Beta Branch update MariaDB install/upgrade routines to exclude from OOM in 130.00beta01

update MariaDB install/upgrade routines to exclude from OOM in 130.00beta01

- update MariaDB initial install or major version upgrade routines to exclude MariaDB MySQL process from Out Of Memory killer process to ensure in low memory situations, MariaDB process isn't a candidate for premature process termination. Such premature termination due to OOM events could potentially cause MySQL data corruption
- for existing 130.00beta01 users after running cmupdate, running centmin.sh menu will trigger a new mariadb_oomfix function that checks if MariaDB MySQL service has the appropriate /etc/systemd/system/mariadb.service.d/oomscoreadjust.conf config file created to set MariaDB service with OOMScoreAdjust=-1000 to effectively remove it as a candidate for termination. You can verify it it has been set along with other Centmin Mod custom set settings, using SSH command below:

systemctl show mariadb --no-pager | egrep 'LimitNOFILE|NotifyAccess|OOM'

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example output on CentOS 7

systemctl show mariadb --no-pager | egrep 'LimitNOFILE|NotifyAccess|OOM'
NotifyAccess=all
LimitNOFILE=524288
OOMScoreAdjust=-1000

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130.00beta01 branch

• Branch: https://github.com/centminmod/centminmod/tree/130.00beta01
• Commit History: https://github.com/centminmod/centminmod/commits/130.00beta01

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