I tried to create a cluster with three Cassandra nodes on my machine.I have unpacked tar.gz and changed listen and rpc_addresses, also JMX_PORT.It did not work
~/apache-cassandra-3.11.1-1/bin$ nodetool -h 127.0.0.02 -p 8081 ring nodetool: Failed to connect to '127.0.0.02:8081' - ConnectException: 'Connection refused (Connection refused)'.
Then I followed ALex Ott;s adviced,installed ccm.Then I have problem again
ccm start Traceback (most recent call last): File "/home/jholmes/anaconda3/lib/python3.6/site-packages/ccm-3.1.3-py3.6.egg/ccmlib/common.py", line 513, in assert_socket_available OSError: [Errno 98] Address already in use During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/jholmes/anaconda3/bin/ccm", line 4, in <module> __import__('pkg_resources').run_script('ccm==3.1.3', 'ccm') File "/home/jholmes/anaconda3/lib/python3.6/site-packages/pkg_resources/__init__.py", line 750, in run_script self.require(requires).run_script(script_name, ns) File "/home/jholmes/anaconda3/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1534, in run_script exec(script_code, namespace, namespace) File "/home/jholmes/anaconda3/lib/python3.6/site-packages/ccm-3.1.3-py3.6.egg/EGG-INFO/scripts/ccm", line 105, in <module> File "/home/jholmes/anaconda3/lib/python3.6/site-packages/ccm-3.1.3-py3.6.egg/ccmlib/cmds/cluster_cmds.py", line 490, in run File "/home/jholmes/anaconda3/lib/python3.6/site-packages/ccm-3.1.3-py3.6.egg/ccmlib/cluster.py", line 389, in start File "/home/jholmes/anaconda3/lib/python3.6/site-packages/ccm-3.1.3-py3.6.egg/ccmlib/common.py", line 519, in assert_socket_available ccmlib.common.UnavailableSocketError: Inet address 127.0.0.1:7000 is not available: [Errno 98] Address already in use; a cluster may already be running or you may need to add the loopback alias
How to check address the availability?