Management Flags


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.


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 port 3031
./uwsgi --no-server -w myadmin --pyargv " 0 0"
# re-enable logging
./uwsgi --no-server -w myadmin --pyargv " 0 1"
# read a value:
./uwsgi --no-server -w myadmin --pyargv " 15"