This script is used to pull config and state info from networking devices and save them to a specified directory on the host from which the script is run in an idempotent manner. The script will create a sub-directory for each device it is run against with each device's host name. A file for each command run is placed into this subdirectory - named according to the command run against the device. Afterwards, the script saves changes to GIT so that historic config/state data can be analyzed.
- Nornir is used for inventory management and paralell execution
- Nornsible is used to parse Nornir inventory down to only those devices against which the script should be run
- Netmiko is used to pull device config and state information
- Getpass pulls in password information before authenticating to devices if authentication info isn't stored elsewhere
- TermColor is used to print colored output to the screen. Yellow indicates file contents changed, Green indicates file contents did not change, Red indicates failure of the script to run against the host.
This script utilizes a few environment variables and nornir data elements
- The "NORNIR_CONFIG_FILE" environment variable is used to set the full location of the nornir config file
- The "CONFIGS_DIR" environment variable is used to set the directory to which config/state info should be written on the local host
- The "get_config_commands" nornir inventory object attribute contains a list of commands to be run against each device
Any device to which netmiko can initiate an SSH session with "netmiko_send_command" should work. I've only tested the script on cisco devices.