Deploy Neo4j HA Cluster on AWS/Eucalyptus

Harold Spencer Jr of Eucalyptus, technology partner of Neo Technology, walks through deploying a Neo4j High Available Cluster

Pre-requisites

In order to use this Ansible playbook on AWS/Eucalyptus, the following is needed:

• An AWS or Eucalyptus account, with a user’s access key and secret access key.
• EC2 IAM Policy to allow launching of instances, and authorize ports in security group
• Ubuntu Cloud Image (Precise 12.04)
• EC2 API Client Tools
• git repository tools

Before deploying the cluster, a security group needs to be created that the cluster will use.  The security group must allow the following:

• port 22 (SSH)
• all instances part of the security group allowed to community with each other (ports 0 – 65535)

To create the security group and authorize the ports, make sure the user’s access key, secret access key, and EC2 URL are noted, and do the following:

1. Create the security group

   ec2-create-group --aws-access-key <EC2_ACCESS_KEY> 
   --aws-secret-key <EC2_SECRET_KEY> 
   --url <EC2_URL> -g neo4j-cluster -d "Neo4j HA Cluster"

2. Authorize port for SSH in neo4j-cluster security group

   ec2-authorize 
   --aws-access-key <EC2_ACCESS_KEY> 
   --aws-secret-key <EC2_SECRET_KEY> 
   --url <EC2_URL> -P tcp -p 22 -s 0.0.0.0/0 neo4j-cluster 

3. Authorize all port communication between cluster members ec2-authorize –aws-access-key <EC2_ACCESS_KEY> –aws-secret-key <EC2_SECRET_KEY> –url <EC2_URL> -P tcp -o neo4j-cluster -p -1 neo4j-cluster

After completing these steps, use

ec2-describe-group

to view the security group:

ec2-describe-group –aws-access-key <EC2_ACCESS_KEY> –aws-secret-key <EC2_SECRET_KEY> –url <EC2_URL> neo4j-cluster GROUP sg-1cbc5777 986451091583 neo4j-cluster Neo4j HA Cluster PERMISSION 986451091583 neo4j-cluster ALLOWS tcp 0 65535 FROM USER 986451091583 NAME neo4j-cluster ID sg-1cbc5777 ingress PERMISSION 986451091583 neo4j-cluster ALLOWS tcp 22 22 FROM CIDR 0.0.0.0/0 ingress

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Keywords:  Ansible playbook • Eucalyptus • high availability