# nginx Server Configuration

# Verify that ngx_http_stub_status_module is Present

nginx -V 2>&1 | grep -o with-http_stub_status_module

If the output contains the module name, the module is installed.

If the response is empty, upgrade to a newer version of nginx or recompile your nginx server with the -with-http_stub_status_module option.

Sample nginx -V output:

$ nginx -V
nginx version: nginx/1.4.6 (Ubuntu)
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04)
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_spdy_module --with-http_sub_module --with-http_xslt_module --with-mail --with-mail_ssl_module

# Configure Status Page

Open the nginx.conf file and review the configuration example provided in nginx documentation.

sudo nano /etc/nginx/nginx.conf

Enable the page on the /nginx_status URL to access <your_server_address>/nginx_status.

location /nginx_status {
    stub_status;
}

Reload the server to apply changes:

sudo nginx -s reload

Verify that status page is accessible by opening <your_server_address>/nginx_status:

Active connections: 291
server accepts handled requests
 16630948 16630948 31070465
Reading: 6 Writing: 179 Waiting: 106

# Restrict Access to the Status Page

Once you verify that the status page is enabled, restrict access to this page only to the IP address of the server where Axibase Collector is installed.

Add the following lines at the beginning of the location /nginx_status directive:

allow <collector_ip_address>;
deny all;

For example, if your Collector is installed at 192.0.2.1, the configuration appears thus:

location /nginx_status {
    allow 192.0.2.1;
    deny all;
    stub_status;
}

Reload the server:

sudo nginx -s reload

Repeat the process for each nginx server that you want to monitor.