Cassandra Module

Description

This module creates a Cassandra cluster. The module is based upon the following white paper:

https://d0.awsstatic.com/whitepapers/Cassandra_on_AWS.pdf

Variables

Name	Description	Default
app_name	application name
availability_zones	comma separated list of AZs
az_count	number of AZs to span
backup_hour	crontab hour for backup
backup_minute	crontab minute for backup
backup_retention	backup retention period in days	7
bastion_ip	bastion IP address for ssh access
bastion_private_key	local path to ssh private key for bastion access
cassandra_version	version of Cassandra	3.9
cloudwatch_alarm_arn	cloudwatch alarm ARN
commit_log_device_name	attach device for commit log volume	/dev/xvdg
commit_log_mount_point	mount point for commit log volume	commitlog
data_device_name	attach device for data volume	/dev/xvdf
data_dir	data directory for Docker mount	/var/lib/cassandra
data_mount_point	mount point for data volume	data
environment	environment to configure
iam_instance_profile	IAM instance profile name to allow nodes to create EBS snapshots
key_name	key pair for SSH access
nodes_per_az	number of non-seed nodes per AZ
nonseed_commitlog_volume_ids	list of non-seed commitlog volume IDs
nonseed_data_volume_ids	list of non-seed data volume IDs
private_key	local path to ssh private key
region	region to configure
security_group_ids	list of security groups
seed_addr	network number for seed IP
seed_commitlog_volume_ids	list of seed commitlog volume IDs
seed_data_volume_ids	list of seed data volume IDs
seed_subnet_ids	list of subnet IDs for seed nodes (/24 CIDR)
stdenv	environment lookup to use
subnet_ids	list of subnet IDs for non-seed nodes

Outputs

Name	Description
node_ips	comma separated list of node IP addresses

Tests

The test documentation can be found in test/main.tf.