解决阿里云数据导入自建数据库过程中，导入出错的问题

• mysql配置改进：vim /etc/my/cnf

  [mysqld]
  datadir=/var/lib/mysql
  socket=/var/lib/mysql/mysql.sock
  secure_file_priv=''
  max_allowed_packet = 10M
  character-set-server = utf8mb4
  collation-server = utf8mb4_general_ci
  #collation-server = utf8mb4_unicode_ci
  character-set-client-handshake = FALSE
  character-set-server = utf8mb4
  init_connect=’SET NAMES utf8mb4’
  [client]
  default-character-set = utf8mb4
  [mysql]
  default-character-set = utf8mb4