Bug 1095414

Description of problem:
Similar to https://bugzilla.redhat.com/show_bug.cgi?id=1095395, the openstack-ceilometer-compute 
service does not successfully start.

sudo runuser -s /bin/bash ceilometer -c '/usr/bin/ceilometer-agent-compute --logfile /var/log/ceilometer/compute.log '
Traceback (most recent call last):
  File "/usr/bin/ceilometer-agent-compute", line 6, in <module>
    from ceilometer.cli import agent_compute
  File "/usr/lib/python2.6/site-packages/ceilometer/cli.py", line 34, in <module>
    from ceilometer.api import app
  File "/usr/lib/python2.6/site-packages/ceilometer/api/app.py", line 26, in <module>
    import pecan
ImportError: No module named pecan

Version-Release number of selected component (if applicable):
openstack-ceilometer-compute-2014.1-1.el6.noarch


How reproducible:
Always, IF the python-pecan module is not installed


Steps to Reproduce:
1. rpm -e opestack-ceilometer-api openstack-ceilometer-compute python-pecan
2. yum -y install opentstack-ceilometer-compute
3. service openstack-ceilometer-agent start
4. service openstack-ceilometer-agent status

Actual results:

$ sudo service openstack-ceilometer-compute start ; echo $?
Starting openstack-ceilometer-compute:                     [  OK  ]

$ sudo service openstack-ceilometer-compute status ; echo $?
openstack-ceilometer-compute dead but pid file exists
1

Expected results:
$ sudo service openstack-ceilometer-compute start ; echo $?
Starting openstack-ceilometer-compute:                     [  OK  ]

$ sudo service openstack-ceilometer-compute status ; echo $?
openstack-ceilometer (pid  12345) is running...
0

Additional info:

See https://bugzilla.redhat.com/show_bug.cgi?id=1095395 for a similar problem;
I think the underlying Require: for openstack-ceilometer-compute might be
openstack-ceilometer-api, which _does_ include pecan, as well as many other
python modules.