Hey h! Thanks so much. I really appreciate it. Trying my best to give out real world practical info!! :) -John

Thanks so much, Aslan! I really appreciate it! :) -John

Hey Al! Good to hear your feedback again! About EVE-NG, I can upload the topology no problem, although there isn't really anything too interesting going on haha - just a single IP address on each router and the SSH login info. For the automation all I'm doing is using the EVE-NG "management" cloud so I reach the topology from my host PC and using the "Windows Subsystem For Linux" to get a Ubuntu terminal on my Windows 10 machine. The Linux Server you see in the topology is just a graphic in effect to make it easier for beginners to conceptualise what's going on, rather than see everything being controlled "from a cloud" haha. So the actual scripts etc wouldn't be saved as part of the EVE zip! But like I say, it's no problem to upload it if you'd still like to use it! Thanks again! :) -John

Thanks, Gerardo! Very kind of you :) -John

Thanks, Henrique!! Really appreciate hearing your feedback! -John

Thanks, Sefraoui! Really appreciate it :) -John

Hey, Avinash. You don't need to explictly state the config file - although I almost always do. Nornir should automatically look in this current directory for "hosts.yaml" etc. I suspect that your hosts file etc is named "hosts.yml" - ie yml, not yaml. It didn't find it. I'd need to lab that just to be sure but that's my suspicion :) -John

Hey, GuRpReEt! Good thinking, that's exactly what I'm doing. I'm gradually copying over each videos configs and giving it its own repo! I've started doing this since submitting my material to Cisco Code Exchange to make things cleaner! For example: github.com/IPvZero/Archiving_Telemetry So we're definitely thinking the same thing haha! Thanks for the feedback, let's me know it's a good move! -John

Hey, SoulJah. Sorry to hear you're having issues. I just tried installing it on a new VM there and it worked okay. What I did was install pip3, and then pip3 installed Nornir: 1) sudo apt install python3-pip 2) pip3 install nornir Hopefully that helps! -John

@@IPvZero I did this but hit an error on the first line at import. I'll try again in a couple hours but with the stock set up and lab. from nornir import InitNornir File "/usr/local/lib/python3.5/dist-packages/nornir/__init__.py", line 3, in from nornir.init_nornir import InitNornir File "/usr/local/lib/python3.5/dist-packages/nornir/init_nornir.py", line 22 return f"{cls.__module__}.{cls.__name__}"

@@SoulJah876 Ah I see you've got an older version of Python3. Python3.5 does not support f strings, so it'll crash. You'll need to update to Python version 3.6.2 or above :)

Hey, Pavel. This is an older video which uses Nornir2. Now the current version is Nornir3. The imports are all different. I cover the changes you have to make in this video here: kzfaq.info/get/bejne/m5OpoaqW08ycoJ8.html Hope that helps :) -John

@@IPvZero Thank you for your message.Yes that was the problem. Now works like a charm :)

Hey, Dinesh! KZfaq only gave me an alert for this today. Sorry about the delay! Yeah, if you watch my video here - you can see how to push commands from a textfile: kzfaq.info/get/bejne/qKtmp5p-kpncf30.html& With regard to prompting username and password, you instruct the script to ask you for the username and store is as a variable, and then pass that variable into to nornir's inventory. For example: username = input("Please enter your username: ") nr = InitNornir() nr.inventory.defaults.username = username Alternatively you could use Sysargv to pass this value into the script. The same can be done for passwords by importing getpass. An example being: password = getpass.getpass() nr = InitNornir() nr.inventory.defaults.password = password Hope that helps! :) -John

@@IPvZero thanks john but let's say I want push some config or get some show output for 500 devices then I can simply the host file and it's hard to write host file right ? Is it possible to copy past 500 device to text file and call it to script if yes please give me idea how can do it and also to enter enable password ?

@@DineshKumar-uw3yn Hey, Dinesh I'm still a little unsure of what you're looking to do. Are you asking - can you, for example, use Nornir to gather the running configs for each devices and save the output to a seperate text file. And then you could call upon those textfiles as configurations in another script?

With respect to the enable password, you can specify enable password in your inventory, something like: R1: connection_options: netmiko: extras: secret: secretpassword Then when execute commands use the enable method like so: results = nr.run(task=netmiko_send_command, command_string="show run", enable=True)

@@IPvZero thanks for reply john ! I'm already using netmiko with multithread/multiprocess for configuration push and get some show output and Im just checking is there any best way to use nornir+netmiko but I'm feeling this method is very complicated compare to only netmiko...let's say example I want to push config for 1000 devices what I will doI create text file and past 1000 devices but in nornir I'm feeling adding 1000 devices only it will take some time ... and another thing Let's say we have different vendors. Cisco- 200 devices ,Aruba-200 devices , juniper - 100 devices ,. cisco_nxos-100 devies and I want to push different config to different vendor can we do it using with nornir+netmiko and end it should print any failed devices and pushed config should save in different files

Hey Michael. This video was recording using Nornir2. It has since been updated. Basically the import paths and the config.yaml has changed. Check out my video on Nornir3 on how to make the changes! kzfaq.info/get/bejne/m5OpoaqW08ycoJ8.html If you have any problems after that, just lemme know :) -John

Hey, Too Late! Thanks for watching! The benefit in Nornir is really that it simplifies things. It handles all the concurrent execution for you, plus there's get the benefit of in-built features like F Object for filtering, and the Ansible-like inheritance model with the inventory. That said, this is just an introduction to Nornir. Currently I'm using Nornir with a tool called Scrapli to run the concurrent connections over SSH2 and it is much faster than what I demonstrate here :) -John

Keep calm?

@@IPvZero Because you talk too fast. And for people who are not native English speaker it's not fun!

@@mc-wi8wp Apologies, but that's how people from Scotland speak.