Getting started with Ansible 02 - SSH Overview & Setup

Ansible is an incredible configuration management and provisioning utility that enables you to automate all the things. In this series, you'll learn everything you need to know in order to use Ansible for your day-to-day administration duties. In the second episode, we take a look at some foundational knowledge, specifically OpenSSH which is required for Ansible to work.
Full series:
Part 1 (Introduction): linux.video/ansible1
Part 2 (This video)
Part 3 (Setting up the Git Repository): linux.video/ansible3
Part 4 (Running Commands): linux.video/ansible4
Part 5 (Running Elevated Commands): linux.video/ansible5
Part 6 (Writing our first Playbook): linux.video/ansible6
Part 7 (The "when" Conditional): linux.video/ansible7
Part 8 (Improving your Playbook): linux.video/ansible8
Part 9 (Targeting Specific Nodes): linux.video/ansible9
Part 10 (Tags): linux.video/ansible10
Part 11 (Managing Files): linux.video/ansible11
Part 12 (Managing Services): linux.video/ansible12
Part 13 (Adding Users & Bootstrapping): linux.video/ansible13
Part 14 (Roles): linux.video/ansible14
Part 15 (Host Variables): linux.video/ansible15
Part 16 (Templates): linux.video/ansible16
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📖 Check out jay's latest book, Mastering Ubuntu Server 3rd Edition. Available now!
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💽 How to create a bootable flash drive for installing Linux:
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🐧 Which distro do I use?
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🔐 How to better secure OpenSSH:
➡️ linux.video/secure-ssh
☁️ How to create a cloud Linux server with Linode:
➡️ learnlinux.link/create-linode
#Ansible #LearnAnsible #AnsibleCourse

[@BatMite19]

This is a great ssh tutorial regardless of if someone wants to use Ansible or not!

Your videos should be a template for all other teachable videos. It was clear, good pace, easy to follow and understand. And you explained things perfectly! Thank you.

[@DrazenMarjanovic]

one of the best lecturers I have listened to😁 keep on good work

[@bb-xj9ed]

thank youuuu

[@juanpaul6141]

Thank you so much your content is truly well organized, well edited the speed of your voice is 10/10, content is really spot on.

[@ebusdk]

Ohh my!! - This content is better than most paid training I have gotten so far. I signed up for your patron to give you much needed credit for your great work. Looking forward to browsing through all your content :)

[@tuberats99]

I am glad I found this channel, thank you for existing!

[@mindfulape8763]

Second video into your series and I'm already loving it. Keep making great content!

[@agroleau04]

Thanks Jay, your tutorials are always awesome and very informative.

[@majki5900]

Awesome tutorial! You know what, I watched a lot videos about ssh keys to understand this topic but this is first in which someone showed that we don't copy the whole key file but the content of key file to the file "authorized_keys" . Now I understand :)

[@dlgang]

fyi you can play this at 1.25 speed and it is understandable

[@RootsterAnon]

Legend Unlocked!

[@thewolfwitharose6677]

You might go even further. I'm watching at 1.75

[@7thAttempt]

thanksthiscommentwasactuallyhelpful:)

[@safedba]

An absolute necessity if you have ADD. I can't listen to people who talk slow.

[@daviddunkelheit9952]

Holy smokes you are so right. I just did and it was like 👍 correct speed. Never thought of that was what was irking me about Jay’s delivery.

[@johncyrus473]

This series is awesome! I truly appreciate the detailed, concise walkthrough.

[@amirp3487]

Thanks Jay, I cam here to learn ansible and all of a sudden I learned so much more the stuff that I didnt bother to learn.

[@amitg2k]

This is superb. Solved some long overdue issues for me.

[@Pinea_pples]

your video is making me as an strong Engineer in my core... thank you jay.....love from india

[@MeMe-ic6rc]

finally I got it with SSH, Thank you so much for the effort

[@joshurki5088]

Thank you so much, Jay, great video and work! very helpfull!! BTW, your english is so beautiful, no any accent, your video quality is also clear and perfect, zoom control is very good, we can see, you definittely spent lot of time and energy to make this video, thanks again!

[@Lexxal_]

Wow you are very good at teaching! Thank you

[@maxcoletti]

Thank you! This is super-high quality training!

[@davchev]

I was just planning to put the public key on the billboard :) hahaha, good explanation. I just discovered your channel and I can say that it immediately became my favorite place.

[@drewskiidub7640]

Your products are amazing! Thanks a bunch!

[@grahammccann8554]

Thank you for the over view of SSH

[@joaocometti]

I'm glad to find this video, great job.

[@AnantaAkash.Podder]

Thank you very much sir... For this quality of video for free...❤️❤️❤️

[@ujjawalsrivastva4692]

Nice explaination and qualtiy stuff, Thankyou.

[@tarokhyaghoubi6021]

That is great . Im junior Python developer . This is Zero to Hero .... Thanks So MUCH !!!

[@jamesrico]

Great channel. Love the content.

[@tungnns]

Awsome tutorials! Wish I had found your channel earlier

[@gupthabayyana3395]

that opened my eyes man, thanks a lot

[@balajirao8093]

Nice explanation!

[@user-do6gs1qg7t]

Such a amazing style, I have request please make a series of linux administration, and othe devops tools. thanks

[@garethwestwood2681]

Great video Jay

[@davidtalturejman9185]

Youre amazing! Thanks for the content!!!

[@jaysonbackes9279]

I wish I could hit the like button a hundred times!

[@earnestredwood4694]

This was good I am excited.

[@smartcool-jc2wx]

Thanks for this. This is one of the best and detailed series I have seen.

[@talibe2023]

Many Thanks Bro ! It's very help me

[@mihaiboca1930]

You are the best man! Thanks alot!

[@osada96]

Great video, thanks a lot!

[@user-sk7lc9xi6r]

Great job👍

[@stargategoku]

Thanks a lot for posting

[@jizhang75]

great tutorial, thanks

[@mksoftwaresolutions9303]

For those who can't access the Ubuntu server instances on Virtual Box via ssh. Settings > Network Adapter 1: Select Host-Only-Adapter (If you don't have any available name for Host-only Adapter, first go to File Menu > Host Network Manager and Create) Adapter 2: NAT

[@mishrasidhant]

❤‍🔥

[@AnlUreturk]

Excellent

[@mostafasharbaf4829]

thanks buddy so many good things

[@alonavarshal6200]

have to pay attention that you've changed tmux panes but it's great tutorial! thank you very much!

[@whatevah666]

Good info, but what you don´t mention is that before you can copy over the pub ssh key for the ansible user to a remote server the user has to exist there. This is less of a problem if you´re starting out with your server deployments but if you already have xxx linux servers you´ll have to craft this with some script outside of the ansible scope to get started. (well not really, you could create users and stuff with ansible as well, sure)

[@daviddunkelheit9952]

Haha great tip but I had to laugh at having “..xxx Linux servers…”. I knew what you meant but my mind went there -> hosting xxx content on Linux servers….lulz Again thanks for the tip I noticed Jay kind of glosses over that there needs to be a user on that server already

[@davita6189]

Can you guys tell me how to do that? or know any KZbin video where i can see it?

[@MrSomaaoo]

great video , appreciate if you add automation for network devices as well to the series big like

[@werfly]

Thank you

[@Dros34]

I’m confused. Does your workstation have a Linux OS installed on it? Or is it basically windows with some kind of SSH tool? Like putty mobaxterm etc? The you just use the tool to make SSH connections to everything?

[@potasio101]

WOW thanky ou for the information I done this before but I never understood what was happening underhood

[@divyanshpant169]

Thanks 👍

[@MaKaNufilms]

Just one thing: I did it also in the past and do it also with test environments, but for production systems the fingerprint mechanism should be handled with more care.

[@fuatkaradeniz]

Hello Jay. Thank you for making these videos. And I also have few questions for you. When I was trying to simulate this video in my Oracle virtual box running Ubuntu 20 LTS, I faced two problems with tmux that I couldn't solve First, when I opened four different windows like you did, they all have the same IP address. How can I assign different IP addresses to each window? Second, when I tried to rename the windows like you named them, The rename command works but when i write a new name and hit enter, it say the file or the name couldn't be found and defaults back to its original name. But on my screen it, An index word is placed before the renaming space, which you can't delete. I will greatly appreciate It you can help me with these issues. Thank you again. And have a great day in peace and in good health

[@ktachenygmail]

When you start tmux with the server prompts are you manually creating prompts and launching ssh in each one?

[@mohamedalichakroun4426]

hi good work, my question is how does the openssh choose the key when you don't specify . why did the connection work with the first key and not the ansible key when you didn't specify the key to use?

[@tomaschovanec5339]

Hello, your videos are awesome. I like your tmux setup, is possible somewhere find and download same theme? Thank you.

[@vladimirsutanovac7588]

Thank you for this incredible learning path. Please clarify whether you created all virtual machines on one PC. In my case, all machines have the same IP address.

[@win30034]

If you cloned it power off and remove network and reattach? After that configure up address as static and also change hostname

[@vbogatovbogatov683]

Hi Jay, Can we use certs for nodes and users for that purpose? to authenticate our hosts (servers) and users...

[@killbill8965]

what is yours ssh_config and sshd_config - What kind of identification rules is enabled in your config?

[@ConsolePCGaming]

Well done great video, however when copy the ssh to a remote host your command doesnt work , i get "Error Too many arguments, expecting a target hostname?"

[@emilpeychev8714]

System76 Rocks !

[@mihai6564]

thanks

[@vnetpost]

u r awesome

[@philipsheaff]

So I want to use Ansible with network switches. Does the Ansible ping command only work if python is installed on the target server/switch?

[@kaizendae]

How does ssh-copy-id put the public key into the server's autorized_keys file? how is this request authenticated?

[@andrewwalker9864]

You are my favorite KZbin Linux instructor. You are just the kind of teacher I was looking for. Quick question. Are you using the same user account to log in to you SSH sessions?

[@Sammy102093]

I'm currently going through this using WSL and using SSH to connect to a CentOS VM I have. Do I need to set up more VMs to have multiple servers to connect to? In your video you simply added 1 to the IP address to add more servers without issue I'm using a Win10 machine. I originally tried using VSCode but when I tried pinging my inventory, they all timed out due to not being able to SSH so I switched back to using a terminal instead of an IDE.

[@hussamel-maghraby2077]

you are amazing, how about making videos for installing like jenkins, nginx, tomcat without root?

[@lorddoinkus6349]

Are we supposed to download tmux and have 3 additional servers as well for this tutorial?

[@frankhaubenschild5576]

The bottom line of the video: which tool is allowing you to switch between several shells and showing you on which one you are?

[@professorvoland]

tmux

[@vollstrecker3390]

i hate, when commited ppl call themselves lazy xdddddd great videos

[@cerruz83]

when I try to copy the second key (ansible) on the first host I get this error: /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/maroci/.ssh/ansible.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys root@addreshost: Permission denied (publickey).

[@barnabasszabados1436]

I had the same problem, try with non-root user. it worked for me.

[@a.j.5475]

Which tool is he using to navigate between his vm's? Cant hear it clearly enough. Teambox,teamvox,...

[@thomasnicolazo170]

Tmux

[@zafranullah8328]

In case someone come across this issue "ssh: could not resolve hostname add: Name or service not known". Make sure to apply the changes by either restarting your terminal or sourcing the .bashrc file with the following command "source ~/.bashrc"

[@ramnivas9148]

If I want to connect with 100 servers do i need to follow these same steps? Is there any alternative?

[@MarkusEicher70]

Thanks for this question, I asked myself the same. 🤝

[@bumbee939]

is it possible to share your .bashrc ? want to makeuse of some of the awesome aliases.

[@isaacmaag1294]

You go into good detail a lot which I like. However you never once told us when you switched servers and so I ended up following along but copying stuff to the wrong servers which led to me having to restart. I bet 99% of us aren't using what you are for VMS so please make sure to make it clear when you switch between servers. It is especially hard to notice when you are using that software because all you do is click "1" to change so I am sure I am not the only one that missed that. Overall though I appreciate the series, you seem to be one of the only good series on youtube so thank you for the knowledge.

[@dharminnagar6226]

How did he create server1, server2, server3?? I'm a total newbie. Can anyone guide pls?

[@olufemiajibade]

Please how do I create or set the IP address for each servers. I'm using vagrant

[@rajaeelastname4878]

I don't have access to any Linux or UNIX machines at all to practice tge stuff in your videos. Is there an easy and preferably free way creating 3 or 4 VM in a cloud provider? This way I will be able to practice Ansible

[@MarkusEicher70]

Hi there. One easy and free way to practice would be virtualbox from Oracle, which is free. While there are so called free tiers from various cloud providers, but you need to be careful, because not everything is free and some free tiers expire pretty soon. The safest way is to use virtualbox, if your machine has enough power and supports virtualization.

[@msmithsr01]

Great video but there is one thing I'm a bit lost on. How are you able to ssh into a server just using the IP and not specifying a user?

[@sumitanand9369]

7:59 read the footnote

[@msmithsr01]

Totally missed that! Thanks

[@msmithsr01]

Totally missed that! Thanks

[@irfandyjip3246]

I'm saving this for myself, feel free to like or add. 23:22 Too lazy to write passphrase

[@claytyler-nt4rt]

"are you sure" about that fingerprint? Get it before you send (colo) it

[@3nt3_]

ssh passwords are not the standard though?

[@devsecopstoolbox]

ssh Permission denied (publickey). ssh Permission denied (publickey). Please help me

[@liambirt3758]

That's because you're probably trying to ssh into VPS - you'll need to run the following: ssh -i [e-mail] If you're not using Ubuntu then put the name of your distro before the '@' sign - unless you created a different username. Where I put 'REPLACE-WITH-YOUR-IP-ADDRESS' should be self explanatory - but just in case, you'll replace that with your VPS IP Address (or Ec2 or whatever you're ssh'ing into).

[@KUSUMAV-fc8ug]

Which password want to give there video 8:15

[@arqamsultan2022]

how can i create VM ?

[@whackywakey7411]

FYI, I used this to get the targets ssh finger-print; for i in {200..215}; do ssh-keyscan -H 192.168.101.$i >> ~/.ssh/known_hosts ; done

[@streamx2]

I feel like all his videos could be 7 minutes long, instead he repeats himself many times and It's really hard to not get bored.

[@bothorsen4292]

I disagree with the idea of using an ssh key for ansible. Instead you should have keys for each person with access - this will allow you to remove access for each person individually

[@TheOnlyEpsilonAlpha]

19:38 And that‘s the reason i don‘t use passphrases. Their implementations are wack, not just on ansible, but in general. Also the caching options are far from perfect, for example the PuTTy Agent on Windows, forgot the passphrase. That is, for me, an unacceptable error, i want my keys to be straight and the state of my system consistent. I don’t need side-processes, that work or won’t work on a daily basis. 25:02 yeah as i said, the implementations are wack, sry but’s true. I better focus more on keeping my keys secure, than counter processes which don’t work consistent

[@angryapple1882]

I am running a home server running Ubuntu Server do you have a video on how to create a ssh key?

[@mondskiez309]

It was already shown on this video.. What part was it not understandable?

[@angryapple1882]

I had add the comment before thanks

[@Dchau360]

You don't even need to create an alias and run ssha if you follow this and add it to your ~/.ssh/config docs.github.com/en/free-pro-team@latest/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent This is for Mac but might need a different option flag for linux

[@boxedowl]

Why can't I like twice!?!

[@milleniumenterprise3254]

if you get an error when trying to copy the key to the server, specify the user of the server ie: ssh-copy-id -i ~/.ssh/id_ed25519.pub patrick@192.111.111.111

[@jacobolsen9811]

first

[@ConsolePCGaming]

These damn adverts they appear within a few seconds of watching a video, really annoying, dont mind adverts you can skip but these adverts are getting worse! Then you get double adverts!

[@curmudgeoniii9762]

Would be good if you would go over some important issues before you have someone go through this sales course to then find out how much it would cost to purchase this product. This product is NOT open source or free.

[@TechnoBog-ov2mp]

I fell asleep.....

[@ewenchan1239]

You mentioned that you should manually log into each of the hosts with ssh, to accept the ECDSA key via the interactive prompt, but if you're working with hundred or thousands of servers - wouldn't that be a terrible way to do it? I am asking because this is why I am starting to learn Ansible is so that I don't have to manually log into each host permutatively with each other so that I can get passwordless ssh working between all of the host pairs. Thanks.

[@LearnLinuxTV]

You can include the ssh key in your deployment image.

[@ewenchan1239]

@@LearnLinuxTV But if you were doing pair-wise login where all of the deployments have to also cross-communicate with each other, the ECDSA key for the deployments won't be know until they are deployed. For the Ansible to client deployment, this will work. I am not sure if this will work for pairwise clientclient communications though.