The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Infrastructure’ Category

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Scott Hanselman on Witter: “Why should I care about Kubernetes, Docker, and Container Orchestration?”

Posted by jpluimers on 2018/02/08

An important question for many people, so if you want to know more or get started: [WayBack] Scott Hanselman on Twitter: “Why should I care about Kubernetes, Docker, and Container Orchestration?” followed by:

Yes, AKS is Azure Container Services (go figure!).

Notes

  • For burning, Scott recommends [WayBack] Etcher: Burn images to SD cards & USB drives, safely and easily (which is now also available as experimental [WayBack] Etcher CLI), I tended to use a script like below since I’m a command-line person, but since Etcher does write and verify in one run, I’m considering switching:
    1. find where the SD card is mounted on your Mac: diskutil list
    2. sudo su -
    3. execute this from the directory where you downloaded filling in targetDevice with the value from diskutil list

    targetDevice="disk9"
    imageName="2017-11-29-raspbian-stretch-lite"
    unzip -o ${imageName}.zip
    diskutil umount "/dev/${targetDevice}s1"; \
    dd bs=1m of="/dev/r${targetDevice}" if=${imageName}; \
    sync; \
    diskutil list; \
    diskutil eject "/dev/${targetDevice}"

–jeroen

Posted in Cloud, Containers, Docker, Infrastructure, Kubernetes (k8n), Power User | Leave a Comment »

Happy “check your backups day”; does your restore process work? And how is the rest of your admin process doing?

Posted by jpluimers on 2018/02/01

Today is [WayBack] Check your backups Day! started by @CyberShambles in dedication of the @Gitlab outage on 20170201.

Please check your restoration process now. As people screw up and accidents happen (I know first hand from a client).

Why isn’t this date on January 31st? Long short story: the failure started that date, but restoration took most of 20170201. So February 1st it is.

Others will follow and GitLab wasn’t alone, as a few days before soup.io had to restore a 2015 database backup.

It all comes back to

Nobody wants backup.

Everybody wants restore.

which made it to the 2008 [WayBack] adminzen.org – The Admin Zen and has been attributed to various people including [WayBack] to Kristian Köhntopp and [WayBack] to Martin Seeger who told Kristian Köhntopp that it was coined by Sun’s Michael Nagorsnik at one of the early [WayBack] NuBIT. Martin was there; he knows (:

The oldest mention of the phrase I could find was in 2006 by Volker Bir at [WayBack] Spy Sheriff – so how do people get infected w/ this thing?.

Keeping clients in the loop

Since soup.io hosts their updates blog on their own platform, the restore resulted in the post prior to [Archive.is] Update after crash ;) – Soup Updates sort of ironically being the mid-2015 [WayBack] Give us your money! – Soup Updates. Usually dogfooding is a good thing though.

During such a downtime, it is crucial to stay in touch through alternative channels. Soup.io didn’t do a good job on their twitter account: they only announced the “update after crash”, not being down, why or progress.

They also deny the WayBack machine access to updates.soup.io because of [WayBack] robots.txt because how they redirect through /remotes, but luckily Archive.is doesn’t care about that and has less old updates.soup.io archived as recent as end of 2015.

GitLab did a much better job on their GitLabStatus account.

Postmortems and organisation culture.

Everybody can screw up, and usually a severe outage happens even when everybody tries to do the right thing. The only way to learn from it is to have [WayBack] Blameless PostMortems and a Just Culture – Code as Craft.

Read the rest of this entry »

Posted in DevOps, Power User | Leave a Comment »

What happens when a huge number of people share a single grocery store loyalty card? – The Old New Thing

Posted by jpluimers on 2018/01/12

[WayBack] What happens when a huge number of people share a single grocery store loyalty card? – The Old New Thing

An interesting discussion in the comments besides this interesting article observation:

What messes up their data analysis is when two people with different lifestyles swap cards. The system sees that somebody who used to buy yogurt and bulk brewer’s yeast is now buying potato chips and frozen pizzas, and it can’t figure out what is going on.

–jeroen

Posted in Cloud, Development, Fun, Infrastructure, LifeHacker, Software Development, The Old New Thing, Windows Development | Leave a Comment »

jessie frazelle on Twitter: “Hire the people who will automate themselves out of a job, then just keep giving them jobs.”

Posted by jpluimers on 2017/12/31

This is what DevOps is all about: [WayBack] jessie frazelle on Twitter: “Hire the people who will automate themselves out of a job, then just keep giving them jobs.”

I had seen the tweet before, but forgot to save it. Jonas Bandi reminded me of it at [WayBack] Weekend Reader: End of Year Edition – reality-loop.

Jessie is doing great work. For instance, she developed and published contained.af, and nobody captured the flag yet: [WayBack] jessie frazelle on Twitter: «A year ago I made contained.af and it’s launched over 128,000 containers & no one has retrieved the flag».

The game runs in a container, gives you console access and has a bunch of questions. Still need to dig deeper in it, as it is a fascinating set-up. If you like to try it:

Wishing you a year where nobody captures your flags (:

–jeroen

via [WayBack] I just published my “Weekend Reader: End of Year Edition” – Jonas Bandi – Google+

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Posted in Agile, Cloud, Containers, Development, DevOps, Docker, Infrastructure, Kubernetes (k8n), LifeHacker, Power User, Software Development | Leave a Comment »

Time to Grow Up: Counterproductive Security Behaviors That Must End // Speaker Deck

Posted by jpluimers on 2017/12/29

Good end-of-year re-reading (hopefully there is a video link by now) by Chris Eng (@chriseng) [WayBack] Time to Grow Up: Counterproductive Security Behaviors That Must End // Speaker Deck

via: [WayBack] Thats a decent keynote – G+ Kristian Köhntopp.

Read the rest of this entry »

Posted in Development, Infrastructure, Security, Software Development | Leave a Comment »

On the Docker-Kubernetes announcement: if Kubernetes does so much, do you still use Docker?

Posted by jpluimers on 2017/12/03

Must read: [WayBack] Some Thoughts on the Docker-Kubernetes Announcement – Scott’s Weblog – The weblog of an IT pro specializing in cloud computing, virtualization, and networking, all with an open source view

Via a thread with great comments: [WayBack] Two weeks ago, Scott Lowe mused about the Docker-Kubernetes announcement. https://blog.scottlowe.org/2017/10/17/some-thoughts-on-docker-kubernetes-anno… – Kristian Köhntopp – Google+

–jeroen

Posted in Cloud, Containers, Docker, Infrastructure, Kubernetes (k8n) | Leave a Comment »

iptables debugging « \1

Posted by jpluimers on 2017/11/28

Using the TRACE target: [WayBack] iptables debugging « \1 via [WayBack] iptables Debugging using the TRACE chain – Kristian Köhntopp – Google+

Docs:

TRACE
This target marks packes so that the kernel will log every rule which match the packets as those traverse the tables, chains,
rules. (The ipt_LOG or ip6t_LOG module is required for the logging.) The packets are logged with the string prefix: “TRACE:
tablename:chainname:type:rulenum ” where type can be “rule” for plain rule, “return” for implicit rule at the end of a user
defined chain and “policy” for the policy of the built in chains.
It can only be used in the raw table.

Way more details in the linked article.

–jeroen

Posted in *nix, *nix-tools, Firewall, Infrastructure, iptables, Power User | Leave a Comment »

Microsoft live/passport account Security settings URL

Posted by jpluimers on 2017/11/13

For my link archive:

Microsoft live/passport account Security settings are at https://account.live.com/proofs/Manage

–jeroen

Posted in Cloud, Infrastructure, Microsoft Live, Power User | Leave a Comment »

New steps for Slack on Twitter: “@thorduri 😣 You can always disable emoji conversion in Preferences > Emoji > Convert my typed emoticons to emoji. 👍”

Posted by jpluimers on 2017/09/18

After: @thorduri You can always disable emoji conversion in Preferences > Emoji > Convert my typed emoticons to emoji. [WayBack]

We live in the form-over-function era [WayBack], so of course this setting is not reachable by URL, only reachable by using these steps:

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Posted in Cloud, Cloud Apps, Infrastructure, Internet, Power User, SocialMedia | Leave a Comment »

Posted by jpluimers on 2017/06/30

It’s such an all time classic from 2006 that people even kept scans of the original 2006 Computer World publication by [WayBack] John Klossner.

Over the last few years, it has done its round over the internet a few times, so I did some digging for the scans, colour and mono originals.

Data security versus Human Error.

In this corner, we have firewalls, encryption, antivirus software, etc. And in this corner, we have Dave!!

[WayBack] John Klossner Cartoons: Computer World has the original black and white version: it’s even a gif!

Way better than the scan from paper: [WayBack] ShackF00 » Weekend Round-up: Google Issues and a Sad-but-True Comic

In 2014, Spiceworks re-ran the black and white one: [WayBack] And in THIS corner we have Dave! (Funny cartoon) – IT Security – Spiceworks

In 2015, Wombat Security published a coloured version on social media, and even bigger too: not just large, huge as well (:

–jeroen

via: [WayBack] Dave – CodeProject – Google+

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Posted in Encryption, Firewall, Fun, Power User, Security | Leave a Comment »

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