Template Builder Dependencies

Dependency Sets for Template Builder

There are two sets of dependencies for Template Builder. The first set, python, textfsm, and jinja2, are required for Template Builder to function. The second set, chroot, sudo, and ldd are required to allow Template Builder to execute Jinja2 templates in a contained context. Without this second set of dependencies available and the appropriate configuration in place to allow the IAP process to execute them in a subshell, Jinja2 templates will have access to environment variables from the parent process and the file system. It is highly recommended that you configure Template Builder to execute Jinja2 templates in a contained context.

Installing the Base Dependencies

To install base dependencies:

1. Install Python 3.

   Note: Starting with Python version 3.4, pip has been included as part of the Python installers.

   sudo yum install -y python3
   

2. Verify the Python version installed.

   python3 --version
   

3. Verify pip3 version installed.

   pip3 --version
   

4. Run the following commands. Once TextFSM and Jinja2 are available, the template parser will be able to function properly.

   sudo pip3 install textfsm
   sudo pip3 install jinja2
   

5. Verify the versions of Jinja2 and TextFSM installed.

   pip3 freeze