Ansible
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How to Use Ansible Vault: Encrypt, Edit and Run Secrets
Encrypt secrets with ansible-vault create, encrypt_string and --vault-id, keep variable names greppable, and supply passwords at run time safely.
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Ansible and Terraform Together: Which Tool Owns Which Layer
Ansible configures hosts and runs operations, while Terraform provisions infrastructure. Compare their roles, overlap, and when to use both.
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ansible-playbook Options: Flags That Change a Run
A working reference to ansible-playbook flags for scope, preview, task selection and diagnostics, with the check-mode and precedence traps that bite.
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Ansible Inventory: Groups, Variables, and Patterns
How to structure an Ansible inventory: group hierarchies, where variables belong, how same-level groups merge, and the pattern syntax that scopes a run.
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Ansible Strategies: linear vs free vs host_pinned
Compare Ansible's linear, free, and host_pinned strategies: execution order, tradeoffs, forks, serial, and when each strategy fits.
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Ansible Playbook Execution: How Forks and Idempotence Work
How Ansible's agentless model executes a playbook, what the fork count really limits, why idempotence is a discipline, and where Vault secrets belong.