high availability – Jupiter Broadcasting

Keeping Systems Simple | TechSNAP 403

Wes Payne — Fri, 10 May 2019 21:00:15 +0000

Show Notes: techsnap.systems/403

The post Keeping Systems Simple | TechSNAP 403 first appeared on Jupiter Broadcasting.

8,000,000 Mogofoo-ops | BSD Now 65

chris — Thu, 27 Nov 2014 11:33:00 +0000

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Coming up on the show this week, we’ve got an interview with Brendan Gregg of Netflix. He’s got a lot to say about performance tuning and benchmarks & even some pretty funny stories about how people have done them incorrectly. As always, this week’s news & answers to your emails, on BSD Now – the place to B.. SD.

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Headlines

Even more BSD presentation videos

More videos from this year’s MeetBSD and OpenZFS devsummit were uploaded since last week
Robert Ryan, At the Heart of the Digital Economy
FreeNAS & ZFS, The Indestructible Duo – Except for the Hard Drives
Richard Yao, libzfs_core and ioctl stabilization
OpenZFS, Company lightning talks
OpenZFS, Hackathon Presentation and Awards
Pavel Zakharov, Fast File Cloning
Rick Reed, Half a billion unsuspecting FreeBSD users
Alex Reece & Matt Ahrens, Device Removal
Chris Side, Channel Programs
David Maxwell, The Unix command pipeline
Be sure to check out the giant list of videos from last week’s episode if you haven’t seen them already

NetBSD on a Cobalt Qube 2

The Cobalt Qube was a very expensive networking appliance around 2000
In 2014, you can apparently get one of these MIPS-based machines for about forty bucks
This blog post details getting NetBSD installed and set up on the rare relic of our networking past
If you’re an old-time fan of RISC or MIPS CPUs, this’ll be a treat for you
Lots of great pictures of the hardware too

OpenBSD vs. AFL

In their never-ending security audit, some OpenBSD developers have been hitting various parts of the tree with a fuzzer
If you’re not familiar, fuzzing is a semi-automated way to test programs for crashes and potential security problems
The program being subjected to torture gets all sorts of random and invalid input, in the hopes of uncovering overflows and other bugs
American Fuzzy Lop, in particular, has provided some interesting results across various open source projects recently
So far, it’s fixed some NULL pointer dereferences in OpenSSH, various crashes in tcpdump and mandoc and a few other things
AFL has an impressive list of CVEs (vulnerabilities) that it’s helped developers discover and fix
It also made its way into OpenBSD ports, FreeBSD ports and NetBSD’s pkgsrc very recently, so you can try it out for yourself

GNOME 3 hits the FreeBSD ports tree

While you’ve been able to run GNOME 3 on PC-BSD and OpenBSD for a while, it hasn’t actually hit the FreeBSD ports tree.. until now
Due to systemd dependencies and the upstream developers not really being interested in non-Linux OSes, it took a considerable amount of effort to port
Now you can play with GNOME 3 and all its goodies (as well as Cinnamon 2.2, which this also brings in) on vanilla FreeBSD
Be sure to check the commit message and /usr/ports/UPDATING if you’re upgrading from GNOME 2
You might also want to go back and listen to our interview with Joe Marcus Clark about GNOME’s portability

Interview – Brendan Gregg – bgregg@netflix.com / @brendangregg

Performance tuning, benchmarks, debugging

News Roundup

DragonFlyBSD 4.0 released

A new major version of DragonFly, 4.0.1, was just recently announced
This version includes support for Haswell GPUs, lots of SMP improvements (including some in PF) and support for up to 256 CPUs
It’s also the first release to drop support for i386, so it joins PCBSD in the 64 bit-only club
Check the release notes for all the details, including networking and kernel improvements, as well as some crypto changes

Can we talk about FreeBSD vs Linux

Hackernews had a recent thread about discussing Linux vs BSD, and the trolls stayed away for once
Rather than rehashing why one is “better” than the other, it was focused on explaining some of the differences between ecosystems and communities
If you’re one of the many people who watch our show just out of curiosity about the BSD world, this might be a good thread to read
Someone in the comments even gave bsdnow.tv a mention as a good resource to learn, thanks guy

OpenBSD IPSEC tunnel guide

If you’ve ever wanted to connect two networks with OpenBSD gateways, this is the article for you
It shows how to set up an IPSEC tunnel between destinations, how to lock it down and how to access all the machines on the other network just like they were on your LAN
The article also explains some of the basics of IPSEC if you’re not familiar with all the terminology, so this isn’t just for experts
Though the article itself is a few years old, it mostly still applies to the latest stuff today
All the tools used are in the OpenBSD base system, so that’s pretty handy too

DragonFly starts work on IPFW2

DragonFlyBSD, much like FreeBSD, comes with more than one firewall you can use
Now it looks like you’re going to have yet another choice, as someone is working on a fork of IPFW (which is actually already in its second version, so it should be “IPFW3”)
Not a whole lot is known yet; it’s still in heavy development, but there’s a brief roadmap page with some planned additions
The guy who’s working on this has already agreed to come on the show for an interview, but we’re going to give him a chance to get some more work done first
Expect that sometime next year, once he’s made some progress

Feedback/Questions

All the tutorials are posted in their entirety at bsdnow.tv
Michael Lucas’ new book, “FreeBSD Mastery: Storage Essentials” is on sale now, check it out if you want to learn about FreeBSD’s disk subsystems
Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv – don’t be shy, we’d love to hear what you have to say
Watch live Wednesdays at 2:00PM Eastern (19:00 UTC)
We’ve got a fun idea for the holidays this year: just like we ask during the interviews, we want to hear how all the viewers and listeners first got into BSD. Email us your story, either written or a video version, and we’ll read and play some of them for the Christmas episode. You’ve got until December 17th to send them in (that’s when we’re prerecording)

The post 8,000,000 Mogofoo-ops | BSD Now 65 first appeared on Jupiter Broadcasting.

ZFS War Stories | BSD Now 45

chris — Thu, 10 Jul 2014 12:39:46 +0000

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This week Allan is at BSDCam in the UK, so we’ll be back with a regular episode next week. For now though, here’s an interview with Josh Paetzel about some crazy experiences he’s had with ZFS.

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Interview – Josh Paetzel – josh@ixsystems.com / @bsdunix4ever

Crazy ZFS stories, network protocols, server hardware

All the tutorials are posted in their entirety at bsdnow.tv
Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv
If you want to come on for an interview or have a tutorial you’d like to see, let us know
Watch live Wednesdays at 2:00PM Eastern (18:00 UTC)

The post ZFS War Stories | BSD Now 45 first appeared on Jupiter Broadcasting.

AirPorts & Packages | BSD Now 40

chris — Thu, 05 Jun 2014 13:12:25 +0000

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On this week\’s episode, we\’ll be giving you an introductory guide on OpenBSD\’s ports and package system.

There\’s also a pretty fly interview with Karl Lehenbauer, about how they use FreeBSD at FlightAware.

Lots of interesting news and answers to all your emails, on BSD Now – the place to B.. SD.

Thanks to:

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Headlines

BSDCan 2014 talks and reports, part 2

More presentations and trip reports are still being uploaded
Ingo Schwarze, New Trends in mandoc
Vsevolod Stakhov, The Architecture of the New Solver in pkg
Julio Merino, The FreeBSD Test Suite
Zbigniew Bodek, Transparent Superpages for FreeBSD on ARM
There\’s also a trip report from Michael Dexter and another (very long and detailed) trip report from our friend Warren Block that even gives us some linkage, thanks!

Beyond security, getting to know OpenBSD\’s real purpose

Michael W Lucas (who, we learn through this video, has been using BSD since 1986) gave a \”webcast\” last week, and the audio and slides are finally up
It clocks in at just over 30 minutes, managing to touch on a lot of OpenBSD topics
Some of those topics include: what is OpenBSD and why you should care, the philosophy of the project, how it serves as a \”pressure cooker for ideas,\” briefly touches on GPL vs BSDL, their \”do it right or don\’t do it at all\” attitude, their stance on NDAs and blobs, recent LibreSSL development, some of the security functions that OpenBSD enabled before anyone else (and the ripple effect that had) and, of course, their disturbing preference for comic sans
Here\’s a direct link to the slides
Great presentation if you\’d like to learn a bit about OpenBSD, but also contains a bit of information that long-time users might not know too

FreeBSD vs Linux, a comprehensive comparison

Another blog post covering something people seem to be obsessed with – FreeBSD vs Linux
This one was worth mentioning because it\’s very thorough in regards to how things are done behind the scenes, not just the usual technical differences
It highlights the concept of a \”core team\” and their role vs \”contributors\” and \”committers\” (similar to a presentation Kirk McKusick did not long ago)
While a lot of things will be the same on both platforms, you might still be asking \”which one is right for me?\” – this article weighs in with some points for both sides and different use cases
Pretty well-written and unbiased article that also mentions areas where Linux might be better, so don\’t hate us for linking it

Expand FreeNAS with plugins

One of the things people love the most about FreeNAS (other than ZFS) is their cool plugin framework
With these plugins, you can greatly expand the feature set of your NAS via third party programs
This page talks about a few of the more popular ones and how they can be used to improve your NAS or media box experience
Some examples include setting up an OwnCloud server, Bacula for backups, Maraschino for managing a home theater PC, Plex Media Server for an easy to use video experience and a few more
It then goes into more detail about each of them, how to actually install plugins and then how to set them up

Interview – Karl Lehenbauer – karl@flightaware.com / @flightaware

FreeBSD at FlightAware, BSD history, various topics

Tutorial

Ports and packages in OpenBSD

News Roundup

Code review culture meets FreeBSD

In most of the BSDs, changes need to be reviewed by more than one person before being committed to the tree
This article describes Phabricator, an open source code review system that we briefly mentioned last week
Instructions for using it are on the wiki
While not approved by the core team yet for anything official, it\’s in a testing phase and developers are encouraged to try it out and get their patches reviewed
Just look at that fancy interface!!

Michael Lucas\’ next tech books

Sneaky MWL somehow finds his way into both our headlines and the news roundup
He gives us an update on the next BSD books that he\’s planning to release
The plan is to release three (or so) books based on different aspects of FreeBSD\’s storage system(s) – GEOM, UFS, ZFS, etc.
This has the advantage of only requiring you to buy the one(s) you\’re specifically interested in
\”When will they be released? When I\’m done writing them. How much will they cost? Dunno.\”
It\’s not Absolute FreeBSD 3rd edition…

CARP failover and high availability on FreeBSD

If you\’re running a cluster or a group of servers, you should have some sort of failover in place
But the question comes up, \”how do you load balance the load balancers!?\”
This video goes through the process of giving more than one machine the same IP, how to set up CARP, securing it and demonstrates a node dying
Also mentions DNS-based load balancing as another option

PCBSD weekly digest

This time in PCBSD land, we\’re getting ready for the 10.0.2 release (ISOs here)
AppCafe got a good number of fixes, and now shows 10 random highlighted applications
EasyPBI added a \”bulk\” mode to create PBIs of an entire FreeBSD port category
Lumina, the new desktop environment, is still being worked on and got some bug fixes too

Feedback/Questions

All the tutorials are posted in their entirety at bsdnow.tv
Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv
If you want to come on for an interview or have a tutorial you\’d like to see, let us know
Just a reminder, if you\’re using vnd (vnconfig) on OpenBSD for encryption, it\’s being retired for 5.7 – start planning to migrate your data to softraid
There were also some security advisories for FreeBSD recently, make sure you\’re all patched up
Watch live Wednesdays at 2:00PM Eastern (18:00 UTC)

The post AirPorts & Packages | BSD Now 40 first appeared on Jupiter Broadcasting.