代理四层 TCP/IP 协议，报 unknown directive "stream" in /etc/nginx/nginx.conf 错误

// 安装 nginx

$ yum -y install nginx

// 代理 rancher 四层协议

$ vim /etc/nginx/nginx.conf
worker_processes 4;
worker_rlimit_nofile 40000;

events {
    worker_connections 8192;
}

stream {
    upstream rancher_servers_http {
        least_conn;
        server 192.168.10.201:80 max_fails=3 fail_timeout=5s;
        server 192.168.10.202:80 max_fails=3 fail_timeout=5s;
    }
    server {
        listen 80;
        proxy_pass rancher_servers_http;
    }

    upstream rancher_servers_https {
        least_conn;
        server 192.168.10.201:443 max_fails=3 fail_timeout=5s;
        server 192.168.10.202:443 max_fails=3 fail_timeout=5s;
    }
    server {
        listen     443;
        proxy_pass rancher_servers_https;
    }
}

//启动 nginx 报错

$ systemctl start nginx
$ systemctl status nginx
...
Jan 31 15:52:06 c710239.xiodi.cn nginx[20266]: nginx: [emerg] unknown directive "stream" in /etc/nginx/nginx.conf:8
Jan 31 15:52:06 c710239.xiodi.cn nginx[20266]: nginx: configuration file /etc/nginx/nginx.conf test failed
...

// 缺少模块

$ yum -y install nginx-mod-stream
$ vim /etc/nginx/nginx.conf      // 载入模块
load_module /usr/lib64/nginx/modules/ngx_stream_module.so;
worker_processes 4;
worker_rlimit_nofile 40000;
...

$ systemctl start nginx