libpcap_echo_server

A simple echo vnf

The lifecycle management are defined in ETSI GS NFV-IFA 007. The events are implemented in the ansible/events folder

Install collection

The VNF uses a collection of ansible roles to set up the environment.

ansible-galaxy install -r ansible/requirements.yml

Create inventory

This can be a server or a local VM on your machine

1. Generate ssh key to use to run ansible without password.

ssh-keygen

# Copy the public key to the machine
cat ~/.ssh/local_rsa.pub | ssh [email protected] "mkdir ~/.ssh && cat >> ~/.ssh/authorized_keys"

2. Create inventory

The scenario and the plays depend on a host group libpcap. The group should the the VNF name. This will mean that wehn we have a number of VNFs on a host, their variables will be found under the VNFs group name.

Using .INI

[libpcap]
server1 ansible_host=192.168.122.185 ansible_user=olan ansible_ssh_private_key_file=~/.ssh/local_rsa

[libpcap:vars]
vnf_path=/home/libpcap_echo_server
receive_interface=eth2
send_interface=eth2

Using YAML

---
vnf_path: /home/libpcap_echo_server
receive_interface: eth2
send_interface: eth2

Test with molecule

You can run the test using molecule

cd ansible

molecule test

If you want to do some debug

cd ansible

# Run the tasks defined in molecule/converge
molecule converge

# ssh into the container
molecule login

# print the logs of the service
journalctl -o json-pretty -u olan-libpcap-echo-server

Useful Resources

• How to build your inventory
• Using Variables and their precedence