Unable to open cqlsh Apache cassandra - ImportError: No module named cqlshlib

Question

I am new to cassandra ! Have downloaded the apacahe cassandra 2.1.2 package and initialy was able to connect to cqlsh but then after installing CCM i am unable to connect ,

Answer 1

Workaround:

I assume that you have already installed Cassandra and cqlshlib has been installed in /usr/lib/python2.7/site-packages/

`ln -s /usr/lib/python2.7/site-packages/cqlshlib /usr/local/lib/python2.7/site-packages/cqlshlib` 

(replace /usr/lib/python2.7/site-packages with your python directory).

More Detail:

One possibility is that your default python is not in /usr/bin/. Say it has been installed in /usr/local/bin/. However, Cassandra seems to install cqlshlib in /usr/lib/python2.7/site-packages for some reason. As a result, the default python cannot find cqlshlib package when you run cqlsh command.

Answer 2

If you're in the cassandra directory, run:

bin/cqlsh

If you check the cqlsh you're running with which cqlsh i suspect you're hitting the ccm one and missing something in your path.

Answer 3

The other answers correctly diagnose the problem. You need to find the correct cqlshlib. I had installed cassandra with apt get to Ubuntu, so the correct path for me was /usr/local/apache-cassandra-3.11.3/pylib

I had also messed things up by previously doing pip install cqlsh This is NOT supported by the apache team!

Like another answer here, I hacked the cqlsh.py file in /usr/bin

My successful hack was to replace the commented out line with the line below it.

#cqlshlibdir = os.path.join(CASSANDRA_PATH, 'pylib')
cqlshlibdir = "/usr/local/apache-cassandra-3.11.3/pylib"

Answer 4

Spent a couple of days, scouring the net moving renaming copying packages .

Easiest workaround for this error that worked :

pip install cqlsh

Answer 5

Just start cqlsh with root,

  sudo cqlsh <ipaddress>

Answer 6

You could export PYTHONPATH, to include site package folder where cqlshlib exists

First find the path where cqlshlib exists

find /usr/lib/ -name cqlshlib

Export the path using below variable name

export PYTHONPATH=/usr/lib/python2.7/site-packages/