Python Cassandra 驱动程序未安装，或未安装在 Ubuntu 上的 PYTHONPATH 上

Question

我正在尝试执行 ./cqlsh 。但它给出了以下错误:

Python Cassandra driver not installed, or not on PYTHONPATH.
You might try "pip install cassandra-driver".

Python: /usr/local/bin/python
Module load path: ['/home/ubuntu/Downloads/apache-cassandra-3.11.2-bin/apache-cassandra-3.11.2/bin/../lib/six-1.7.3-py2.py3-none-any.zip', '/home/ubuntu/Downloads/apache-cassandra-3.11.2-bin/apache-cassandra-3.11.2/bin/../lib/futures-2.1.6-py2.py3-none-any.zip', '/home/ubuntu/Downloads/apache-cassandra-3.11.2-bin/apache-cassandra-3.11.2/bin/../lib/cassandra-driver-internal-only-3.11.0-bb96859b.zip/cassandra-driver-3.11.0-bb96859b', '/home/ubuntu/Downloads/apache-cassandra-3.11.2-bin/apache-cassandra-3.11.2/bin', '/usr/local/lib/python27.zip', '/usr/local/lib/python2.7', '/usr/local/lib/python2.7/plat-linux2', '/usr/local/lib/python2.7/lib-tk', '/usr/local/lib/python2.7/lib-old', '/usr/local/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/site-packages']

Error: can't decompress data; zlib not available

我已经安装了python、zlib、cassandra-driver，但是上面的错误仍然存​​在。

Answer 1

如果您下载了 Cassandra 的 tarball 版本并正确解压缩，我唯一可以假设的是您的副本已损坏/不完整。
今年早些时候，我在 Apache 网站 (CASSANDRA-15466) 上修改了 Cassandra 安装说明。
如果您在干净的 Ubuntu 18.04 或 20.04 服务器上逐字按照安装说明进行操作，它将首次工作，每次 - https://cassandra.apache.org/doc/latest/getting_started/installing.html#installing-the-binary-tarball .干杯!