Home / user-73537

Mridul Kashatria's questions

Martin Hope
Mridul Kashatria
Asked: 2012-04-09 22:30:22 +0800 CST
  • 1

I'm running 2 ec2 instances (ubuntu based) behind a load balancer. There seems to be a weird issue where the timestamps generated on these instances differ by 25 secs. This has lead to issues in our application where precise timing is involved.

I thought that the timestamps are supposed to be accurate and synchronized using NTP servers.

Is there any way I can ensure that servers have the timing in sync?

ubuntu amazon-ec2 time-synchronization
Martin Hope
Mridul Kashatria
Asked: 2011-12-28 23:50:54 +0800 CST
  • 4

I intend to reboot a running AWS instance which has been marked as unhealthy behind an ELB.

I have a setup where 2 instances are behind a Load Balancer and one of them contains lot of (>200 Gb) data in ephemeral store. The data is not important so I don't want to put it in S3 or EBS and pay for it but I don't want to lose it either.

Is there a way to tell load balancer to detect unhealthy instances and hard reboot them instead of terminating?

load-balancing amazon-web-services autoscaling
Martin Hope
Mridul Kashatria
Asked: 2011-07-04 03:05:29 +0800 CST
  • 7

I'm not sure if this is even possible but can I show the stdout of a linux command via webserver?

The command I want to run is echo 'status' | nc localhost 4730 which returns a string with status of the gearman job server.

$echo 'status' | nc localhost 4730
function1      0       0       0
function2      0       0       1

My server's running nginx. I want to open a URL like http://domain.tld/gearman-status and it should return the current status by running that command.

What should I put in the location block of nginx to do that?

location /gearman-status {
  ?
}

Thanks

nginx gearman