tmtsoftware/ansible-deployment-spike

Setting up VMs on macOS using Virtual box:

• Download and install Virtual box: https://www.virtualbox.org/wiki/Downloads
• Download centos 7 VM image: https://www.linuxvmimages.com/images/centos-7/
• Import the centos 7 image into virtual box
• We can go with the default configuration for network cards, RAM etc.
• After the image is imported, go to network settings and add following network adapters:
  • Bridged adapter (with en0 interface) (for communication between multiple VMs)
  • NAT adapter (for communication via host OS)
• Duplicate this image in order to create another VM
• Share host ssh keys with the VM so that Ansible is able to connect to VMs from host OS
• Disable the firewall on VMs using systemctl stop firewalld command as this would prevent location service cluster from forming. Alternatively, whitelist the VM IPs in firewall.

Running the ansible deployment on VMs

• Install ansible: https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html#installing-ansible-on-macos
• Replace the ip address in inventory.yml with the ip address of VMs that are started (can be found using ifconfig command on VM)
• Replace the ip of seed node VM in CLUSTER_SEEDS env variable in playbook.yml
• Copy the contents of inventory.yml to /etc/ansible/hosts
• Run ansible playbook using command ansible-playbook <path to playbook.yml> --extra-vars "@<path to deploy_versions.json>"

Ansible playbook contains the task that are to be executed on the target nodes. This includes:

• Download and install coursier
• Install Java and setup path env
• Install and launch location service cluster using one VM as seed node
• Install and launch config service on one VM
• Install and launch agent app on both VMs

Host specific variables like machine_name are defined in the inventory file.

Variables for versions (csw-version and esw_version) are defined in the deploy_versions.json file.