Nginx容器无法在Cloud Run上启动 [英] Nginx container fails to start on Cloud Run

问题描述

我正在尝试在Cloud Run上使用Nginx提供简单的静态页面.但是容器无法正确开始投放.

I'm attempting to serve simple static page with Nginx on Cloud Run. But the container fails to properly start serving.

容器正在启动，如 docker-entrypoint.sh 所回显的调试行所示:

Container is starting, as shown by the debug lines echoed from docker-entrypoint.sh:

2019-05-26T22:19:02.340289Z testing config
2019-05-26T22:19:02.433935Z nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
2019-05-26T22:19:02.434903Z nginx: configuration file /etc/nginx/nginx.conf test is successful
2019-05-26T22:19:02.436605Z starting on 8080
2019-05-26T22:19:02.487188Z2019/05/26 22:19:02 [alert] 6#6: prctl(PR_SET_DUMPABLE) failed (22: Invalid argument)

并最终终止

2019-05-26T22:20:00.153060259ZContainer terminated by the container manager on signal 9.

为了特别遵守 Cloud Run服务合同侦听 $ PORT 时， docker-entrypoint.sh 在中执行 $ PORT替换conf.d/*.conf .

In order to conform with the Cloud Run service contract specifically listening on $PORT the docker-entrypoint.sh performs $PORT substitution in conf.d/*.conf.

FROM nginx:1.15-alpine

COPY nginx-default.conf.template /etc/nginx/conf.d/default.conf.template

COPY docker-entrypoint.sh /
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["nginx", "-g", "daemon off;"]

我很自信，问题出在 docker-entrypoint.sh 之内，因为一旦$ PORT被硬编码为 8080 且图像如下所示:

I'm pretty confident issue lies within docker-entrypoint.sh because once $PORT is hardcoded as 8080 and image looks like this:

FROM nginx:1.15-alpine

COPY nginx-default.conf /etc/nginx/conf.d/default.conf

Cloud Run运行"正常.

Cloud Run "runs" fine.

执行替换的代码:

export NGINX_PORT=${PORT:-8080}
for f in $(find /etc/nginx/conf.d/ -type f -name '*.conf'); do
  envsubst '$NGINX_PORT' < $f > $f
done

注意:阅读<$ f 并编写>$ f 到同一文件的效果与通过在本地运行容器进行的测试相同.

NOTE: reading < $f and writing > $f to the same file works as tested by running the container locally.

预期

• nginx配置获取用实际值替换的 $ PORT 占位符
• 容器运行并在Cloud Run上的 $ PORT 上监听

• nginx configuration gets $PORT placeholder substituted with actual values
• container runs and listens on $PORT on Cloud Run

实际

• 容器无法在Cloud Run上运行
• 容器运行并在本地 $ PORT 上监听

推荐答案

已替换为固定

for f in $(find /etc/nginx/conf.d/ -type f -name '*.conf'); do
  envsubst '$NGINX_PORT' < $f > $f
done

使用

sed -i "s/\${NGINX_PORT}/${NGINX_PORT}/g" /etc/nginx/conf.d/*.conf

并更改 *.conf 文件中的 $ NGINX_PORT -> $ {NGINX_PORT} ，以避免替换歧义

and changing $NGINX_PORT -> ${NGINX_PORT} in *.conf files to avoid substitution ambiguities

这篇关于Nginx容器无法在Cloud Run上启动的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！