[ec2] Nagios Issue

[James Mayes]

Hi Micah,

I'm curious to know if you really need to monitor Amazon's gateway.   
We use Nagios to monitor about 10 instances in our setup and do not  
monitor any hardware which falls exclusively under Amazon's control.   
That is, if it was truly down we would see that our services were down  
for the impacted instances anyway and I'm not sure that Amazon  
wouldn't already know about the problem.

Just a thought!

Also, since the default host check for nagios is usually an ICMP-based  
ping check, are you certain that your gateway allows pings?  I'll  
check when I get into the office.

James

On May 11, 2009, at 8:04 AM, Micah Walter wrote:

> Hi,
> As mentioned in a previous email I am having some issue with  
> installing Nagios. Everything seems to work just fine, but Nagios is  
> reporting that my gateway is down. When I ping the gateway manually  
> I also see it as being down.
>
> At first I thought this was either one of two problems. 1) There is  
> some reason why an EC2 instance would not have an actual "gateway."  
> 2) There was something wrong with my instance configuration.
>
> So, I started up a new instance based on the most recent 8.10 AMI. I  
> installed Nagios3 using the following commands and when I logged in  
> the same thing was happening--gateway down.
>
> sudo apt-get install nagios3
> cd /etc/nagios3
> sudo htpasswd -c htpasswd.users nagiosadmin
>
> Has anyone else ran into this problem? For what it's worth, the  
> instance seems to working just fine, and Nagios is reporting  
> everything else up and running smoothly. So, I am mostly curious  
> about how the EC2 "gateway" is set up and why it would be  
> unreachable...
>
> Any thoughts?
>
> Micah
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