Intermediate
Configuration & Template Automation
Structured data, rendered through Jinja2 templates, into reviewed and validated configuration — extending Reliable Automation's safe-deployment pipeline.
Hardcoded, copy-pasted configuration strings stop working past a handful of devices, and this module teaches the alternative: structured data rendered through a Jinja2 template into configuration you can review before it ever touches a device. You'll install Jinja2, render your first configuration snippet from a Python dict, use {% for %} and {% if %} to generate one config block per item in a list, and model something like multiple VLANs as structured template input. The closing project combines all of it -- structured inventory, a real template, and Reliable Automation's retry and dry-run pipeline -- into one safe, template-driven configuration tool.
Next up
Why Templates Matter
0 / 6 completeLessons
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Why Templates Matter
Why hardcoded, copy-pasted configuration strings stop working past a handful of devices — and the progression this module builds toward: structured data, rendered through a template, into a reviewed, safely-deployed configuration.
Intermediate11 min readNext up - 2
Jinja2 Fundamentals Through Network Examples
Installing Jinja2, and rendering a first real device configuration snippet from a Python dict using {{ }} expressions — this curriculum's first external Python package since Netmiko.
Intermediate12 min read - 3
Structured Data as Template Input
Modeling a device's multiple VLANs as a list of dicts — the same structured-data shape from earlier in this curriculum, now serving as a template's input instead of just program logic.
Intermediate10 min read - 4
Loops and Conditions for Repeated Configuration
{% for %} and {% if %} inside a Jinja2 template — generating one configuration block per item in a list, conditionally, plus a real whitespace gotcha every Jinja2 beginner hits and how to fix it.
Intermediate14 min read - 5
Rendering, Validating, and Reviewing Configuration Safely
Loading a template from its own .j2 file, and why rendered configuration must be validated before it's ever considered for deployment — rendering without an error is not the same as rendering correctly.
Intermediate13 min read - 6
A Template-Based Configuration Automation Project
The capstone lesson: structured inventory, a real Jinja2 template, per-device rendering, rendered-config validation, and Reliable Automation's exact retry/dry-run/post-check pipeline, assembled into one safe, template-driven VLAN configuration tool.
Intermediate18 min read