Cassandra playground

The repository contains short tutorial describing how to setup cassandra cluster on your local machine with Docker. Handy docker-compose.yaml is included, it is based on examples from DataStax.

Additionally it has some example CQL schemas and simple clients written in Python which make use of DataStax Cassandra driver.

Setup Cassandra cluster

Navigate to repository root folder
Tweak docker-compose.yaml settings (especially memory limits for nodes)
Get the Cassandra Docker images from docker hub (DSE = DataStax Enterprise, one of Cassandra distributions, free of charge for development use)
```
 docker pull datastax/dse-server:latest
 docker pull datastax/dse-studio:latest
```

Run DSE studio (management tool) and cassandra cluster with 4 nodes (one seed node and three others)

 docker-compose up --scale node=3

If you want to run docker containers in background (detached mode), try instead

 docker-compose up -d --scale node=3

Above command is similar to executing these two sets of commands, one for running the cluster

 docker run -e DS_LICENSE=accept -e JVM_EXTRA_OPTS="-Xms1g -Xmx4g" --name cassandra-node1 -d datastax/dse-server
 docker run -e DS_LICENSE=accept -e JVM_EXTRA_OPTS="-Xms1g -Xmx4g" -e SEEDS=cassandra-node1 --name cassandra-node2 --link cassandra-node1 -d datastax/dse-server 
 docker run -e DS_LICENSE=accept -e JVM_EXTRA_OPTS="-Xms1g -Xmx4g" -e SEEDS=cassandra-node1 --name cassandra-node3 --link cassandra-node1 -d datastax/dse-server
 docker run -e DS_LICENSE=accept -e JVM_EXTRA_OPTS="-Xms1g -Xmx4g" -e SEEDS=cassandra-node1 --name cassandra-node4 --link cassandra-node1 -d datastax/dse-server

and another for running the DataStax Studio

 docker run -e DS_LICENSE=accept -e JVM_EXTRA_OPTS="-Xms512m -Xmx1g" --link cassandra-node1 -p 9091:9091 --name dse-studio -d datastax/dse-studio

Shutdown the cluster and DSE studio
```
 docker-compose down
```

Useful commands

docker exec -it cassandra-playground_seed-node_1 nodetool status
docker exec -it cassandra-playground_seed-node_1 nodetool getendpoints shopping purchase_history 'Gdansk'

frenchu / cassandra-playground Goto Github PK