啟動 ：sudo /usr/local/MySQL/support-files/mysql.server start
Starting MySQL

出現(xiàn)問題：
./usr/local/mysql/bin/mysqld_safe: line 680: ulimit: open files: cannot modify limit: Invalid argument
/usr/local/mysql/bin/mysqld_safe: line 198: 18787 Trace/BPT trap: 5 nohup /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/log/mysqld.log --open-files-limit=65535 --pid-file=/usr/local/mysql/mysql.pid --socket=/tmp/mysql.sock --port=3306 < /dev/null > /dev/null 2>&1
ERROR! The server quit without updating PID file (/usr/local/mysql/mysql.pid).

去看了這個/var/log/mysqld.log是空的。