This post will be a very short one, more like a note :)
Based on the LFNE Docker images (explained here https://ipnet.xyz/2023/11/lfne-linux-for-network-engineers) I’ve created the GNS3 Appliances for easy import into GNS3.
The GNS3 Appliances can be downloaded here https://github.com/yotis1982/lfne and imported into GNS3.
Have fun!
Formerly known as PFNE – Python For Network Engineer, the images developed to be more than just for Python learning. My choice was to call the new one more generic and pick the Linux For Network Engineers (LFNE)
Linux images build with all tools need by network engineers to perform various tasks ranging from simple python script to automation and testing.
Below is the list of installed applications on LFNE images. Pull one and start experimenting.
I’m using two main distributions to build these images – Ubuntu and AlmaLinux – pick your favorite flavor. I picked AlmaLinux as is the closest distribution to now (almost) defunct Centos.
LFNE based on Ubuntu 22.04
Pull the image:docker pull yotis/lfne:ubuntu-22.04
Use the image:docker run -i -t yotis/lfne:ubuntu-22.04 /bin/bash
If used with Portainer don’t forget to activate the option for Console : Interactive & TTY
LFNE based on AlmaLinux 9.2
Pull the image:docker pull yotis/lfne:almalinux-9.2
Use the image:docker run -i -t yotis/lfne:almalinux-9.2 /bin/bash
If used with Portainer don’t forget to activate the option for Console : Interactive & TTY
Some of the installed packages:
Openssl
Net-tools (ifconfig…)
IPutils (ping, arping, traceroute…)
Socat
Host (DNS lookup tool)
Mtr (traceroute tool)
Telnet / SSH client
IProute2
IPerf (traffic generator)
TCPDump
Nmap
Python 2 (only on Ubuntu variant)
Python 3
Paramiko
Netmiko
Ansible
Pyntc
Napalm
Openssh Server
To use remote ssh connection to container
I needed an instance of Openstack in my home lab for some tests and the first attempt was to deploy it with DevStack all-in-one. Is one of the most common methods out there. However it kept on failing (still need to find out why), so I turned to MicroStack.
MicroStack describe itself as the most straightforward way to install Openstack. I don’t say this is the way to go for Enterprise grade installation, but would do if you want something simple like one or two nodes for testing, learning purposes.
MicroStack uses two commands to have an Openstack instance up and running:
sudo snap install microstack --beta $ sudo microstack init --auto --control
You can read a more detailed “how-to” on the Ubuntu or MicroStack page. One note, the entire topic is in Beta stage.
I’ve tried deploying multiple time on fresh Ubuntu 20.04 installation and everytime I’ve ended up with the error below. I’m adding the entire text, just in case you encounter an error at certain installation stage and want to check if is the same like mine:
sudo microstack init --auto --control
2022-11-02 20:21:19,950 - microstack_init - INFO - Configuring clustering ...
2022-11-02 20:21:20,454 - microstack_init - INFO - Setting up as a control node.
2022-11-02 20:21:24,066 - microstack_init - INFO - Generating TLS Certificate and Key
2022-11-02 20:21:26,187 - microstack_init - INFO - Configuring networking ...
2022-11-02 20:21:42,675 - microstack_init - INFO - Opening horizon dashboard up to *
2022-11-02 20:21:43,807 - microstack_init - INFO - Waiting for RabbitMQ to start ...
Waiting for 172.31.82.163:5672
2022-11-02 20:21:56,629 - microstack_init - INFO - RabbitMQ started!
2022-11-02 20:21:56,629 - microstack_init - INFO - Configuring RabbitMQ ...
2022-11-02 20:21:58,753 - microstack_init - INFO - RabbitMQ Configured!
2022-11-02 20:21:58,953 - microstack_init - INFO - Waiting for MySQL server to start ...
Waiting for 172.31.82.163:3306
2022-11-02 20:23:08,775 - microstack_init - INFO - Mysql server started! Creating databases ...
2022-11-02 20:23:14,509 - microstack_init - INFO - Configuring Keystone Fernet Keys ...
2022-11-02 20:26:07,658 - microstack_init - INFO - Bootstrapping Keystone ...
2022-11-02 20:26:21,999 - microstack_init - INFO - Creating service project ...
2022-11-02 20:26:27,938 - microstack_init - INFO - Keystone configured!
2022-11-02 20:26:28,257 - microstack_init - INFO - Configuring the Placement service...
2022-11-02 20:26:49,572 - microstack_init - INFO - Running Placement DB migrations...
2022-11-02 20:27:09,282 - microstack_init - INFO - Configuring nova control plane services ...
2022-11-02 20:27:22,369 - microstack_init - INFO - Running Nova API DB migrations (this may take a lot of time)...
2022-11-02 20:29:02,089 - microstack_init - INFO - Running Nova DB migrations (this may take a lot of time)...
Waiting for 172.31.82.163:8774
2022-11-02 20:39:31,994 - microstack_init - INFO - Creating default flavors...
2022-11-02 20:39:59,738 - microstack_init - INFO - Configuring nova compute hypervisor ...
2022-11-02 20:39:59,738 - microstack_init - INFO - Checking virtualization extensions presence on the host
2022-11-02 20:39:59,756 - microstack_init - WARNING - Unable to determine hardware virtualization support by CPU vendor id "GenuineIntel": assuming it is not supported.
2022-11-02 20:39:59,756 - microstack_init - WARNING - Hardware virtualization is not supported - software emulation will be used for Nova instances
2022-11-02 20:40:06,690 - microstack_init - INFO - Configuring the Spice HTML5 console service...
2022-11-02 20:40:08,564 - microstack_init - INFO - Configuring Neutron
Waiting for 172.31.82.163:9696
Traceback (most recent call last):
File "/snap/microstack/245/bin/microstack", line 11, in <module>
load_entry_point('microstack==0.0.1', 'console_scripts', 'microstack')()
File "/snap/microstack/245/lib/python3.8/site-packages/microstack/main.py", line 44, in main
cmd()
File "/snap/microstack/245/lib/python3.8/site-packages/init/main.py", line 60, in wrapper
return func(*args, **kwargs)
File "/snap/microstack/245/lib/python3.8/site-packages/init/main.py", line 228, in init
question.ask()
File "/snap/microstack/245/lib/python3.8/site-packages/init/questions/question.py", line 210, in ask
self.yes(awr)
File "/snap/microstack/245/lib/python3.8/site-packages/init/questions/__init__.py", line 887, in yes
check('openstack', 'network', 'create', 'test')
File "/snap/microstack/245/lib/python3.8/site-packages/init/shell.py", line 69, in check
raise subprocess.CalledProcessError(proc.returncode, " ".join(args))
subprocess.CalledProcessError: Command 'openstack network create test' returned non-zero exit status 1.
I’ve did some research and I found some hints about the need to manually install Python on a fresh Ubuntu 20.04 instance:
sudo apt install python python-dev
After installing Python all worked like a charm:
sudo microstack init --auto --control # Skipped text # 2022-11-02 21:18:18,159 - microstack_init - INFO - Configuring the Spice HTML5 console service... 2022-11-02 21:18:19,503 - microstack_init - INFO - Configuring Neutron Waiting for 172.31.82.163:9696 2022-11-02 21:19:21,615 - microstack_init - INFO - Configuring Glance ... Waiting for 172.31.82.163:9292 2022-11-02 21:20:53,119 - microstack_init - INFO - Adding cirros image ... 2022-11-02 21:20:57,002 - microstack_init - INFO - Creating security group rules ... 2022-11-02 21:21:09,046 - microstack_init - INFO - Configuring the Cinder services... 2022-11-02 21:22:10,868 - microstack_init - INFO - Running Cinder DB migrations... 2022-11-02 21:23:31,155 - microstack_init - INFO - restarting libvirt and virtlogd ... 2022-11-02 21:23:42,260 - microstack_init - INFO - Complete. Marked microstack as initialized!
For some reason the MicroStack initialization process doesn’t detect Python installation or more like it the lack of.
If you have this error during installation, let me know if manual Python installation does the job.
This is an identical copy of my Ubuntu 20.04 PFNE Docker image, developed to be imported and used on EVE-NG (works also on the Community edition because it doesn’t need Docker support).
It contains all necessary tools for network engineers to test automation and learn Python. If you think a tool would be suitable to be added to this edition, please let me know in Comments below:
Openssl
Net-tools
IPutils
IProute
IPerf
TCPDump
NMAP
Python 2
Python 3
Paramiko
Netmiko
Ansible
Pyntc
NAPALM
Netcat
Socat
If you know how to install and use the image, please use the direct download link: Ubuntu 20.04 PFNE for EVE-NG.
For beginners of EVE-NG, here are all the steps to get you going:
cd /opt/unetlab/addons/qemu/
tar xzvf linux-ubuntu-server-20.04-pfne.tar.gz
rm -f linux-ubuntu-server-20.04-pfne.tar.gz
/opt/unetlab/wrappers/unl_wrapper -a fixpermissions
The image comes with the following predefined username and password:
User: root Password: root User: pfne Password: pfne
Add it to your topology in EVE-NG and let me know how it works.
This is an updated Docker image of Python For Network Engineers (PFNE) based on Ubuntu 20.04 (minimal server distro).
It contains all necessary tools for network / devops engineers to test automation and learn Python:
Openssl
Net-tools
IPutils
IProute
IPerf
TCPDump
NMAP
Python 2
Python 3
Paramiko
Netmiko
Ansible
Pyntc
NAPALM
Netcat
Socat
If you notice a missing package which could be a value added for the scope of the Ubuntu PFNE image, please let me know in comments below.
Before testing the new Ubuntu 20.04 PFNE Docker image, please pull it from Docker Hub:
docker pull yotis/ubuntu2004-pfne
To start using it:
docker run -i -t yotis/ubuntu2004-pfne /bin/bash
For more details about how to install, operate and create your own Docker images, please check my older article on How to create your own Docker image.