CDR export configuration

CDR export feature allows operator to unload CDR from database to CSV file. Yeti uses PostgreSQL COPY method for CSV generation, so the file will be saved by PostgreSQL daemon.

CDR export download link

Yeti Web interface uses Nginx X-Accel-Redirect mechanism to provide file download. Web interface responds on download request with 200Ok with header X-Accel-Redirect: /x-redirect/cdr_export/4.csv. Nginx should be configured to handle this redirection properly.

CDR database and yeti-web on the same server

Edit /etc/nginx/sites-enabled/yeti-web and replace /x-redirect/cdr_export with the following content:

location /x-redirect/cdr_export {
    internal;
    alias /tmp;
}

Where /tmp is the storage directory defined in /opt/yeti-web/config/yeti_web.yml:

cdr_export:
    dir_path: "/tmp"

Warning

You can use any directory as cdr_export dir_path but this directory should be writable by postgres system user and readable by www-data system user.

Restart nginx service:

# systemctl restart nginx

CDR database and yeti-web located on different servers

Configure nginx on WEB interface server

Edit /etc/nginx/sites-enabled/yeti-web and replace /x-redirect/cdr_export with the following content:

location /x-redirect/cdr_export {
    internal;
    proxy_pass http://<CDR SERVER ADDRESS>:8080;
}

Where <CDR SERVER ADDRESS> is IP address of remote CDR database server.

Configure nginx on CDR database server

Install nginx package and add the next server block to /etc/nginx/nginx.conf:

server {
        listen 8080;
        server_name _;
        root /tmp;

        allow <WEB INTERFACE SERVER ADDRESS>/32;
        deny all;

        location /x-redirect/cdr_export {
                alias /tmp;
        }
}

Where /tmp is cdr_export dir_path from /opt/yeti-web/config/yeti_web.yml config file and <WEB INTERFACE SERVER ADDRESS> is IP address of your web interface server.

Warning

Make sure you configure allow/deny ACL properly. Wrong nginx configuration will cause data leak especially if CDR server uses public IP address(we recommend using private IP for CDR db server).

Restart nginx service:

# systemctl restart nginx