Disable systemd auto-restart of dependent services for spineRouters #83
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@mlok-nokia @anamehra for viz and review.. thanks! |
11 tasks
judyjoseph
reviewed
Nov 14, 2023
arlakshm
approved these changes
Nov 14, 2023
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@deepak-singhal0408 can't clean cherry pick to 202305. |
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@yxieca , can you help review/approve for 202205? Thanks! |
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Thanks @yxieca ! |
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Thanks @yxieca for help merging into 202205.. |
This was referenced Nov 30, 2023
deepak-singhal0408
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Description:
Issue details and RCA here. sonic-net/sonic-buildimage#16991
MSFT ADO:
25422412
How I did it:
Currently featured script overrides the systemd service files of the features depending upon auto_restart enable/disable.
I am skipping dependent features(syncd, gbsyncd for now) to have "RESTART=Always"
for them to not start immidiately, and instead get started by SWSS through swss.sh script.
The issue of syncd double stop is also applicable to pizza box platforms, however no traffic impact is seen there, where as on VOQ chassis, we do see traffic impact due to early start of syncd service.
The change can be extended to pizza box platforms as well in future once it gets vetted on SpineRouters.
How to verify it
a. No traffic loss end to end
b. Dont see double stop/start of syncd service
Also Ran few more tests.
Tested on both single asic and multi-asic hw platforms.
Tested config-reload
sudo reboot
service restart
syncd process crash, orchagent process crash
Confirmed from logs, that in none of the scenario, syncd gets killed twice