Question

我试图从我的python代码连接运行协议2的Cassandra 2数据库：

def auth_provider(ip):
    return dict(username=cassandra_username,
                password=cassandra_password)

def cassandradb():
    cluster =  Cluster(cassandra_cluster,
                       load_balancing_policy=RoundRobinPolicy(),
                       port=cassandra_port,
                       auth_provider=auth_provider)
    session = cluster.connect(cassandra_keyspace)
    ...

代码引发了异常：

cassandra.cluster.NoHostAvailable: 
    ('Unable to connect to any servers', 
       {'127.0.0.1': UnsupportedOperation('Credentials-based authentication 
        is not supported with protocol version 2 or higher.  Use the SASL
        authentication mechanism instead.',)})

我从未与SASL合作过。我应该如何更改auth_provider或其他代码？

Answer 1

https://datastax-oss.atlassian.net/browse/PYTHON-73

基于SASL的身份验证尚未在Python Driver 2.x中实现。您可以使用1.x驱动程序版本，该版本适用于所有最近的cassandra版本。

Answer 2

最近修补了驱动程序的主分支。以下是工作示例：

from cassandra.cluster import Cluster
from cassandra.auth import PlainTextAuthProvider

auth_provider = PlainTextAuthProvider(username='cassandra', 
                                      password='cassandra')
cluster = Cluster(auth_provider=auth_provider)

使用SASL进行Python Cassandra 2身份验证

2 个答案: