debug.txt

1. configure horizon logging
vi /usr/share/openstack-dashboard/openstack_dashboard/settings.py
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        # Include the default Django email handler for errors
        # This is what you'd get without configuring logging at all.
        'mail_admins': {
            'class': 'django.utils.log.AdminEmailHandler',
            'level': 'ERROR',
             # But the emails are plain text by default - HTML is nicer
            'include_html': True,
        },
        # Log to a text file that can be rotated by logrotate
        'logfile': {
            'class': 'logging.handlers.WatchedFileHandler',
            'filename': '/var/log/horizon/horizon.log'
        },
    },
    'loggers': {
        # Again, default Django configuration to email unhandled exceptions
        'django.request': {
            'handlers': ['mail_admins'],
            'level': 'ERROR',
            'propagate': True,
        },
        # Might as well log any errors anywhere else in Django
        'django': {
            'handlers': ['logfile'],
            'level': 'ERROR',
            'propagate': False,
        },
        # Your own app - this assumes all your logger names start with "hostcapability."
        'hostcapability': {
            'handlers': ['logfile'],
            'level': 'DEBUG', # Or maybe INFO or DEBUG
            'propagate': False
        },
        'horizon': {
            'handlers': ['logfile'],
            'level': 'DEBUG', # Or maybe INFO or DEBUG
            'propagate': False
        },
    },
}