@jawnsy@mastodon.social
@jawnsy@mastodon.social avatar

jawnsy

@jawnsy@mastodon.social

I'm here to learn. He/him. Interested in containers, computers, and human beings. Urbanist living in San Francisco.

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anderseknert, to random
@anderseknert@hachyderm.io avatar

Having a global ~/.gitignore file (i.e. in your home directory) is a great way to allow writing notes and scratch code in any repo without having it accidentally committed.

Just a simple entry like โ€œscratch.*โ€ will allow you to write scratch.md files for notes, scratch.go for code, scratch.rego for policy, and so on. Super useful!

jawnsy,
@jawnsy@mastodon.social avatar

@anderseknert wow this is an awesome idea!

azonenberg, to random
@azonenberg@ioc.exchange avatar

@blinken was asking me about damage to ICs earlier.

Subtle stuff like bad memory bit cells is rarely if ever visible optically, especially on modern technology.

But blown IO cells from ESD/EOS are often quite obvious due to the extreme amounts of energy involved compared to what the device was intended to survive.

Here's a 100x view of an ATMega3216 that had been subjected to ~12V on the UART RX pin due to a ground fault. (I think @quantumdude836 might have been the one who sent me this chip years ago??)

You can clearly see the power and ground lines in the protection diode are completely fused and the surrounding glass dielectric is cracked.

jawnsy,
@jawnsy@mastodon.social avatar

@azonenberg Wait, is this what companies do with the crap that I send back for warranty repair?

stuartmarks, to random
@stuartmarks@mastodon.social avatar

Seen on the road the other day: a red (of course) Ferrari, with a personalized license plate as follows:

U+1F3C1

(Yes, California allows a "plus" sign in personalized plates.)

What's this mean? You Unicode nerds will have caught on already, but for the rest of us -- I had to look it up -- this refers to the following code point:

U+1F3C1 CHEQUERED FLAG

which represents this emoji: ๐Ÿ

Well played, Red Ferrari.

jawnsy,
@jawnsy@mastodon.social avatar

@stuartmarks The nerdy license plates are one of the nicest things about life in the Bay Area lol

lcamtuf, to random

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    jawnsy,
    @jawnsy@mastodon.social avatar

    @lcamtuf Does this mean that unpatched Jenkins servers are invincible? https://youtu.be/aI0euMFAWF8

    SirTapTap, to random
    @SirTapTap@mastodon.social avatar

    I don't know who needs to hear this, but nobody wants your smart home app. They want to use the Google, Amazon, or Apple ones, or an Open Source one.

    People want smart home products, but they do not want more smart home apps

    jawnsy,
    @jawnsy@mastodon.social avatar

    @SirTapTap What are the best smart home devices & apps you've used?

    eric_capuano, to random

    Didn't realize how much I teach with my hands.

    The gestures are hilarious with no audio ๐Ÿ˜‚

    video/mp4

    jawnsy,
    @jawnsy@mastodon.social avatar

    @eric_capuano @shortstack Judging by those guns, they look like lethal weapons, Eric! ๐Ÿ’ช

    jawnsy,
    @jawnsy@mastodon.social avatar

    @eric_capuano @shortstack I'm also curious to hear about some of the animated nerd fights between you two lol

    eric_capuano, to random

    In a country where school shootings are an unfortunate realityโ€ฆ

    Donโ€™t send your kid to an elementary school trunk-or-treat wearing dadโ€™s SF tactical gear including ballistic body armor, black mask, combat helmet, and NVGs.

    WTAF? Thanks for leaving the M4A1 in the car, I guess.

    jawnsy,
    @jawnsy@mastodon.social avatar

    @eric_capuano yikes, what's going on?

    stuartmarks, to rant
    @stuartmarks@mastodon.social avatar

    I was reminded again today that "Single Sign On" means that you need to sign on EVERY SINGLE TIME.

    jawnsy,
    @jawnsy@mastodon.social avatar

    @stuartmarks It's not so bad if your IdP supports passkeys. Without token binding, I think only short expiries make sense to counteract leaks caused by malware or other threats

    jawnsy,
    @jawnsy@mastodon.social avatar

    @stuartmarks Oh, that doesn't sound like modern single sign on (with OAuth2), more the variant using LDAP binding or whatever?

    shortridge, to random
    @shortridge@hachyderm.io avatar

    my frequent co-conspirator @rpetrich is dropping some knowledge bombs about system call sandboxing at

    the tl;dr of the problem with the status quo with syscall sandboxing is:

    1. it's really difficult to figure out exactly what syscalls a program needs
    2. it's especially difficult to achieve this at scale, making it non-viable in many prod environments

    but we need something to isolate unwanted program behavior given how densely we're packing workloads these days, so what do we do?

    jawnsy,
    @jawnsy@mastodon.social avatar

    @shortridge @rpetrich Years ago, @Antitree made something that could do this: https://www.antitree.com/2017/09/tool-syscall2seccomp/

    Sysdig's commercial Secure platform also supports profiling syscalls, but doesn't yet have an easy way to tell whether all necessary syscalls are in RuntimeDefault, nor to export the list.

    There's also security-profiles-operator which looks like it can help with this stuff in Kubernetes clusters. Still lots of sharp edges though unfortunately

    luis_in_brief, to random
    @luis_in_brief@social.coop avatar

    Virtually all open source project sustainability analysis is the drunk looking for their keys where the street lamp is. I feel like I need to come to every conference with a box full of printed copies of @courtneyelta, @davidthewid, et al.

    jawnsy,
    @jawnsy@mastodon.social avatar

    @davidthewid @luis_in_brief @courtneyelta What are y'all referring to, what should I be reading? Can you share a link?

    ErrataRob, to random

    I've been putzing around with this textbook for several years now, explaining why the OSI Model is obsolete. It's not accurate practice, it's not theory, it's not even helpful, but people don't understand it well enough to understand what's wrong with it. In over 200 pages, I explain why it needs to be completely abandonned, except as a historical footnote.

    https://docs.google.com/document/d/1iL0fYmMmariFoSvLd9U5nPVH1uFKC7bvVasUcYq78So/edit?usp=sharing

    jawnsy,
    @jawnsy@mastodon.social avatar

    @ErrataRob @suldrew Astronaut 1: Wait, the OSI model is bullshit?

    Astronaut 2 (holding gun): Always has been

    jawnsy,
    @jawnsy@mastodon.social avatar

    @lproven @anthropy @ErrataRob @suldrew I think it refers to this https://en.m.wikipedia.org/wiki/Clos_network

    The clouds use these internally, here's a paper that Google wrote about theirs https://research.google/pubs/pub43837/

    jawnsy,
    @jawnsy@mastodon.social avatar

    @lproven @anthropy @ErrataRob @suldrew Google has an article about their SDN, where they describe it thus:

    "We arrange our network around a Clos topology, a network configuration where a collection of smaller (cheaper) switches are arranged to provide the properties of a much larger logical switch."

    From https://cloudplatform.googleblog.com/2015/06/A-Look-Inside-Googles-Data-Center-Networks.html

    There's another description in this blog but I think it's more confusing: https://cloud.google.com/blog/topics/systems/the-evolution-of-googles-jupiter-data-center-network

    anderseknert, to github
    @anderseknert@hachyderm.io avatar

    My pastime currently: using to lint pretty much any I find on . For each project I find, I fork it, fix the problems reported, and submit a PR. Also adding Regal to their GitHub actions pipeline. Found a few bugs in Regal this way too. Iโ€™m happy, they are happy. Everybody wins ๐Ÿ˜Š

    jawnsy,
    @jawnsy@mastodon.social avatar

    @anderseknert That sounds amazing! Thank you for doing this

    paigerduty, to random
    @paigerduty@hachyderm.io avatar

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    jawnsy,
    @jawnsy@mastodon.social avatar

    @paigerduty lol metrics and observability are those things that make me think about that "me reaping" vs "me sowing" meme. It's so fun to collect tons of observability, but then you get the bill, and whelp... ๐Ÿ™ƒ

    This thread looks really amazing! Bookmarking for later ๐Ÿ”–

    stuartmarks, to random
    @stuartmarks@mastodon.social avatar

    Watching somebody write their reply on Slack or other interactive chat is the second-least productive activity ever.

    jawnsy,
    @jawnsy@mastodon.social avatar

    @stuartmarks What's the least productive?

    wolff, to random

    @bagder factorio uses !

    jawnsy,
    @jawnsy@mastodon.social avatar

    @wolff I think it's customary for you to ask @bagder to help you play Factorio

    bagder, to random
    @bagder@mastodon.social avatar

    All 6,998 subscribers of my YouTube channel shall remain aware that I will not go for earning money on those videos by torturing you with ads.

    https://www.youtube.com/user/danielhaxxse/

    jawnsy,
    @jawnsy@mastodon.social avatar

    @bagder If you keep maintaining curl, I'll gladly listen to your pitches for BetterHelp or HelloFresh or whatever

    epixoip, to random

    #covid #antigen test

    Can anyone explain what I'm seeing here? Two control lines? Positive test with misplaced test line?

    jawnsy,
    @jawnsy@mastodon.social avatar

    @epixoip That's great news! Sorry you had that scare, must've sucked to go through that

    Viss, to random
    @Viss@mastodon.social avatar

    tonights discussion surrounded ".. so where in america can you find moose? like out in the wild?"

    and it turns out, there are moose maps.

    jawnsy,
    @jawnsy@mastodon.social avatar

    @Viss Do they update based on tagged mooses (meese? what's the plural form)

    paigerduty, to random
    @paigerduty@hachyderm.io avatar

    deleted_by_author

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    jawnsy,
    @jawnsy@mastodon.social avatar

    @paigerduty me, being unfamiliar with things: S mode = S tier?

    jawnsy,
    @jawnsy@mastodon.social avatar

    @paigerduty lmaoooo wow, uh

    mattgodbolt, to random
    @mattgodbolt@hachyderm.io avatar

    You know you're old when...you get riled up at receiving emails and DMs from 20-somethings who use 'u' and 'ur' in otherwise well-spelled, technical messages. Whyyyyyy!?!

    jawnsy,
    @jawnsy@mastodon.social avatar

    @mattgodbolt "u kno ur old wen" ๐Ÿ˜œ

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