q-dhcp agent fails to start on Ubuntu 12.04

[Hemanth Ravi]

The fix for this bug https://bugs.launchpad.net/neutron/+bug/1212401 breaks q-dhcp agent on ubuntu 12.04 since dnsmasq --version can only be run as root and neutron/agent/linux/utils.py/create_process() is not invoked with root_helper. Bug fix for 1212401 addressed by https://review.openstack.org/#/c/96976/

This is breaking the 3rd party plugin CI

[Carl Baldwin (carl-baldwin)]

I can run dnsmasq --version as root on Ubuntu 12.04. I've never had trouble with this.

I can't imagine this is a High importance bug. Please provide more information about why you are unable to run dnsmasq --version as a non-root user and I am able to.

[Hemanth Ravi (hemanth-ravi)]

dnsmasq --version does run as root.

However when stack.sh is invoked by a non root user (user does exist in sudoers list), dhcp-agent fails to start since neutron/agent/linux/utils.py/create_process() is invoked with root_helper set to NULL. This causes dnsmasq --version in that function to fail and the process to exit.

[Hemanth Ravi (hemanth-ravi)]

The issue appears to be due to /usr/sbin missing from the shell PATH. Importance can be lowered, should be able to resolve this on the CI setup.

[Hemanth Ravi (hemanth-ravi)]

User error: Issue was due to /usr/sbin missing in the PATH for the user running stack.sh.