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----- Original Message -----

> From: "Benjamin Hindman" <benjamin.hind...@gmail.com>
> To: "dev" <d...@mesos.apache.org>, user@mesos.apache.org
> Sent: Monday, December 9, 2013 2:06:36 PM
> Subject: mesos and ec2

> If you don't use Mesos on EC2 then you can likely stop reading this email.

> When using Mesos on EC2 you might notice that the web UI seems broken. The
> two things we know about are:

> (1) You can't use '/master/redirect' on a master because it attempts to send
> you to the private IP hostname of the leading master (which obviously your
> browser can't connect to).

Why not use a simple detection mechanics: 

my_hostname=$(hostname -f) 

curl --connect-timeout 3 --silent http://169.254.169.254/2012-01-12 
if [ $? -eq 0 ]; then 
my_hostname=$(curl http://169.254.169.254/2012-01-12/meta-data/public-hostname) 
echo "Found EC2 public hostname: $my_hostname" 
fi 

> (2) You can't get information from the slaves (and thus, information about
> your tasks such as file download/tailing) because your browser tries to
> connect to the slave's private hostname.

same details as above. 

> We're trying to architect a clean fix for (1) in MESOS-672 . Feel free to
> follow along and please add any suggestions. In the mean time, the best
> solution that we know of is to modify /etc/hosts on the masters to resolve
> the public hostname from the private IP.

> For (2) you can set the --hostname flag on the slave to the public hostname.
> Within EC2 the public hostname will resolve to the private IP address so you
> won't be paying extra traffic fees but your browser will also be able to get
> the public IP address from the public hostname.

> Of course, don't forget to set up your security groups to make sure the
> master and slave port(s) are open (5050 and 5051 by default respectively).

> We plan to make these fixes less of a manual process in the future and would
> love to hear your suggestions!

> Thanks,

> Ben.

-- 
Cheers, 
Tim 

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