07:002013-10-08T23:03:22.284-07:00Hi Harish,
Thanks for the reply.
I agree with your...Hi Harish,<br />Thanks for the reply.<br />I agree with your argument, but since Route 53 does not have health check, it can still direct some users to an HAProxy that is in an AZ that has gone down, right? These users will continue to face down time.<br /><br />AnandAnandnoreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-45903690362867130242013-10-08T11:01:44.752-07:002013-10-08T11:01:44.752-07:00Hi Anand,
There are 2 HAProxies deployed for high...Hi Anand,<br /><br />There are 2 HAProxies deployed for high availability across AZ failures. even if one HAproxy fails because of AZ failure, the other HAproxy deployed in alternate AZ will keep the site active.<br /><br />harishHarish Ganesanhttps://www.blogger.com/profile/02069892404142116481noreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-81201198268694180292013-10-08T07:01:13.507-07:002013-10-08T07:01:13.507-07:00In the last method, the HAProxy is also running on...In the last method, the HAProxy is also running on an EC2 instance, right? So it has to be in some AZ in the region, what if that AZ fails? In singapore there are 2 AZs & in if you deploy your HAProxy in AZ1 then you are protected against failure in AZ2 only, if AZ1 goes down there's not much you can do.Anandnoreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-14385962684907660682013-06-25T23:53:27.427-07:002013-06-25T23:53:27.427-07:00Great Article! Really Useful!Great Article! Really Useful!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-65839235777346932742012-09-14T11:33:20.744-07:002012-09-14T11:33:20.744-07:00ELB's also support autoscaling.ELB's also support autoscaling.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-84733804234173114832012-05-27T22:07:25.651-07:002012-05-27T22:07:25.651-07:00ELB can detect Instance Health.ELB can detect Instance Health.Romanhttps://www.blogger.com/profile/09191999407443819536noreply@blogger.comtag:blogger.com,1999:blog-4836510665235566234.post-2012822290347996722012-03-22T04:34:21.272-07:002012-03-22T04:34:21.272-07:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/17412395684389624626noreply@blogger.com