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# Nginx 1.24 编译（Debian/Ubuntu 风格）
./configure \
  --prefix=/usr/local/nginx \
  --with-http_ssl_module \
  --with-http_stub_status_module \
  --with-pcre \
  --with-http_gzip_static_module \
  --with-stream \
  --with-stream_ssl_module \
  --add-module=../nginx_upstream_check_module

make && make install

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# Tengine 3.1 编译（额外启用 HTTP/2、realip、upstream_check）
./configure \
  --prefix=/usr/local/nginx \
  --with-http_ssl_module \
  --with-http_v2_module \
  --with-stream \
  --with-stream_ssl_module \
  --with-http_realip_module \
  --with-http_gzip_static_module \
  --add-module=../nginx_upstream_check_module

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# 1. 备份
mkdir -p /backup
rsync -av /usr/local/nginx/conf/cert /backup/
rsync -av /usr/local/nginx/conf/nginx.conf /backup/

# 2. 停止原服务（如有 HAProxy/keepalived 协同）
systemctl stop keepalived
systemctl stop nginx
systemctl stop nginxwebui

# 3. 卸载旧版
rm -rf /usr/local/nginx

# 4. 安装 Tengine（编译步骤见 3.1）

# 5. 还原备份
rsync -av --force /backup/nginx.conf /usr/local/nginx/conf/
rsync -av /backup/cert /usr/local/nginx/conf/

# 6. 启动
systemctl start keepalived
systemctl start nginx
systemctl start nginxwebui

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http {
    upstream backend_http {
        server {{BACKEND_1}}:8080;
        server {{BACKEND_2}}:8080;
        check type=http;
        check interval=5000 rise=2 fall=3 timeout=2000;
        check_http_send "GET /health HTTP/1.0\r\nHost: example.com\r\n\r\n";
        check_http_expect_alive http_2xx;
    }

    server {
        listen 80;
        location / {
            proxy_pass http://backend_http;
        }
    }
}

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stream {
    upstream backend_tcp {
        server {{MQTT_NODE_1}}:1883 fail_timeout=30s max_fails=3;
        server {{MQTT_NODE_2}}:1883 fail_timeout=30s max_fails=3;
        server {{MQTT_NODE_3}}:1883 fail_timeout=30s max_fails=3;
        server {{MQTT_NODE_4}}:1883 fail_timeout=30s max_fails=3;
        server {{MQTT_NODE_5}}:1883 fail_timeout=30s max_fails=3;
        server {{MQTT_NODE_6}}:1883 fail_timeout=30s max_fails=3;
        keepalive 32;
    }

    server {
        listen 1883;
        proxy_pass backend_tcp;
    }
}

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# 启动两个测试后端
docker run -d --name nginx1 --restart=always -p {{PORT_HTTP_1}}:80 nginx:latest
docker run -d --name nginx2 --restart=always -p {{PORT_HTTP_2}}:80 nginx:latest

# 访问状态页
curl http://{{STATUS_HOST}}:{{STATUS_PORT}}/status

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Nginx http upstream check status
Check upstream server number: 2, generation: 1
Index  Upstream  Name                          Status  Rise counts  Fall counts  Check type  Check port
0       cluster  {{HOST}}:{{PORT_HTTP_1}}  up      2            0            tcp          0
1       cluster  {{HOST}}:{{PORT_HTTP_2}}  up      2            0            tcp          0

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serverAddr = "x.x.x.x"
serverPort = 7000

[[proxies]]
name = "ssh"
type = "tcp"
localIP = "127.0.0.1"
localPort = 22
remotePort = 6000