Hi @陈建宇 ,
Sorry that I’m not familiar with Linux.
Please make sure the Always on Availability Group is enabled and created.
Here are some articles which might help:
https://www.mssqltips.com/sqlservertip/5239/install-and-configure-sql-server-2017-availability-groups-on-linux--part-2/
https://www.mssqltips.com/sqlservertip/5416/install-and-configure-sql-server-2017-availability-groups-on-linux--part-5/
Best Regards,
Amelia
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