After installing lnmp, I found mysql did not play.
$ service mysql
Error:
Starting MySQL
.. * The server quit without updating PID file (/usr/local/mysql/var/5f6d62dfb7d8.pid).
Solution:
mkdir / var / lib / mysql
or
touch /usr/local/mysql/var/5f6d62dfb7d8.pid
# Failed: find / var / lib / mysql -type f -exec touch {} \;
reference: