Guarantee consoleserver init before use

During a restart, a client may aggressively trigger
console reconnect before the consoleserver starts.

Make sure that the daemon is running and globals
ready before API could possible ask for console.

confluent_server/confluent/consoleserver.py

@@ -586,7 +586,7 @@ def _start_tenant_sessions(cfm):
     cfm.watch_nodecollection(_nodechange)
 
 
-def start_console_sessions():
+def initialize():
     global _tracelog
     global _bufferdaemon
     global _bufferlock
@@ -598,6 +598,8 @@ def start_console_sessions():
     fl = fcntl.fcntl(_bufferdaemon.stdout.fileno(), fcntl.F_GETFL)
     fcntl.fcntl(_bufferdaemon.stdout.fileno(),
                 fcntl.F_SETFL, fl | os.O_NONBLOCK)
+
+def start_console_sessions():
     configmodule.hook_new_configmanagers(_start_tenant_sessions)
 
 

confluent_server/confluent/main.py

@@ -260,6 +260,7 @@ def run(args):
         os.umask(oumask)
     http_bind_host, http_bind_port = _get_connector_config('http')
     sock_bind_host, sock_bind_port = _get_connector_config('socket')
+    consoleserver.initialize()
     webservice = httpapi.HttpApi(http_bind_host, http_bind_port)
     webservice.start()
     disco.start_detection()