Certain settings of the FLAT server can be configured using environment variables. The chapter Defining Env Vars in the Cookbook provides information on how to set environment variables.
FLAT_SERVER_ROLE: This setting is typically used to distinguish production systems from staging or development servers. Its value is accessible in the
$server variable as
FLAT_STATUS_AUTH: Username and password, separated by a
: for access to the
httpd status pages. The pages are disabled entirely if
FLAT_STATUS_AUTH is not set. If enabled, the
httpd status can be requested via HTTP at
/ServerStatus, and the php-fpm status at
FLAT_DEBUG_ALLOW_HEADER: enable per request debugging, defaults to
FLAT_DEBUG_AUTH is set.
FLAT_DEBUG_AUTH: sets a password to protect per request debugging.
Note that the maximum allowed overall time for a given request is always limited by
FLAT_MAX_TIMEOUT. All other timeouts can be individually adjusted for each request using the appropriate request option.
Use the following environment variables to configure the timeouts used during requests:
FLAT_DEFAULT_TIMEOUT: Default timeout in seconds for outgoing HTTP requests.
FLAT_DEFAULT_CONNECT_TIMEOUT: Default connection timeout in seconds for outgoing HTTP requests. If set to 0, the value of
FLAT_DEFAULT_TIMEOUT is used.
FLAT_DEFAULT_TTFB_TIMEOUT: Maximum time in seconds for receiving the first byte.
FLAT_MAX_TIMEOUT: Maximum allowed time in seconds for outgoing HTTP requests.
FLAT_MAX_TIMEOUT_PROCESSES: Specifies how many PHP-FPM processes are allowed to wait for slow sources at any one time. The lower the threshold value, the earlier slow sources will be blocked.
Some parameters used for PHP-FPM process management can be adjusted using environment variables. Refer to the PHP-FPM documentation for more information.
500. Limits the number of requests each child process executes before it is replaced by a new process.
5. The desired minimum number of idle child processes to be created.
7. The desired maximum number of idle child processes.
pm.start_servers. The default is the average of
pm.min_spare_servers. The initial number of child processes to be started.
Setting Envvars (Cookbook)