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Purpose
Fully provision and demonstrate a cloud based infrastructure in Amazon AWS with the following features:
- Customized AMI operating system images built in automated fashion using Packer
- Completely managed cloud infrastructure using Hashicorp Terraform
- Hashicorp Consul used as a service registry and health check utility
- Hashicorp Consul template installed to integrate with Consul to generate application configuration templates based on service availability and health
Requirements and Assumptions
Packer & Terraform installed
An existing Amazon AWS account
AWS credentials stored in ~/.aws/credentials in the following format:
[default]
aws_access_key_id=AKIAIOSFODNN7EXAMPLE
aws_secret_access_key=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
The user executing Packer build will be provisioned within the generated ami.
Also, it assumes the user has an existing public key in ~/.ssh/id_rsa.pub
Packer usage
Use packer directory as working directory. Takes ~5 minutes to build 3 ami's in parallel.
packer build packer.json
Terraform usage
Use terraform directory as working directory.
Copy terraform.tfvars.example to terraform.tfvars and enter your information there.
# apply terraform modules
terraform get
# execute plan to verify changes to be performed
terraform plan
# apply changes
terraform apply
Outputs from successfully terraform apply shown below
tip: setup iTerm to allow clickable links
Graph generated by terraform graph | dot -Tpng > graph.png
Vault
See Vault.md for further notes related to Vault