Nginx Status Check

Troubleshooting
1

Hello! we are adding nginx to our check_mk Enterprise 1.6.0 p5, nginx is not appearing in the services list on the desired host.

we followed the following tutorial:

i’m running the plugin nginx_status from on the host i’m getting the following error:

Exception (127.0.0.1:443): hostname ‘127.0.0.1’ doesn’t match either of ‘*.x.com’, ‘x.com’

my nginx_status.conf is the following:

servers = [
{
“protocol” : “http”,
“address” : “127.0.0.1”,
“port” : 80,
},
]

2

My fix should help you out:

3

If your nginx doesn’t listen http (e.g. 127.0.0.1 port 80), if it’s only SSL, then the subject needs to be fully qualified in order to match the certificate presented SSL wise.

4

Hello @cjcox and @mace,
@cjcox Yep i know the what is the reason and nginx is listening on both HTTP and HTTPS, but i need a way to bypass it because it’s not logical …, @mace i tried your pull request the error is gone but the plugin is not returning any data, even tho if i do wget -qO - http://127.0.0.1/nginx_status

the answer is:

Active connections: 20
server accepts handled requests
130935 130935 196748
Reading: 0 Writing: 1 Waiting: 19

the output of the script is:

./nginx_status
<<<nginx_status>>>

5

Hi ziad,

I will show an example of my configuration:

  1. Create a server section in /etc/nginx/sites-enabled/default
    (Path can be different. I use the default path for that)

server {
listen 8081;
listen [::]:8081;

server_name _;

root /var/www/html;
index index.html;

location /nginx_status
{
stub_status on;
access_log off;
allow 127.0.0.1;
deny all;

}
}

  1. Create the config file in /etc/check/nginx_status.cfg

#Example configuration for NGNIX plugin
#If you do not supply a configuration file then autodetection
#is being tried.

servers = [
{
“protocol” : “http”,
“address” : “127.0.0.1”,
“port” : 8081,
“page” : “nginx_status”,
}
]

  1. Testing

/usr/lib/check_mk_agent/plugins/nginx_status
<<<nginx_status>>>
127.0.0.1 8081 Active connections: 1
127.0.0.1 8081 server accepts handled requests
127.0.0.1 8081 74 74 74
127.0.0.1 8081 Reading: 0 Writing: 1 Waiting: 0

I hope it helps

BR

Anastasios

6

Hello,

Found the issue the script was trying to auto discover nginx on localhost:443 and not localhost:80, even tho the configuration in nginx is on port 80.

It was not noticing the nginx_status.cfg because i was calling it nginx_status.conf lol… devs… some wants to call the file cfg and other wants to call it conf and we system engineers have to suffer :rofl:

Thanks for the help anyway!!!

1 Like
7

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