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Ansible Notes (TODO: Move to a different page once done)
- Introduction information
- Ansible is an orchestration/automation tool, just like Chef or Pupper which are other alternatives to ansible, but ansible main advantage is that it can work through ssh, so target machines don't need ansible installed.
- ansible solves the problem of performing 'day-1' operations of infrastructure (installing os, dependency packages, network configurations, etc) source:DevOps: Difference between Ansible and orchestrators like Kubernetes - Stack Overflow
- Big advantage is that it uses declarative playbooks (define what you want done) instead of imperative scripting (define what you want and how).
day-0; get all of your infrastructure; hardware/public-cloud etc. day-1; use something like Ansible to setup the infrastructure components (EC2 nodes, hardware servers or GCE instances) day-2; install k8s on them to start running containerized workloads day-3; use k8s native mechanisms to deploy and manage and monitor applications
(Day 2 and 3 is ideal, but i think we will just deploy the containers through our build system not k8s)- Ansible can help with availability, and we will use it to test, like if an ioc needs another ioc to run for testing, specifying which machine and what resources, ansible should handle that deployment.
- Why Ansible
- Reduces complexity and runs anywhere.
- Lets you automate any task,
- How it works
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