Ansible: Making Ten Servers the Same, Safely

Checking that every server answers, installing a package everywhere with one command, and why running it twice should change nothing

Checking that every server answers, installing a package everywhere with one command, and why running it twice should change nothing.

What it covers

• Install nginx on Four Servers, Identically
• Modules, Playbooks and Idempotency
• Worked Example: Same Command Twice
• Notes, and Automation You Can Defend

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