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Re: monit with nginx

From: B. Cook
Subject: Re: monit with nginx
Date: Tue, 26 Oct 2010 10:29:40 -0400
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv: Gecko/20101013 Lightning/1.0b2 Thunderbird/3.1.5

Your nginx config is blocking 'ip requests' for hostnames. (looks like you followed the 'calomel' tutorial.. )

you would need to ask for the http 1.1 host(s) you are running.

like this:

  if failed host port 80 protocol http

On 10/26/10 6:53 AM, Derek wrote:
The access log shows this

Monit 4.10.1
ip.removed - - [26/Oct/2010:23:46:58 +1300] "GET / HTTP/1.1" 400 173 "-"

Monit 5.0.3
ip.removed - - [26/Oct/2010:23:47:54 +1300] "GET / HTTP/1.1" 200 151 "-"

Just ngrep'ed the GET requests to nginx.

Monit 4.10.1
GET / HTTP/1.1..Host: ..Accept: */*..Connection: close..User-Agent:

Monit 5.0.3
GET / HTTP/1.1..Host: */*..Connection:
close..User-Agent: monit/5.0.3....

It looks like the IP/domain is left from the Host: area of the GET
request on monit 4.10.1

I'm not that much of a http protocol guru - does this help find the cause.

Not lenny-backports packages for monit on debian.. might have to compile
up a new version for my servers,


On 26/10/10 11:00 PM, Ant�nio P. P. Almeida wrote:
On 26 Out 2010 10h33 WEST, address@hidden wrote:

[1<text/plain; ISO-8859-1 (8bit)>]
Thanks for the reply,

I'm using this monit instance to check other nginx servers for
availability, so this is done all remotely using public IP's.
You can also use the hostname.

There are local checks running on each web server to monitor nginx
locally also, this was using a tcp check on port 80. However I
updated the local checks to your line below (if failed port 80
protocol http then restart). This also gave the 400 back using
Hmmm. 400 is bad request. What do you see in Nginx logs?

In both cases the syslog shows..

HTTP error: Server returned status 400

'' failed protocol test [HTTP] at
INET[123.456.789.10:80] via TCP

What version of monit are you running?
I'm running monit 5.2.1 and nginx 0.8.53.

--- appa

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