Making scalable dynamic configuration changes

While the preceding examples resolve many of the challenges of making automated configuration changes at scale in an enterprise, it is noticeable that our final example was somewhat inefficient. We deployed a static, version-controlled configuration file, and made a change to it using the lineinfile module again.

This allowed us to insert an Ansible variable into the file, which in many instances is incredibly useful, especially when configuring more complex services. However, it is—at best—inelegant to split this change across two tasks. Also, reverting to the use of the lineinfile module again exposes us to the risks we discussed earlier and means we would need one lineinfile task for every ...

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