ansible-dynamic-inventory

This repository shows a step-by-step approach of implementing Ansible Dynamic inventory.

Pre-requisite

To simulate VM's we are using Docker, so Docker is the only pre-requisite. Also you have to build the docker images for control server and target VM's

    make build

High Level Flow

We are simulating Dynamic inventory in 3 steps:

• Step 1
  • Create initial setup with an Ansible control server and 2 VM's (vm1 & vm2)
  • Use anible ping module to validate if control server can talk to 2 VM's
• Step 2
  • Add 3 more VM's(vm3, vm4 & vm5) in the overall setup
  • Use ansible ping module to validate if control server can talk to all VM's
• Step 3
  • Delete 2 VM's(vm1 & vm2) in the overall setup
  • Use ansible ping module to validate if control server can talk to remaining VM's(vm3, vm4 & vm5)

Detailed Flow

We will be doing a gradual move to dynamic inventory solution

• Implement dynamic inventory by updating static inventory file as per chaning infrastructure

cd static_inventory
make run-simulation

• Implement dynamic inventory by replacing inventory file via corresponding json file but still changing inventory file as per changing infrastructure

cd json_static_inventory
make run-simulation

• Implement dynamic inventory by replacing inventory file via a bash script, but still the bash script will be updated as per changing infrastructure

cd dynamic_inventory_sol1
make run-simulation

• Implement dynamic inventory by replacing inventory file via a bash script, this bash script will actually get the VM details at runtime

cd dynamic_inventory_sol2
make run-simulation