Splunk 8.0 upgrade webserver not starting

[barriejames]

We have 7.3.1 setup with systemd. On upgrade 8.0 stopped running webserver and although logs showed its talking to our other splunk instances, we can't get the web browser to work. Netstat not showing port 8000. We reverted back and went with init.d setup which worked fine. Any advice as we want to stay on systemd.

[barriejames]

Error in web_service.log

Traceback (most recent call last):
File "/opt/splunk/lib/python2.7/site-packages/cherrypy/process/wspbus.py", line 147, in publish
output.append(listener(*args, **kwargs))
File "/opt/splunk/lib/python2.7/site-packages/cherrypy/process/plugins.py", line 525, in stop
for thread_ident, i in self.threads.iteritems():
RuntimeError: dictionary changed size during iteration

[mhlesourd]

You can check the web_service.log in /opt/splunk/var/log/splunk/web_service.log
I had a lot of error related to Python 3.0.