slave run in docker didn't work.

[ityoung]

Description of issue

slave run in docker seems not work.

I start a master on my host, and then start a slave node in docker container, then the master print the error message below.

If I run slave node at the host master runs, then it works perfectly.

On master:

locust --master --host=http://192.168.3.158

On slave:

locust --slave --master-host=192.168.0.29

192.168.3.158: server I want to test;
192.168.0.29: my pc

Error message I got:

root@yangxin-PC:~/PycharmProjects/gt-performance-test/tests# locust --master --host=http://192.168.3.158
[2018-04-26 15:38:25,323] yangxin-PC/INFO/locust.main: Starting web monitor at *:8089
[2018-04-26 15:38:25,323] yangxin-PC/INFO/locust.main: Starting Locust 0.8.1
[2018-04-26 15:38:25,344] yangxin-PC/INFO/locust.runners: Client '65dce4343730_6092c759726eb4540ca9fe9c8a14c829' reported as ready. Currently 1 clients ready to swarm.
[2018-04-26 15:38:25,345] yangxin-PC/ERROR/stderr: Traceback (most recent call last):
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: File "/usr/local/lib/python3.5/dist-packages/gevent/greenlet.py", line 536, in run
    result = self._run(*self.args, **self.kwargs)
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: File "/usr/local/lib/python3.5/dist-packages/locustio-0.8.1-py3.5.egg/locust/runners.py", line 332, in client_listener
    events.slave_report.fire(client_id=msg.node_id, data=msg.data)
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: File "/usr/local/lib/python3.5/dist-packages/locustio-0.8.1-py3.5.egg/locust/events.py", line 34, in fire
    handler(**kwargs)
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: File "/usr/local/lib/python3.5/dist-packages/locustio-0.8.1-py3.5.egg/locust/stats.py", line 587, in on_slave_report
    global_stats.total.extend(StatsEntry.unserialize(data["stats_total"]))
[2018-04-26 15:38:25,346] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,347] yangxin-PC/ERROR/stderr: KeyError: 'stats_total'
[2018-04-26 15:38:25,347] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,347] yangxin-PC/ERROR/stderr: Thu Apr 26 15:38:25 2018
[2018-04-26 15:38:25,347] yangxin-PC/ERROR/stderr: 
[2018-04-26 15:38:25,347] yangxin-PC/ERROR/stderr: <Greenlet at 0x7f4cc4a9cd58: <bound method MasterLocustRunner.client_listener of <locust.runners.MasterLocustRunner object at 0x7f4cc4a729b0>>> failed with KeyError

[robooo]

I get similar error when I was running not same versions of locust on master and slave (0.8 and 0.8.1)
Check if you have same versions, and be aware
pip install locustio -> 0.8.1
pip install locust -> 0.8

[ityoung]

@robooo thanks, but I check the version, and they are all 0.8.1.

When I run master on docker container, I can fetch it through web-UI on my host's browser. Did I need to map some port to make host fetch container?

[ityoung]

@robooo oh my... I get into container, clean all about locust in site-packages, and reinstall locust with source code, now it works perfectly!

I have no idea why I seemed installing a error one, I'm using

pip install locustio==0.8.1

and when container started, it says Starting Locust 0.8.1

I will close this issue. Many thanks!