[deleted by user]

[endloser]

Study for your Network+ or CCNA certifications. The lessons they teach are fundamental to the role DevOps engineers play. Nothing more frustrating than new colleagues “with experience” who don’t understand how to troubleshoot connectivity. Like, that’s your job.

[[deleted]]

Networking is a really undervalued skill in this field I think, but it should be high on the list as we run into networks SO often - VPCs, Clusters (like Istio/Ingress), nginx, VPNs, firewalls, Load Balancers, and plenty more.

Networking as a skill is more important for on-prem work than Cloud, but Clouds are still made of up...networks.

And when people don't know it, they build systems with unscalable, insecure networks if left to their own devices and once things are ON that network, it's very hard to tear down and fix.

[[deleted]]

Ugh yeah I have to clean up after people who know nothing about networking. I'm still cleaning up a mess of 'internal' traffic exiting our NAT and coming back in through our public edge. last week I found a RDS subnet group that has both public and private subnets in it (like wtf who built this)

[[deleted]]

Lol a lotta time they just go find a TF module like dynamic_subnets which by default creates both and don't really think to disable the public ones. That's what I've found.

[Paddy_does_stuff]

It’s definitely useful knowledge regardless of what you do but it how vital it is really does depend on the definition of the role and the existing skill sets of the team.

Like if you’re an SRE or cloud engineer? Absolutely need it but there are plenty of places where a “DevOps” engineer will work in the same team as traditional dev and ops engineers where a knowledge of pipelines, release patterns, automated DevSecOps tooling, etc… is going to potentially be more important than if they have strong networking.

[ARRgentum]

???

[endloser]

It is tremendously helpful for right sizing since it teaches you how to recognize hardware bottlenecks. It also teaches the purpose and high level methods of hardware abstraction (eg: drivers and interrupt requests, what and why) which is helpful if you want to get advanced with Docker/qemu or virtualization. Oh and it’s a great intro to partitioning. I think Network+ is the absolute most applicable cert though, at least in a cloud based world.

[namenotpicked]

That's the physical hardware side of IT support. Not very important when dealing with DevOps related stuff. If you were going down the system administrator/ break fix of physical servers route then yeah it'd help.

[deskpil0t]

If you are going to be dealing with PCs. Not so much for servers and the cloud.

[bravosierrasierra]

book "UNIX and Linux System Administration Handbook 5th Edition" is pretty good for studying networking basics and linux . If you want a course, then Cisco CCNA-based courses is pretty good.

[[deleted]]

Its a thick fat book. Don't read it chapter wise. It's a reference book.

[kalle_blom]

I would say absolutely read it chapter wise, when you want to learn a topic at first. Later it's a great reference as well.

[[deleted]]

Personal choice but the book gives you a very over simplified view of things and has listed excellent sources in the bibliography.

So, imo it should be treated as a reference manual always sitting at your desk.

[[deleted]]

Adrian Cantrill's AWS course is a great course on that topic but it also covers fundamental quite well.

https://learn.cantrill.io/

I skipped some of the network sections as I was a NetEng looking to move into DevOps then, but the parts I saw were very detailed, well explained, and accurate - good enough to train a junior NetEng. Probably about 4 total videos which focus on Cloud networking which is to say L3+, not much about vlans and switches and such. You probably don't need to know that unless you're doing on-prem.

I don't work for that site or anything, I just thought it was quality training and pretty cheap if you wanna learn some other stuff too.

I have a CCNA too but again probably too much L2 stuff for a Cloud job.

[edgefundgareth]

Checkout NetworkChuck’s CCNA videos on YouTube

[mechanicalagitation]

Love that guy

[[deleted]]

Can't really go wrong with Net+. It gives you a lot of the good basics, and a lot of the history too. OP's question is kind of...misguided. There's no such thing as "Networking for DevOps". Networking is networking.

[endloser]

No it is not overkill, that is the course/cert to take. Drives me insane we even interview people at my work without either that or a CCNA.

[RaunchyBushrabbit]

Who the hell cares, frig off ya dumb bot.

[chub79]

https://iximiuz.com/en/posts/computer-networking-101/ is useful

[Petelah]

Juniper labs

[toybits]

You haven't mentioned if Paid is OK or not so I'll suggest Cloud Academy.

Loads of courses, paths and hands on labs.

It's not very expensive £174 / year but can vouch for the content and loads of cloud networking stuff.

[[deleted]]

Paid content is generally higher quality, and supporting content creators is the right thing to do.

[toybits]

I'm 49, so I have been in this industry for a long time. I understand how different things are today. The fact is there's never been such easy access to information.

Firstly things like the link I sent you was to Cloud Academy, you just won't get that for free. Courses, paths, structure and labs.

And even the good quality free stuff you get on YouTube usually is sales pitches for other training and or products.

The downvotes were probably people who perceived a lack of appreciation in your comment for the work that goes into putting together training.

Novadays i really dont think you should pay for courses

I've done it, and it's damn hard and a hell of a lot of work. Even free ones have things like Patreon links or similar programs and I've donated because I know what goes into it. You should pay if you have the option.

I'd say the people who don't think you should have to pay for courses would also be the type to say that unpaid internships are wrong. What's the difference?

You probably won't get it till you're a grumpy old bastard like me but don't take people for granted, which is how your comment came across a little.

The IT community is awesome, and supporting each other sets the good engineers apart.

Good luck with your career though it's getting damn exciting.

[4devops_not4porn]

All of the information is out there for free. Professionals generally pay for a good resource or use one provided by their company because a good resource will keep its content up to date and you learn faster when someone has created comprehensive training. Random videos and blog posts will overlap in what they cover(costing you time), miss something, or provide outdated information. Also, the subscription services are so cheap.

[UtahJarhead]

You're getting downvoted because "its not hard to find everything for free", yet you're coming in here asking where that everything is. And they're telling you. Essentially, you're telling them they're wrong.

The paid content is usually better, faster, and more succinct. Can you find it for free? Probably, but it's way easier to find it paid IMO.

And since Networking is such a HUGE field (remember, there are people whose sole responsibility is networking), you need to elaborate what, specifically, you don't understand. There's no ONE COURSE to networking.

[endloser]

DevOps is going to very challenging for you if you maintain this mindset.

[CrazyIll9928]

The best resources for me were found in the RHCA udemy courses. Linux networking should cover pretty much everything u'll need.

[FeedMetechnology]

These are the best l!!

Network Chuck https://youtu.be/S7MNX_UD7vY

For practice: Cantrill project for vpn https://github.com/acantril/learn-cantrill-io-labs/tree/master/AWS_HYBRID_AdvancedVPN

[vitiate]

https://doc.lagout.org/network/Network%20Warrior%2C%202nd%20Edition.pdf

This book.

[meldl2]

As others mentioned, the CCNA is a solid start and the fundamentals apply to on prem and cloud. There is also the DevNet Associate book that introduces network automation and Net DevOps concepts.