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Phase 9 - Templates (Dynamic Configuration Files) - Coggle Diagram
Phase 9 - Templates (Dynamic Configuration Files)
Purpose
Generate configuration files dynamically.
Template Engine
Jinja2
Template Directory
templates/
httpd.conf.j2
nginx.conf.j2
sshd_config.j2
sudoers.j2
resolv.conf.j2
hosts.j2
report.j2
application.properties.j2
database.conf.j2
File Extension
.j2
Template Module
template
Variables in Templates
Double Curly Braces
inventory_hostname
ansible_hostname
ansible_fqdn
ansible_default_ipv4.address
server_name
package_name
Jinja2 Expressions
Variable Substitution
Mathematical Operations
Boolean Logic
Filters
Tests
Jinja2 Filters
default
upper
lower
title
replace
join
split
trim
length
unique
sort
reverse
first
last
to_json
to_yaml
Jinja2 Control Structures
if
elif
else
for
endfor
endif
Comments
Jinja2 Comments
YAML Comments
Whitespace Control
Trim Blocks
Strip Blocks
Enterprise Templates
Apache Configuration
Virtual Hosts
SSL
Logging
Security Headers
Nginx Configuration
Reverse Proxy
Load Balancer
SSL
Compression
SSH Configuration
Authentication
Security
Access Control
System Configuration
DNS
NTP
Hosts File
Firewall
Monitoring Configuration
Zabbix Agent
Prometheus Node Exporter
Telegraf
Application Configuration
Java
Python
PHP
Node.js
Report Generation
HTML Reports
CSV Reports
JSON Reports
YAML Reports
Template Validation
Syntax Check
Variable Validation
Configuration Testing
Enterprise Workflow
Create Template
Store in templates/
Pass Variables
Render Template
Copy to Remote Server
Validate Configuration
Restart Service
Verify Application
Generate Report
Best Practices
Never hardcode values.
Store data in variables.
Use group_vars and host_vars.
Keep templates reusable.
Validate configuration before restart.
Use version control.
Test in Development before Production.
Follow change management procedures.
Document every template.
Maintain backup before deployment.