我在一个EC2实例上安装了opsworks，并在cassandra集群中创建了三个节点。
节点上的代理将无法安装，我收到以下错误
Install Errored: 'apt-get update' failed
exit status: 100
stderr:
W: Failed to fetch http://debian.datastax.com/enterprise/dists/stable/main/binary-amd64/Packages 401 Unauthorized [IP: 54.69.121.19 80]
W: Failed to fetch http://debian.datastax.com/enterprise/dists/stable/main/binary-i386/Packages 401 Unauthorized [IP: 54.69.121.19 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.