AWS Elastic Beanstalk PHP 日志不在 CloudWatch 中

Question

我有一个通过 AWS Elastic Beanstalk 运行的 PHP 应用程序。但是 PHP 错误日志似乎没有与访问日志等一起包含在 CloudWatch 中。如何将它们发送到 CloudWatch？

Answer 1

根据一些探索，php 错误日志似乎发送到/var/logs/php-fpm/www-error.log，由/etc/php-fpm.d/www.conf 中的设置决定：

php_admin_value[error_log] = /var/log/php-fpm/www-error.log

根据here 信息发送到 CloudWatch for PHP 的唯一日志是：

/var/log/eb-engine.log
/var/log/eb-hooks.log
/var/log/httpd/access_log
/var/log/httpd/error_log
/var/log/nginx/access.log
/var/log/nginx/error.log

您可以添加自定义配置以让 CloudWatch 代理获取正确的文件。或者，您可以将 php 错误消息添加到已发送的文件中。这可以通过文件.ebextensions/my.config中的以下内容来完成：

/etc/php-fpm.d/www-my-overrides.conf:
  mode: "000644"
  owner: root
  group: root
  # For some reason, EB configures the php errors to go to /var/log/php-fpm/www-error.log,
  # but doesn't include that file in the default log files sent to CloudWatch. This directs
  # the log files to the error file that is being sent to CloudWatch
  content: |
    [www]
    php_admin_value[error_log] = /var/log/httpd/error_log

我不确定，但我认为www-my-overrides.conf 文件名需要在同一目录中的www.confg 之后按字母顺序排列。

Answer 2

如果您使用nginx，那么您需要使用/var/log/nginx/error.log 作为错误日志目标——CloudWatch 似乎会忽略/var/log/httpd，除非您使用 Apache，因此即使您写入它，更改也不会'不会出现在 CloudWatch 中。

files:
  /etc/php-fpm.d/www-my-overrides.conf:
    mode: "000644"
    owner: root
    group: root
    # For some reason, EB configures the php errors to go to /var/log/php-fpm/www-error.log,
    # but doesn't include that file in the default log files sent to CloudWatch. This directs
    # the log files to the error file that is being sent to CloudWatch
    content: |
      [www]
      php_admin_value[error_log] = /var/log/nginx/error.log

此外，您需要使该文件可被 php-fpm 进程写入，该进程默认以webapp 运行，此外您还想确保它存在......它不会在创建新实例时，所以执行这两个命令非常重要：

container_commands:
  01-command:
    command: echo "-- DEPLOYMENT --" >> /var/log/nginx/error.log
  02-command:
    command: chmod 666 /var/log/nginx/error.log