Networking Guides for Linux Sysadmins | Hacker News Reader

Networking Guides for Linux Sysadmins

redhat.com

106 pointstcarriga17 comments

It's a shame the Amazon/Microsoft marketing machine is slowly killing the art of system administration. Though I guess I probably sound like a greybeard complaining about kids today and their fancy libraries and compilers.

It is nice to be able to throw up a nice interactive data viz app in a day on Reddit that can handle millions of POST requests with minimal effort.

When it works, it's great. When you have to 'prove' a problem isn't yours, and you send tcpdump files to the developer and partner company's networking team showing how the remote firewall is rejecting the packets, and neither of the recipients knows how a packet syn-ack sequence should work, or what this Wireshark tool is, it's sad.

That knowledge is becoming increasingly low level though as we build further abstractions over it. If you're working on a network you probably aught to know how TCP works, or at least know how to use Wireshark and a reference. If you're trying to spin up a simple webapp on AWS, you can pretty much stop thinking about firewalls and networking once you set up security groups/NACLs/policies/etc and confirm you can hit whatever is behind them. With new trends like immutable infrastructure coming into vogue, I'd even argue that system administration altogether is becoming a more niche skillset.

All the VPS providers are doing their part too. While Digital Ocean, etc. publish some pretty good guides on how to setup some software, step one is always "spin up a new VM on our platform". Based on discussions I see here and elsewhere, people seem to have completely forgotten how to install VirtualBox and run a local VM.

RedHat spams the crap out of /r/redhat with these, some of them are of very low quality

Indeed, which is what they're doing here: the OP only posts RedHat fabrications like that in here...

Yep, one a day for the last month, on average -- and they post the shortened links instead of the "real" URLs.

All but two have ended up [dead]

I contacted the moderators. Looks like an automated spam bot to me.

wow; if you check the post history you are right. and they all end up [dead].

maybe /u/dang will be by later if enough of us flag it, and can simply close the account.

>Becoming friends with NetworkManager

Never. The same goes for Systemd too.

Why?

https://www.youtube.com/watch?v=o_AIw9bGogo

Lists don't make for such great discussion, because they end up being about the lowest common denominator of the items on the list, which is always something generic. Generic discussions aren't as interesting because there's rarely anything new to say about them. It's better to pick the most interesting item on the list and submit that.

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

Is there any good Linux based networking book/resources which teaches you from first principles ?

Here you go: https://www.lartc.org/

Mostly linux agnostic, but in case it helps, its was all right for me. The practice exercises at the end of each section offer some hands-on help with some linux tools

https://s3.amazonaws.com/saylordotorg-resources/wwwresources...

as recommended from this course

https://learn.saylor.org/course/view.php?id=84

A listicle of networking guides. I guess this may be found useful by some, but it appears to me as buzz feed-tier tech writing with no content produced; certainly not what I'd expect from a professional outfit like red hat.

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