1. Load you OpenStack application credentials to environment variables `source ~/conf/prod-egi-freznicek-vo.enes.org-all-roles-openrc.sh.inc`
1. Load you OpenStack application credentials to environment variables `source project_openrc.sh.inc`
1. Override any infrastructure variables in [main.tf](main.tf) file if needed. Full set of variables can be found in [modules/2tiers_public_bastion_private_vm_farm/variables.tf](modules/2tiers_public_bastion_private_vm_farm/variables.tf) or [modules/1tier-public-vm-farm/variables.tf](modules/1tier-public-vm-farm/variables.tf).
1. In the [terraform root directory](/clouds/g1/brno/vo.enes.org/terraform) run following commands to initiate and validate environment