If not included as part of the initial Linux installation, install MySQL & dependencies.
Follow the documentation for starting MySQL for the first time & run the 'mysql_secure_installation' script to:
The following are optional, but recommended, steps to help improve the security of your ReadingRecord server.
# Disabling symbolic-links is recommended to prevent assorted security risks; # to do so, uncomment this line: symbolic-links=0 # Don't listen on a network port skip-networking
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