[英]I receive a 502 Bad Gateway occasionally during the execution of my node.js app on IBM Bluemix
[英]Why I receive: 502 Bad Gateway?
我有這個Dockerfile,用於與Nginx一起部署我的nodejs應用程序:
#Create our image from Node
FROM node:latest as builder
MAINTAINER Cristi Boariu <cristiboariu@gmail.com>
# use changes to package.json to force Docker not to use the cache
# when we change our application's nodejs dependencies:
ADD package.json /tmp/package.json
RUN cd /tmp && npm install
RUN mkdir -p /opt/app && cp -a /tmp/node_modules /opt/app/
# From here we load our application's code in, therefore the previous docker
# "layer" thats been cached will be used if possible
WORKDIR /opt/app
ADD . /opt/app
EXPOSE 8080
CMD npm start
### STAGE 2: Setup ###
FROM nginx:1.13.3-alpine
## Copy our default nginx config
RUN mkdir /etc/nginx/ssl
COPY nginx/default.conf /etc/nginx/conf.d/
COPY nginx/star_zuumapp_com.chained.crt /etc/nginx/ssl/
COPY nginx/star_zuumapp_com.key /etc/nginx/ssl/
RUN cd /etc/nginx && chmod -R 600 ssl/
RUN mkdir -p /opt/app
EXPOSE 80 443
CMD ["nginx", "-g", "daemon off;"]
這是我的nginx文件:
upstream api-server {
server 127.0.0.1:8080;
}
server {
listen 80;
server_name example.com www.example.com;
access_log /var/log/nginx/dev.log;
error_log /var/log/nginx/dev.error.log debug;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarder-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_pass http://api-server;
proxy_redirect off;
}
}
server {
listen 443 default ssl;
server_name example.com www.example.com;
ssl on;
ssl_certificate /etc/nginx/ssl/star_example_com.chained.crt;
ssl_certificate_key /etc/nginx/ssl/star_example_com.key;
server_tokens off;
ssl_session_timeout 5m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
ssl_prefer_server_ciphers on;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarder-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_pass http://api-server;
proxy_redirect off;
}
}
我已經花了幾個小時調試它,但沒有成功。
基本上,我收到:
502錯誤的網關
嘗試在以下位置進行本地測試時:
https://localhost/docs/#
從docker日志中:
172.17.0.1 - - [04/May/2018:05:35:36 +0000] "GET /docs/ HTTP/1.1" 502 166 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.1 Safari/605.1.15" "-"
2018/05/04 05:35:36 [error] 7#7: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.17.0.1, server: example.com, request: "GET /docs/ HTTP/1.1", upstream: "http://127.0.0.1:8080/docs/", host: "localhost"
有人可以幫忙嗎?
您應該配置:
server 172.17.42.1:8080;
172.17.42.1
是172.17.42.1
的網關IP地址。
要么
server app_ipaddress_container:8080;
在nginx.conf文件中。
由於端口8080是在主機上而不是在容器上偵聽的。
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