Hello,
I am trying to get Nova Compute create_instance hook to be called. However,
although the VM gets started from Horizon properly, the print statement in the
hook script simple.py do not get printed and there is no reference in
/var/log/nova/nova-compute.log to the strings "hook", "demo", "simple", etc.
When I run the hook script from the command line, it runs fine.
Please let me know what I am missing. Thanks!
Details: I have created a directory with the following structure:
Nova-Hooks/
setup.py
demo_nova_hooks/
__init__.py
simple.py
Nova-Hooks is in $PYTHONPATH. Both setup.py and simple.py have execute
permissions for all.
I ran "setup.py install", restarted nova-compute service, verified that
nova-compute is running, and then started the instance. Here are the contents
of setup.py:
<snip>
#!/bin/python
import setuptools
setuptools.setup(
name="demo_nova_hooks",
version=5,
packages=['demo_nova_hooks'],
entry_points={
'nova.hooks': [
'create_instance=demo_nova_hooks.simple:Simple',
]
},
)
</snip>
Here are the contents of simple.py:
<snip>
#!/usr/bin/python
import sys
class Simple(object):
logfile = '/tmp/simple-nova-hook.log'
with open(logfile, 'a+') as log:
print >>log, 'Begin Simple'
def pre(self, *args, **kwargs):
with open(self.logfile, 'a+') as log:
print >>log, 'Begin Pre'
for i, arg in enumerate(args):
print >>log, '%d: %s' % (i, arg)
for k, v in kwargs.items():
print >>log, '%s=%s' % (k, v)
print >>log, 'END PRE'
def post(self, rv, *args, **kwargs):
with open(self.logfile, 'a+') as log:
print >>log, 'Begin Post'
if __name__ == "__main__":
print "Started"
a = Simple()
a.pre("None")
</snip>
Cheers,
Sundar
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