A simple vagrant-based Test-Environment of a 4-node-Cassandra-Cluster and a separate box for the Datastax OpsCenter.
#Startup To initialize the vagrant boxes and startup the cassandra cluster:
cd cassandra
vagrant up
This will fetch the Ubuntu 14.04. image if not exist, start all nodes (ops and node 1-4) and install them with all neccessary stuff.
The single boxes are named ops, node1, node2, node3 and finally node4. (node1 and node2 are configured as cassandra seed instances) In case, you'll have to startup a single instance, you can use:
vagrant up <node-name>
#Working To connect to a single instance, you'll have to use:
vagrant ssh <node-name>
##Cassandra Boxes To check, if everything's fine with the cluster, try:
nodetool status
on any box.
To restart a single cassandra instance, use:
/etc/init.d/cassandra stop|start|restart
##OPSCenter The port of the OPSCenter - 8888 - is forwarded to the host. To open the OPSCenter use a local browser:
http://localhost:8888
If you call the OPSCenter the first time, you'll have to configure the existing Cluster. Therefore choose 'manage an existing cluster' at the 1st dialog and use an IP of the cluster (i.e. 192.168.2.110 and 192.168.2.120). After that you'll have to install the agents. (Use the 'fix' link at the top of the dashboard). The Credentials of the needed ssh-users are vagrant/vagrant.
Enjoy C* !