我有一个使用sqlalchemy的网站，我安装了MySQL 5.6.17 当我在Linux Ubuntu上运行我的应用程序时，出现错误：
sqlalchemy.exc.OperationalError :( OperationalError）（2002，＆＃34; Can＆＃39; t 通过套接字连接到本地MySQL服务器 ＆＃39; /var/run/mysqld/mysqld.sock' （111）＆＃34;）无无
我的/opt/mysql/server-5.6/my.cnf文件如下所示：
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
[mysqld]
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# These are commonly set, remove the # and set as required.
# basedir = .....
# datadir = .....
# port = .....
# server_id = .....
# socket = .....
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES