[dhcp-server] Change the kea-dhcp4 PID file directory to tmpfs. #17974
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oleksandrivantsiv
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yaqiangz
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lguohan
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MSFT ADO number: 26640026 |
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@yxieca Could you please help to merge this PR? |
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Cherry-pick PR to 202311: #18116 |
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Why I did it
Fix the issue with running "dhcp-server-ipv4:kea-dhcp4" process after a cold reboot: #17948
Work item tracking
How I did it
The root cause of the issue is that during the cold reboot, the PID file of the process (that is stored on the persisted FS) is not cleared. From the KEA DHCP server documentation:
To make sure that the PID file is always cleared during the dhcp-server container restart the PID file should be stored on the tmpfs.
How to verify it
Go over the steps to reproduce described in #17948.
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)