commit f625cfbb26591905539ef47f017f39dfbb32fa43
Author: Florian Best <best@univention.de>
Date:   Mon Aug 3 11:43:31 2020 +0200

    Bug #51729: raise the open file limits of the UMC-Web-Server

diff --git management/univention-management-console/univention-management-console-web-server management/univention-management-console/univention-management-console-web-server
index 6f4941e460..14330512aa 100755
--- management/univention-management-console/univention-management-console-web-server
+++ management/univention-management-console/univention-management-console-web-server
@@ -43,6 +43,7 @@ import zlib
 import base64
 import signal
 import hashlib
+import resource
 import tempfile
 import binascii
 import datetime
@@ -1608,6 +1609,11 @@ class UMC_HTTP_Daemon(DaemonRunner):
 		_thread_http.deamon = True
 		_thread_http.start()
 
+		try:
+			resource.setrlimit(resource.RLIMIT_NOFILE, (64512, 64512))
+		except (ValueError, resource.error) as exc:
+			CORE.error('Could not raise NOFILE resource limits: %s' % (exc,))
+
 		try:
 			# start notifier loop
 			notifier.init(notifier.GENERIC)