Django: Exception Value (2013, '2013: Lost connection to MySQL server during query', None)

问题

Recently I have upgraded Django from version 1.6.5 to 1.7.1 and mysql-connector-python from 1.x to 2.0.2 After upgrading, the Exception(2013) is raised most of the time I make a query.

Exception Type: InterfaceError
Exception Value: (2013, '2013: Lost connection to MySQL server during query', None)

I have added some settings about 'CONN_MAX_AGE', 'wait_timeout' but it does not help. Here are my settings:

From command line:

C:/>pip freeze
Django==1.7.1
South==1.0.1
mysql-connector-python==2.0.2
.....
C:/python -c "import django; print(django.get_version())"
1.7.1

From settings.py:

DATABASES = {
    'default': {
        'ENGINE': 'mysql.connector.django', 
        'NAME': 'djangodb',
        'USER': 'djangodb',
        'PASSWORD': '******',
        'HOST': '********',   
        'PORT': '3306',
        'CONN_MAX_AGE' : 600,
    }
}

MySQL settings:

show variables like 'wait_timeout'; #=>28800
show variables like 'net_read_timeout'; #=>30

views.py:

@user_passes_test(lambda u: u.is_superuser)
def db(request, table):
    from django.db import connection
    cursor = connection.cursor()

    if table == "table_status":
        cursor.execute("SHOW TABLE STATUS")       #No exception 4/5 times
    elif table == "processlist":
        cursor.execute("SHOW PROCESSLIST")        #No exception 4/5 times
    elif table == "status":
        cursor.execute("SHOW STATUS")             #No exception 4/5 times
    elif table == "variables":
        cursor.execute("SHOW VARIABLES")          #Exception is raised 49/50 times

    if(cursor):    
        data = cursor.fetchall()
        description = cursor.description
        cursor.close()
        return render_to_response("myadmin/table.html", {"title": table, "headers":description,"data":data})
    else:
        return render_to_response("ajax/error404.html")

Please help me fix the problem.

回答1:

Ok. I did some digging around, and it looks like this is a known issue with Django 1.7 and version 2.0.2 of mysql-connector-python.

The bug is marked as "resolved" in version 2.0.3, but is not released yet.

EDIT: Downgrading to version 1.2.3 has been reported as a temporary solution by OP:

pip install -U --allow-external mysql-connector-python mysql-connector-python==1.2.3

来源：https://stackoverflow.com/questions/27309187/django-exception-value-2013-2013-lost-connection-to-mysql-server-during-que

标签

python

mysql

django

database-connection

django-1.7