Public bug reported:
Code inspection showed that L3 HA implementation outputs config file for
keepalived; then (re)starts the daemon, and only then attempts to write
check scripts. It is a race condition vector that would show up if it
would take it longer for the agent to write the check scripts; or if the
agent would fail to write them at all due to some other bug. In which
case, the daemon and the router may have fallen back to backup state.
We should first prepare all files, then (re)start keepalived.
** Affects: neutron
Importance: Low
Assignee: Ihar Hrachyshka (ihar-hrachyshka)
Status: In Progress
** Changed in: neutron
Importance: Undecided => Low
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https://bugs.launchpad.net/bugs/1674780
Title:
L3 HA: check scripts are written after keepalived is (re)started
Status in neutron:
In Progress
Bug description:
Code inspection showed that L3 HA implementation outputs config file
for keepalived; then (re)starts the daemon, and only then attempts to
write check scripts. It is a race condition vector that would show up
if it would take it longer for the agent to write the check scripts;
or if the agent would fail to write them at all due to some other bug.
In which case, the daemon and the router may have fallen back to
backup state.
We should first prepare all files, then (re)start keepalived.
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