Terraform cont

Installing in virtual machines/ec2 instances

• All the clouds have cloud-init enabled and this is recommended. Cloud-init is executed only once during machine creation. Refer Here for the changes done.
• Other option is use provisioning which is not recommened
• Terraform has provisioners of three types
  • file: This is used to copy files or folders from the machine where terraform is runnning into machine created by terraform
  • local-exec: This will execute a command/script locally on the machine where terraform is running
  • remote-exec: This will execute a command/script remotely on the machine create by terraform
• Whenever the provisioner needs to connect to a remote machine it requires a connection
• Connection arguments
• Refer Here for the changes
• Provisioners will be executed only when the resource is created. If you want to trigger provisioners, we have to re create resources, in terrform there is null_resource
• Refer Here for the changes done to handle script execution