Management Flags

Warning

This feature may be currently broken or deprecated.

You can modify the behavior of some aspects of the uWSGI stack remotely, without taking the server offline using the Management Flag system.

Note

A more comprehensive re-setup system may be in the works.

All the flags take an unsigned 32-bit value (so the block size is always 4) that contains the value to set for the flag. If you do not specify this value, only sending the uWSGI header, the server will count it as a read request.

Flag	Action	Description
0	logging	enable/disable logging
1	max_requests	set maximum number of requests per worker
2	socket_timeout	modify the internal socket timeout
3	memory_debug	enable/disable memory debug/report
4	master_interval	set the master process check interval
5	harakiri	set/unset the harakiri timeout
6	cgi_mode	enable/disable cgi mode
7	threads	enable/disable threads (currently unimplemented)
8	reaper	enable/disable process reaper
9	log-zero	enable/disable logging of request with zero response size
10	log-slow	set/unset logging of slow requests
11	log-4xx	enable/disable logging of request with 4xx response status
12	log-5xx	enable/disable logging of request with 5xx response status
13	log-big	set/unset logging of request with big response size
14	log-sendfile	set/unset logging of sendfile requests
15	backlog-status	report the current size of the backlog queue (linux on tcp only)
16	backlog-errors	report the number of errors in the backlog queue (linux on tcp only)

myadmin tool

A simple (and ugly) script, myadmin, is included to remotely change management flags:

# disable logging on the uWSGI server listening on 192.168.173.17 port 3031
./uwsgi --no-server -w myadmin --pyargv "192.168.173.17:3031 0 0"
# re-enable logging
./uwsgi --no-server -w myadmin --pyargv "192.168.173.17:3031 0 1"
# read a value:
./uwsgi --no-server -w myadmin --pyargv "192.168.173.17:3031 15"