AppEngine - 客户端关闭保活连接

Question

我已将我的 Symfony 4 应用部署到 Google App Engine（灵活环境）。

构建似乎已经成功，但在 Chrome 中加载应用程序会导致错误：

Oops! An Error Occurred
The server returned a "500 Internal Server Error".
Something is broken. Please let us know what you were doing when this error occurred. We will fix it as soon as possible. Sorry for any inconvenience caused.

应用引擎日志在这里：

 2019/02/02 04:33:13 [info] 9#9: *6 client 172.17.0.4 closed keepalive connection
 A 
 GET 404 191 B 0 ms Chrome 71 /favicon.ico A  GET 404 191 B 0 ms Chrome 71
 GET 500 930 B 6 ms Chrome 71 /connect/google A  GET 500 930 B 6 ms Chrome 71
 GET 307 316 B 6 ms Chrome 71 / A  GET 307 316 B 6 ms Chrome 71
 172.17.0.4 - - [02/Feb/2019:04:32:13 +0000] "GET /connect/google HTTP/1.1" 500 930 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
 A 
 172.17.0.4 - - [02/Feb/2019:04:32:13 +0000] "GET / HTTP/1.1" 307 316 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
 A 
 2019/02/02 04:29:08 [info] 9#9: *1 client 172.17.0.4 closed keepalive connection
 A 
 GET 500 930 B 6 ms Chrome 71 /connect/google A  GET 500 930 B 6 ms Chrome 71
 GET 307 316 B 5 ms Chrome 71 / A  GET 307 316 B 5 ms Chrome 71
 172.17.0.4 - - [02/Feb/2019:04:28:08 +0000] "GET /connect/google HTTP/1.1" 500 930 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
 A 
 172.17.0.4 - - [02/Feb/2019:04:28:08 +0000] "GET / HTTP/1.1" 307 316 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
 A 
 GET 404 191 B 10 ms Chrome 71 /favicon.ico A  GET 404 191 B 10 ms Chrome 71
 GET 500 930 B 207 ms Chrome 71 /connect/google A  GET 500 930 B 207 ms Chrome 71
 172.17.0.4 - - [02/Feb/2019:04:27:50 +0000] "GET /connect/google HTTP/1.1" 500 930 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
 A 
 GET 307 316 B 271 ms Chrome 71 / A  GET 307 316 B 271 ms Chrome 71
 172.17.0.4 - - [02/Feb/2019:04:27:49 +0000] "GET / HTTP/1.1" 307 316 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
 A 
A  2019-02-02 03:22:43,817 INFO success: nginx entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)

A  2019-02-02 03:22:43,817 INFO success: php-fpm entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)

A  [02-Feb-2019 03:22:42] NOTICE: ready to handle connections

A  [02-Feb-2019 03:22:42] NOTICE: fpm is running, pid 7

A  2019/02/02 03:22:42 [notice] 8#8: start worker process 9

A  2019/02/02 03:22:42 [notice] 8#8: start worker processes

A  2019/02/02 03:22:42 [notice] 8#8: getrlimit(RLIMIT_NOFILE): 65536:65536

A  2019/02/02 03:22:42 [notice] 8#8: OS: Linux 4.9.0-8-amd64

A  2019/02/02 03:22:42 [notice] 8#8: nginx/1.10.3 (Ubuntu)

A  2019/02/02 03:22:42 [notice] 8#8: using the "epoll" event method

A  2019-02-02 03:22:42,339 INFO spawned: 'nginx' with pid 8

A  2019-02-02 03:22:42,338 INFO spawned: 'php-fpm' with pid 7

A  2019-02-02 03:22:41,335 INFO supervisord started with pid 1

A  2019-02-02 03:22:41,329 WARN No file matches via include "/etc/supervisor/conf.d/*.conf"

A  2019-02-02 03:22:41,329 CRIT Supervisor running as root (no user in config file)

我不明白这个错误。我该如何解决？

Answer 1

Symfony 将其错误写入 var/log 而不是 stdout（您可以配置它），但这意味着您需要 ssh 进入实例并读取 var/log/prod.log 以获取有关内容的更详细信息导致500错误。该文档解释了如何：

https://cloud.google.com/appengine/docs/flexible/php/debugging-an-instance

在这种情况下，日志是：

[2019-02-03 09:23:41] request.CRITICAL: Uncaught PHP Exception Symfony\Component\DependencyInjection\Exception\EnvNotFoundException: "Environment variable not found: "OAUTH_GOOGLE_CLIENT_ID"." at /app/vendor/symfony/dependency-injection/EnvVarPr
ocessor.php line 96 {"exception":"[object] (Symfony\\Component\\DependencyInjection\\Exception\\EnvNotFoundException(code: 0): Environment variable not found: \"OAUTH_GOOGLE_CLIENT_ID\". at /app/vendor/symfony/dependency-injection/EnvVarProcesso
r.php:96)"} []

一旦您收到错误消息，很容易看出哪里出了问题，似乎 OAUTH_GOOGLE_CLIENT_ID 环境尚未配置。

env_variables:
    APP_ENV: "prod"
    APP_SECRET: 
    OAUTH_GOOGLE_CLIENT_ID: 
    OAUTH_GOOGLE_CLIENT_SECRET: 

确保这些已在 app.yaml 中设置（尽管出于安全/最佳实践的考虑，请不要提交到 git，但您可以将它们提交为空白以获取信息）