Purpose of the repository is to provide a basic instruction set
for creating a ready to deploy Mongo database server instance
I have split the code base into two folders packer and terraform follow the first set
of instructions to create a digital snapshot of an Ubuntu 18.04 server with Mongo server installed
go to the section labled Terraform to deploy 1 or many instances.
This code base was run on a Digital Oceans Ubuntu 18.04 x64 server droplet
The installion of the Hashicorp Packer software is stepped through here :
FIRST
change directory cd to packer
Be sure to replace the text string in variables.json file with your Digital Oceans
API token
Then from your terminal in the project root you can run
packer validate -var-file=variables.json template.json
packer build -var-file=variables.json template.jsonThe following image is what you should see at the end of the packer build
IMPORTANT please note at the bottom of the terminal return is (ID: xxxxxxxxxxx)
Be certain to record that number down as it will be needed to identify this snapshot
when you want to deploy this image using Hashicorp Terraform
The digital oceans console should have the snapshot image
Well for one it produces more stable consistent deployments, your environments are always the same
Tools like Packer Terraform Ansible all work to provide the same base everytime, repeatable and capable of being automated.
I'll leave you with an amazing speach given about the benefits
This code base was run on a Digital Oceans Ubuntu 18.04 x64 server droplet The installion of the Hashicorp Packer software is stepped through here :
FIRST change directory cd to terraform
Be sure to replace the text string in definitions.tfvars file with your Digital Oceans
API token and your ssh_fingerprint, sprcify the number of instances in instance_count
and lastly modify the comment and number in d0_snapshot_id to only the number value of the snapshot you created with packer
Then from your terminal in the project terraform directory you can run
terraform init
terraform validate
terraform plan -var-file="definitions.tfvars"
terraform apply -var-file="definitions.tfvars"
If after you are finished and no longer need the asset you have created you can easily run
terraform destroy -var-file="definitions.tfvars"