DetailsUpgrading from 10.3 to 10.4 can result in the password for a user using 'mysql_native_password' to be removed.
version 10.3
# mysql --version
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mysql Ver 15.1 Distrib 10.3.11-MariaDB, for Linux (x86_64) using readline 5.1
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# mysql mysql -e "select User,Host,plugin,Password,authentication_string from user where User='cptest';"
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+--------+------+-----------------------+-------------------------------------------+-----------------------+
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| User | Host | plugin | Password | authentication_string |
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+--------+------+-----------------------+-------------------------------------------+-----------------------+
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| cptest | % | mysql_native_password | *A8C0FBBC868C0ABC516A6CED06C02974BEC047C2 | |
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+--------+------+-----------------------+-------------------------------------------+-----------------------+
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- upgrade to 10.4
notice that the user no longer has a password:
# mysql --version
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mysql Ver 15.1 Distrib 10.4.1-MariaDB, for Linux (x86_64) using readline 5.1
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# mysql mysql -e "select User,Host,plugin,Password,authentication_string from user where User='cptest';"
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+--------+------+-----------------------+----------+-----------------------+
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| User | Host | plugin | Password | authentication_string |
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+--------+------+-----------------------+----------+-----------------------+
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| cptest | % | mysql_native_password | | |
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+--------+------+-----------------------+----------+-----------------------+
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Suggested Resolution / Expected Behavior- I would expect that the password maintained in the Password column would either be retained upon upgrading to 10.4 or it would be migrated over to the authentication_string column if the expectation is that all passwords are maintained there