无法使用 Nginx 反向代理节点后端

Question

我正在 AWS EC2 上使用 Angular11 + NodeJS。

我正在尝试使用 nginx 设置反向代理。

nginx：

server {
    listen 80;
    listen [::]:80;
    server_name http://MY-AWS-IP.com;
    root /home/ubuntu/dashboard/frontend/dist/frontangular;
    server_tokens off;
    index index.html index.htm;

location /auth/ {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
location /groceries/ {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }

}

节点：（在 pm2 上运行）

... Some stuff
const ports = process.env.PORT || 3000;

app.use("/groceries", groceryRoutes);
app.use("/auth", loginRoutes);

app.listen(ports, () => console.log(`listening on port ${ports}`));

尝试登录@主页时：

错误：

POST http://localhost:3000/auth/login net::ERR_CONNECTION_REFUSED
ERROR 
kd {headers: dd, status: 0, statusText: "Unknown Error", url: "http://localhost:3000/auth/login", ok: false, …}
error: ProgressEvent {isTrusted: true, lengthComputable: false, loaded: 0, total: 0, type: "error", …}
headers: dd {normalizedNames: Map(0), lazyUpdate: null, headers: Map(0)}
message: "Http failure response for http://localhost:3000/auth/login: 0 Unknown Error"
name: "HttpErrorResponse"
ok: false
status: 0
statusText: "Unknown Error"
url: "http://localhost:3000/auth/login"
__proto__: wd

我根本不了解这个反向代理，我想我应该指出我的应用程序路线。 谢谢！

Answer 1

你只需要这么多：

server {
    listen 80;
    listen [::]:80;
    server_name http://MY-AWS-IP.com;
    root /home/ubuntu/dashboard/frontend/dist/frontangular;
    server_tokens off;
    index index.html index.htm;

    location / {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }   
}

只有当它们将由不同的服务器处理时，您才需要设置不同的位置块，可能在不同的端口上运行。