Stack Overflow
Stack Overflow

Questions tagged [ccm]

Cassandra Cluster Manager (CCM) is a tool to create and destroy Apache Cassandra clusters for testing purposes. Use this tag for specific question about the tool or questions about cluster created by the tool (that can differ from a production layout).

32 questions
2
votes
1 answer

Inet address 127.0.0.1:9042 is not available when use ccm start

I use CCM to create a three node Cassandra cluster on a single machine. When I use ccm start at a linux terminal, I see this error: ccmlib.common.UnavailableSocketError: Inet address 127.0.0.1:9042 is not available: [Errno 98] Address already in…
Mohammad eng
  • 21
  • 4
2
votes
0 answers

Scala application using spark cassandra connector hangs

I am developing a test application in Intellij using scala and spark cassandra connector. Here is my build.sbt code: scalaVersion := "2.11.8" libraryDependencies += "org.apache.spark" %% "spark-core" % "1.6.1" libraryDependencies +=…
renuka bedre
  • 21
  • 1
2
votes
0 answers

ccm cannot connect to nodetool, it throws connection refused

I am using ccm with cassandra 2.0.9. I have 8 nodes virtually in ccm. when i try to connect to node1 status it shows following error rishi@rishi:~/work/ccm$ ccm node1 status Traceback (most recent call last): File "/usr/local/bin/ccm", line 5, in…
Rishikesan Varudharajan
  • 693
  • 5
  • 20
2
votes
0 answers

CCM add node to a cluster - ccmlib.node.TimeoutError 20 Mar 2016 05:22:05 [n1] Missing: ['127.0.1.2.* now UP']:

I tried to add a new node in a cluster with one node already, getting the same error as landim $ ccm status Cluster: 'cluster2' n1: UP $ ccm add n2 -i 127.0.1.2 -j 7200 $ ccm status Cluster: 'cluster2' n1: UP n2: DOWN (Not…
Dinesh
  • 124
  • 7
1
vote
2 answers

ccm start Address already in use; a cluster may already be running or you may need to add the loopback alias

I'm struggling starting Cassandra cluster with 'ccm start' command. I created a cluster named Gdelt, with 3 nodes, as follow: ccm status gives: Cluster: 'Gdelt' ------------------- node1: DOWN (Not initialized) node3: DOWN (Not initialized) node2:…
twister9458
  • 29
  • 1
  • 1
  • 7
1
vote
1 answer

ssl.SSLError: ('No cipher can be selected') When Trying to Set TLS1.3 Cipher Suites in Python SSL

I am having a problem when trying to set TLS1.3 ciphers for ssl contexts in python, particularly 'TLS_AES_128_CCM_SHA256'. OS: Windows 7 Python version: 3.7.4 OpenSSL version: 1.1.1c By default, when i'm not setting cipher suites, it can be seen in…
EladZ
  • 11
  • 1
  • 2
1
vote
0 answers

how can I find out the configuration of a cassandra cluster created using ccm

I have created two clusters locally using ccm. .\ccm.py create test -v 3.11.1 .\ccm.py create test2 -v 2.1.2 I can list the different clusters using list argument in ccm but I am unable to find out which argument I should use to check which…
Manu Chadha
  • 15,555
  • 19
  • 91
  • 184
1
vote
2 answers

how do I run ccm (Cassandra Cluster Manager) command on windows

I have followed the instructions on Datastax's website to install ccm. - https://www.datastax.com/dev/blog/ccm-2-0-and-windows and https://pypi.org/project/ccm/3.1.4/ The ccm was installed successfully but when I try to run it, I get error that ccm…
Manu Chadha
  • 15,555
  • 19
  • 91
  • 184
1
vote
1 answer

What are the impacts of high value row cache?

Recently I have gone through a tutorial about key cache and row cache. Can anyone help me with some real time examples where these caches can impact? And what is the impact if we increase these values in the config file? On using desc table I found…
Yaswanth Adimulam
  • 11
  • 2
1
vote
0 answers

impacts of high value row cache?

Recently I have gone through a tutorial about key cache and row cache. Can anyone help me with some real time examples where these cache can impact? And what is the impact if we increase these values in config file? On using desc table I found…
ramya
  • 19
  • 5
1
vote
1 answer

CCM on Datastax Cassandra- Python 2.6 error and failure in creating local clusters

I installed CCM(Cassandra Cluster Manager) on Datastax CentOS that by default creates a reference to Python 2.6 . It started off with this error: I read it's a bug and so changed { } to {0} in the necessary .py files so Python 2.6 can take correct…
Ashwini
  • 41
  • 8
1
vote
0 answers

Running Cassandra unit tests in parallel using nose, ccm, python

I've recently started using Cassandra as a primary data store, and am trying to write unit tests for this using CCM I'm able to spin up a Cassandra Cluster instance and test one test class. I want to be able to test another test class in parallel…
Vinay Prasad
  • 11
  • 2
1
vote
1 answer

Using CCM with Opscenter and manual agent installation

I installed with CCM a 4 nodes local cluster (127.0.0.1-127.0.0.4). ccm create -v 2.1.5 -n 4 gp I'm trying to manually install the agents to use OpsCenter (5.2.3.2015121015). I started the OpsCenter removing the JMX port, so the configuration…
giampaolo
  • 6,906
  • 5
  • 45
  • 73
0
votes
0 answers

OpenCV: how to use ColorCorrectionModel class correctly

OpenCV has a ccm-module that contains the ColorCorrectionModel class. I try to use this class but some questions arise. There are four values that play an important role. Into the constructor (ColorCorrectionModel(src, ref, colorspace=sRGB) you have…
Peter
  • 3
  • 2
0
votes
2 answers

Cassandra ccm not installed as application on windows 10

I have installed cassandra ccm tool on my windows 10 machine, and it got installed in directory 'C:\Python27\Scripts': I have also added path to env variable PATH, but running ccm commands is not working: ccm create -h 'ccm' is not recognized as…
Mandroid
  • 6,200
  • 12
  • 64
  • 134
1
2 3