get_connector_properties: exception FailedToDropPrivileges

[Imran Ansari]

Hi,
We are using os-brick in our Docker volume plugin and on one of our customer's setup, the plugin runs fine for few hours and then it starts failing while trying to execute privsep-helper with the import error.

Would really appreciate any help/hints on this.

2019-09-17 14:05:04,490 [DEBUG] os_brick.utils [140667073555176] PoolThread-twisted.internet.reactor-0 ==> get_connector_properties: call "{'root_helper': 'sudo', 'my_ip': 'xxx.xxx.xxx.xxx', 'multipath': True, 'enforce_multipath': True, 'host': None, 'execute': None}"
2019-09-17 14:05:04,491 [INFO] oslo.privsep.daemon [140667073555176] PoolThread-twisted.internet.reactor-0 Running privsep helper: ['sudo', 'privsep-helper', '--config-file', '/etc/hpedockerplugin/hpe.conf', '--privsep_context', 'os_brick.privileged.default', '--privsep_sock_path', '/tmp/tmp1bxcn9_h/privsep.sock']
2019-09-17 14:05:04,665 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: Traceback (most recent call last):
2019-09-17 14:05:04,666 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: File "/usr/bin/privsep-helper", line 6, in <module>
2019-09-17 14:05:04,666 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: from pkg_resources import load_entry_point
2019-09-17 14:05:04,666 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 77, in <module>
2019-09-17 14:05:04,667 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: __import__('pkg_resources.extern.packaging.requirements')
2019-09-17 14:05:04,667 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: File "/usr/lib/python3.6/site-packages/pkg_resources/_vendor/packaging/requirements.py", line 9, in <module>
2019-09-17 14:05:04,667 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: from pkg_resources.extern.pyparsing import stringStart, stringEnd, originalTextFor, ParseException
2019-09-17 14:05:04,667 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: File "/usr/lib/python3.6/site-packages/pkg_resources/extern/__init__.py", line 61, in load_module
2019-09-17 14:05:04,668 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: "distribution.".format(**locals())
2019-09-17 14:05:04,668 [WARNING] oslo.privsep.daemon [140667071171304] fd_logger privsep log: ImportError: The 'pyparsing' package is required; normally this is bundled with this package so if you get this warning, consult the packager of your distribution.
2019-09-17 14:05:04,677 [CRITICAL] oslo.privsep.daemon [140667073555176] PoolThread-twisted.internet.reactor-0 privsep helper command exited non-zero (1)
2019-09-17 14:05:04,677 [DEBUG] os_brick.utils [140667073555176] PoolThread-twisted.internet.reactor-0 <== get_connector_properties: exception (187ms) FailedToDropPrivileges('privsep helper command exited non-zero (1)',)