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            the mystery continues: 
 
 su mysql -c '/usr/local/mysql/bin/mysqladmin stop'
 Slave stopped
 [root@VM-GR-MYSQL-U1 bin]# ps aux | grep mysql
 root     19777  0.0  0.0 112812   972 pts/2    S+   16:14   0:00 grep --color=auto mysql
 root     29563  0.0  0.0 192032  2444 ?        S    Jun23   0:00 su mysql -c ./mysqld
 mysql    29564  0.0  0.5 323280 22312 ?        Ssl  Jun23   0:47 ./mysqld
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              interesting:
 
 [root@VM-GR-MYSQL-U1 ~]# /usr/local/mysql/bin/mysqld stop
 210624 13:36:55 [ERROR] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!
 
 210624 13:36:55 [ERROR] Aborting
 
 210624 13:36:55 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete
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              I know, I just think it's interesting that it stops as root
              
             
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              this is 5.1, so no packages anymore. That's the problem.
              
             
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              correction, it doesn't actually stop, it just says it stops. /facepalm
              
             
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              this was started via: 
 
 su mysql -c './mysqld'
 
 so, I don't think that's going to be much help. I don't think there's a service. but I'll give it a go for fun.
 
 The efficient thing to do would be kill -9 since there's no data here, but I figure I might as well know how to do this correctly
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              there we go:
 
 [root@VM-GR-MYSQL-U1 bin]# su mysql -c '/usr/local/mysql/bin/mysqladmin shutdown'
 [root@VM-GR-MYSQL-U1 bin]# ps aux | grep mysql
 root     19854  0.0  0.0 112812   976 pts/2    S+   16:15   0:00 grep --color=auto mysql