** Changed in: neutron
Status: New => Won't Fix
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https://bugs.launchpad.net/bugs/1809080
Title:
reload_cfg doesn't work correctly
Status in neutron:
Won't Fix
Bug description:
class ProcessManager[1] is used to managed processes in neutron agents. The
reload_cfg function is used to reload configuration by sending HUB signal to
the target process. This may work for a linux system administrator, where
she/he updates the config file and then sends HUP signal to reload.
But in openstack, this is a bit different. I have read the code about
dnsmasq[2] and haproxy. The parameters and config files are generated by a
callback function. This function generates config files and return the
command(with parameters). Sending HUP signal doesn't change parameters, neither
regenerate config files.
I would suggest another way to reload/restart process which makes sure
the callback function is called.
[1]
https://github.com/openstack/neutron/blob/8c59cfe98eb15f024b6c24312c0bf51af02a5dc3/neutron/agent/linux/external_process.py#L50
[2]
https://github.com/openstack/neutron/blob/8c59cfe98eb15f024b6c24312c0bf51af02a5dc3/neutron/agent/linux/dhcp.py#L457-L458
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