Posts Tagged ‘cassandra’

Ansible: stop / start services on random hosts

In the coming weeks I’m performing some testing of a new application on a Cassandra cluster. To add a little randomness into some of the tests I thought it would be interesting to give the Cassandra service a little kick. I created a simple Ansible playbook this afternoon that does this. A simple Chaos Monkey […]

Staged service restart with Ansible

I’ve been working on a small project to create a Cassandra Cluster for Development purposes. I’m using Vagrant and Ansible to deploy a 5-node Cassandra Cluster and node #5 would always fail to join the cluster. I checked /var/log/cassandra/cassandra.log and this is what I found; INFO [InternalResponseStage:1] 2017-09-09 18:49:07,673 ColumnFamilyStore.java:406 – Initializing system_auth.roles INFO [main] […]

Cassandra 3 Node Cluster Setup Notes

Install on each node wget http://www-eu.apache.org/dist/cassandra/redhat/30x/cassandra-3.0.13-1.noarch.rpm yum install jre rpm -ivh cassandra-3.0.13-1.noarch.rpm chkconfig cassandra on Configuration changes on each node vi /etc/cassandra/conf/cassandra.yaml Customise the seeds / ip address for your environment cluster_name: ‘cassandra_cluster’ seeds: “192.168.65.120,192.168.65.121,192.168.65.122” listen_address: rpc_address: Start the cassandra service on each node service cassandra start service cassandra status If you get the following […]