[Observium] UNIX Agent

5 Dec 2015


      Hi all,
I'm currently trying to get the UNIX agent for Observium working with 
some of our hosts so that we can obtain more data for applications, 
primarily NGINX.
We are now seeing data on the agent execution time graph.
We are getting responses from the Observium host to the NGINX host via 
Telnet, and receiving information about NGINX.
We are getting the NGINX status information through Lynx on the 
localhost.
We are using the following configs.
/etc/xinetd.d/observium_agent_xinetd
service observium_agent
{
type = UNLISTED
port = 36602
socket_type = stream
protocol = tcp
wait = no
user = root
server = /usr/bin/observium_agent
# configure the IPv[4|6] address(es) of your Observium server here:
only_from = [IPs removed] 127.0.0.1 ::1
# Don't be too verbose. Don't log every check. This might be
# commented out for debugging. If this option is commented out
# the default options will be used for this service.
log_on_success =
disable = no
}
/usr/lib/observium_agent/local/nginx
!/usr/bin/env python
import urllib2
import re
data = urllib2.urlopen('http://localhost/nginx-status%27).read()
params = {}
for line in data.split("\n"):
smallstat = 
re.match(r"\s?Reading:\s(.*)\sWriting:\s(.*)\sWaiting:\s(.*)$", line)
req = re.match(r"\s+(\d+)\s+(\d+)\s+(\d+)", line)
if smallstat:
params["Reading"] = smallstat.group(1)
params["Writing"] = smallstat.group(2)
params["Waiting"] = smallstat.group(3)
elif req:
params["Requests"] = req.group(3)
else:
pass
dataorder = [
"Active",
"Reading",
"Writing",
"Waiting",
"Requests"
]
print "<<<nginx>>>\n";
for param in dataorder:
if param == "Active":
Active = int(params["Reading"]) + int(params["Writing"]) + 
int(params["Waiting"])
print Active
else:
print params[param]
/etc/nginx/sites-automatic/localhost.conf
server {
     listen 80;
     listen [::]:80;
     server_name localhost;
     server_name_in_redirect off;
charset utf-8;
log_not_found on;
     access_log /var/log/nginx/localhost_combined-access.log combined 
buffer=128k flush=5m;
     error_log /var/log/nginx/localhost_error.log;
location / {
         root /local-storage/localhost/nginx-hosted/public_html;
     }
location /nginx-status {
         stub_status on;
         access_log   off;
         allow 127.0.0.1;
         allow ::1;
         deny all;
     }
}
Any help with this would be much appreciated.
Where can we expect to see logs? Any tips on how we can resolve this?
Regards,
Alex.

[Observium] UNIX Agent

Alex Winder ＠ M5i