start a program which listen to the port # socat tcp4-l:8000 stdio
# supervisorctl update test
You'll see such an error in the supervisord console
2023-01-27 13:03:20,563 INFO Creating socket tcp://0.0.0.0:8000
2023-01-27 13:03:20,564 ERRO XML-RPC response callback error:Traceback (most recent call last):
File "/usr/local/lib/python3.10/site-packages/supervisor/xmlrpc.py", line 78, in more
value = self.callback()
File "/usr/local/lib/python3.10/site-packages/supervisor/rpcinterface.py", line 947, in allfunc
callback = func(name, **extra_kwargs)
File "/usr/local/lib/python3.10/site-packages/supervisor/rpcinterface.py", line 301, in startProcess
process.spawn()
File "/usr/local/lib/python3.10/site-packages/supervisor/process.py", line 717, in spawn
self.before_spawn()
File "/usr/local/lib/python3.10/site-packages/supervisor/process.py", line 711, in before_spawn
self.fcgi_sock = self.group.socket_manager.get_socket()
File "/usr/local/lib/python3.10/site-packages/supervisor/socket_manager.py", line 74, in get_socket
self.ref_ctr.increment()
File "/usr/local/lib/python3.10/site-packages/supervisor/socket_manager.py", line 36, in increment
self.on_non_zero()
File "/usr/local/lib/python3.10/site-packages/supervisor/socket_manager.py", line 90, in _prepare_socket
self.socket = self.socket_config.create_and_bind()
File "/usr/local/lib/python3.10/site-packages/supervisor/datatypes.py", line 210, in create_and_bind
sock.bind(self.addr())
OSError: [Errno 98] Address in use
as a result supervisord would not even add the program, and no status would be shown
How to reproduce
Supervisord must already be started
Add such a config:
start a program which listen to the port
# socat tcp4-l:8000 stdio
# supervisorctl update test
You'll see such an error in the supervisord console
as a result supervisord would not even add the program, and no status would be shown