nginx 反向代理 docker 容器中的 2 個本地 lambda

我有 2 個 lambda 函式包裝在 docker 容器中，並且正在使用 docker compose 一起執行它們。一個在埠 9000 上執行，另一個在埠 9001 上執行。我正在嘗試使用 nginx 讓它們都可以在本地同一埠上訪問。我可以在郵遞員各自的埠分別擊中每個 lambda

本地主機：9000/2015-03-31/functions/function/invocations

但不在 nginx 映射埠。

這是我的 default.conf

server {
   listen       80;
   server_name  localhost;

   location /user-api/ {
       proxy_pass   http://127.0.0.1:9000/2015-03-31/functions/function/invocations;
   }

   location /cart-api/ {
       proxy_pass   http://127.0.0.1:9001/2015-03-31/functions/function/invocations;
   }

}

這是我的 docker-compose.yml

version: "3.7"

services:
 user-api:
   build: ./app/lambdas/user-api
   ports:
     - 9000:8080
   env_file:
     - .env
 cart-api:
   build: ./app/lambdas/cart-api
   ports:
     - 9001:8080
   env_file:
     - .env
 nginx-proxy:
       depends_on:
           - user-api
           - cart-api
       image: nginx:alpine
       volumes: 
           - $PWD/default.conf:/etc/nginx/conf.d/default.conf
       networks:
           my-network-name:
               aliases:
                   - api-g-way
       ports:
           - 1234:80
 
networks:
   my-network-name:

這是我嘗試訪問任一終端時的終端輸出

Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them
[+] Running 3/0
⠿ Container my-lambdas-cart-api-1     Created                                                                                         0.0s
⠿ Container my-lambdas-user-api-1     Created                                                                                         0.0s
⠿ Container my-lambdas-nginx-proxy-1  Created                                                                                         0.0s
Attaching to my-lambdas-cart-api-1, my-lambdas-nginx-proxy-1, my-lambdas-user-api-1
my-lambdas-cart-api-1     | 22 Oct 2022 19:20:35,282 [INFO] (rapid) exec '/var/runtime/bootstrap' (cwd=/var/task, handler=)
my-lambdas-user-api-1     | 22 Oct 2022 19:20:35,301 [INFO] (rapid) exec '/var/runtime/bootstrap' (cwd=/var/task, handler=)
my-lambdas-nginx-proxy-1  | /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
my-lambdas-nginx-proxy-1  | /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
my-lambdas-nginx-proxy-1  | /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
my-lambdas-nginx-proxy-1  | 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
my-lambdas-nginx-proxy-1  | 10-listen-on-ipv6-by-default.sh: info: /etc/nginx/conf.d/default.conf differs from the packaged version
my-lambdas-nginx-proxy-1  | /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
my-lambdas-nginx-proxy-1  | /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
my-lambdas-nginx-proxy-1  | /docker-entrypoint.sh: Configuration complete; ready for start up
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: using the "epoll" event method
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: nginx/1.23.2
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: built by gcc 11.2.1 20220219 (Alpine 11.2.1_git20220219) 
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: OS: Linux 5.10.124-linuxkit
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: start worker processes
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: start worker process 29
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: start worker process 30
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: start worker process 31
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: start worker process 32
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:35 [notice] 1#1: start worker process 33
my-lambdas-nginx-proxy-1  | 172.19.0.1 - - [22/Oct/2022:19:20:40 +0000] "POST /user-api HTTP/1.1" 502 157 "-" "PostmanRuntime/7.29.2" "-"
my-lambdas-nginx-proxy-1  | 2022/10/22 19:20:40 [error] 29#29: *1 connect() failed (111: Connection refused) while connecting to upstream, client: XXX.XX.XX.XXX, server: localhost, request: "POST /user-api HTTP/1.1", upstream: "http://127.0.0.1:9000/2015-03-31/functions/function/invocations", host: "127.0.0.1:1234"

它似乎擊中了正確的上游地址，但連接被拒絕。請記住，這是我第一次使用 nginx。任何幫助，將不勝感激！

你做錯了：每個容器都有自己的環回，這就是你得到Connection refused的原因。

嘗試這個：

server {
   listen 80;

   location /user-api/ {
       proxy_pass http://user-api:8080/2015-03-31/functions/function/invocations;
   }

   location /cart-api/ {
       proxy_pass http://cart-api:8080/2015-03-31/functions/function/invocations;
   }
}

您還需要熟悉容器中的名稱服務。

引用自：https://serverfault.com/questions/1113778