Openresty

cd /usr/local/openresty/nginx
mkdir modules && cd $_

root@root:/usr/local/openresty/nginx/modules$  tar xzvf openresty-ngx_http_datadog_module-<processor architecture>-<version>.so.tgz

# Load Module
load_module modules/ngx_http_datadog_module.so;

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    # Configure Datakit URL
    datadog_agent_url http://localhost:9529;
    # Configure Service Name
    datadog_service_name openresty-demo;
    # Configure Environment Name
    datadog_environment test;
    # Configure Version Name
    datadog_version 1.0.0;
    # Configure Sampling Rate 0-1.0
    datadog_sample_rate 1.0;
    # Configure Tags
    datadog_tag foo bar;

    include       mime.types;
    default_type  application/octet-stream;

    # Add trace_id and span_id to logs via $datadog_trace_id and $datadog_span_id, both in hexadecimal
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"'
                      '"$datadog_trace_id" "$datadog_span_id"';

    access_log  logs/access.log  main;

    sendfile        on;
    keepalive_timeout  65;

    server {
        listen       80;
        server_name  localhost;

        location / {
            root   html;
            index  index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

cd /usr/local/datakit/conf.d/ddtrace/
cp ddtrace.conf.sample ddtrace.conf

datakit service -R