云服务器上mysql数据库环境安装配置

1.访问云服务器：云服务器端需在防火墙设置中添加mysql协议规则(放开端口默认为3306)。

2.访问云服务器：修改云服务器数据库访问权限

3.c#连接实例

 try
            {
                DataTable dt = new DataTable();
                string ConnectionStr = "server=" + "xxx.xxx.xxx.xxx" + ";User ID=root;Password=123456;database=mydatabase;Allow User Variables=True;SslMode=none;";
                MySqlConnection conn = new MySqlConnection(ConnectionStr);
                conn.Open();
                string sSQL = "select *from mytable2";
                MySqlCommand cmd = new MySqlCommand(sSQL, conn);
                MySqlDataReader dr = cmd.ExecuteReader();
                if (dr.HasRows)
                {
                    //读取MySqlDataReader里的内容  
                    dt.Load(dr);
                }
                //关闭对象和连接  
                dr.Close();
                this.dataGridView1.DataSource = dt;
            }
            catch(Exception ee)
            {
             
            }

4.my.ini文件实例

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.
[mysql]  
# 设置mysql客户端默认字符集  
default-character-set=utf8  

[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 =C:\mysql-5.6.40-winx64
datadir = C:\mysql-5.6.40-winx64\data
port = 3306
# server_id = .....

# 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