MySQL问题：Starting MySQL/etc/init.d/mysql: line 159: kill: (21755) - No such process

问题：
Starting MySQL/etc/init.d/mysql: line 159: kill: (21755) - No such process解决办法

找到类似这样一行（我这里是304行）：
$bindir/mysqld_safe --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 &

改为（加上参数--user=root）：
$bindir/mysqld_safe --user=root --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 &

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