The service unit should have configuration section '[Service]', not '[service]'
Before patch:
root@cfg01:~# salt dbs\* cmd.run 'grep files /proc/$(cat /var/run/mysqld/$(hostname).pid)/limits'
dbs01.lab.example.com:
Max open files 1024 4096 files
dbs02.lab.example.com:
Max open files 1024 4096 files
dbs03.lab.example.com:
Max open files 1024 4096 files
After patch:
root@cfg01:~# salt dbs\* cmd.run 'grep files /proc/$(cat /var/run/mysqld/$(hostname).pid)/limits'
dbs01.lab.example.com:
Max open files 1024000 1024000 files
dbs02.lab.example.com:
Max open files 1024000 1024000 files
dbs03.lab.example.com:
Max open files 1024000 1024000 files
The service unit should have configuration section '[Service]', not '[service]'
Before patch:
After patch: