Nginx RTMP exec指令无报错但不执行脚本问题咨询

请问是否有方法可以在直播流完成ts切片生成时触发执行脚本？或是在用户连接、开始/停止观看直播流时触发执行对应脚本？

根据NGINX RTMP EXEC 指令官方文档说明：

该类指令用于指定在每次流发布时执行带参数的外部命令，流发布停止时对应进程会被终止，第一个参数需填写二进制文件的完整路径，不对进程的功能做强制限制，常配合ffmpeg实现流转码。

按照文档配置后，所有exec类指令均未触发执行，且/var/log/nginx/error_log中无任何相关错误日志，现寻求排查建议。

注：出于后续业务规划，特意将Nginx运行用户设置为apache而非nginx，当前系统中并未运行apache服务，因此用户名配置不应成为问题诱因。

现有操作与环境说明 #

• 推流逻辑：通过Windows笔记本向远端服务器推流，推流命令如下，推流功能正常，服务器的/efsr/5/nginx/hls/teststream路径下可正常生成index.m3u8索引文件和ts切片文件：

ffmpeg.exe -re -i movie.mp4 -c:v libx264 -b:a 128k -crf 23 -strict experimental -f flv rtmp://x.x.x.x:1604/live/teststream

• 测试脚本权限：所有exec类指令均调用同一个测试脚本，脚本权限信息如下：

$ ls -ld /efsr/5/nginx/scripts/nginx_publish_done.sh
-rwxr-xr-x 1 apache apache 66 Jul 12 20:01 /efsr/5/nginx/scripts/nginx_publish_done.sh

• 测试脚本内容：仅实现将当前时间追加写入临时文件的简单逻辑：

$ cat /efsr/5/nginx/scripts/nginx_publish_done.sh
#!/usr/bin/bash

/bin/date >> /tmp/nginx_publish_done.tmp

exit 0

• 配置校验结果：已通过nginx -t校验配置文件，无语法错误：

# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

• 已尝试的指令写法：配置校验无错，但尝试多种exec指令写法均无法触发脚本执行，示例写法如下：

exec_publish bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh 1";
exec_publish bash -c /efsr/5/nginx/scripts/nginx_publish_done.sh 1;
exec_publish /efsr/5/nginx/scripts/nginx_publish_done.sh 1;

完整配置与版本信息 #

nginx.conf 完整配置 #

worker_processes  auto;
user apache;
events {
    worker_connections  1024;
}

http {
    server {
        listen 8080;
        root /var/www/nginx/hls;

        location / {
            index index.html index.htm index.m3u8;
        }
    }
}

# RTMP configuration
rtmp {
        max_connections 200;

        live on;
        meta copy;
        interleave on;
        wait_key on;
        idle_streams on;

        # HLS配置
        hls on;
        hls_type live;
        hls_path /efsr/5/nginx/hls;
        hls_fragment 10s;
        hls_playlist_length 1440m;
        hls_fragment_naming system;
        hls_nested on;
        hls_continuous on;

    server {
        listen 1604;
        chunk_size 4096;
        buflen 8000ms;

        application live {
                live on;
                wait_key on;
                wait_video on;
                publish_notify on;

                exec_publish bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh 1";
                exec_publish_done bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh 2";
                exec_play bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh 3";
                exec_play_done bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh  4";
                exec_pull bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh  5";
                exec_push bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh  6";
                exec_record_done bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh  7";
                exec_static bash -c "/efsr/5/nginx/scripts/nginx_publish_done.sh  8";

                record off;
                record_path /var/www/nginx/record;
                record_suffix -%F.flv;
                record_unique on;
                record_interval 15m;
                record_max_size 100M;
        }
    }
}

Nginx版本与编译参数 #

# nginx -V
nginx version: nginx/1.23.1 (CentOS)
built by gcc 7.3.1 20180712 (Red Hat 7.3.1-15) (GCC)
built with OpenSSL 1.1.1q  5 Jul 2022
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx
--sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --user=apache --group=apache --build=CentOS --add-module=/usr/local/src/nginx-rtmp-module --with-select_module --with-poll_module --with-threads --with-file-aio --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module --with-http_image_filter_module --with-http_geoip_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_auth_request_module --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_slice_module --with-http_stub_status_module --with-mail --with-mail_ssl_module --with-stream --with-stream_ssl_module --with-stream_realip_module --with-stream_geoip_module --with-stream_ssl_preread_module --with-compat --with-pcre --with-pcre-jit --with-zlib=/usr/local/src/zlib-1.2.12 --with-openssl=/usr/local/src/openssl-1.1.1q --with-openssl-opt=no-nextprotoneg --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --with-debug

内容的提问来源于stack exchange，提问作者Ran Bo