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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Some links on using and updating Let’s Encrypt certificates for internal servers

Posted by jpluimers on 2022/02/01

Sometimes it is easier to have current and public CA signed TLS certificates for internal servers than to setup and maintain an internal CA and register it on all affected browsers (including mobile phones).

One of my reasons to investigate this is that Chrome refuses to save credentials on servers that have no verifiable TLS certificate, see my post Some links on Chrome not prompting to save passwords (when Firefox and Safari do) about a week ago.

Below are some links for my link archive that hopefully will allow me to do this with Let’s Encrypt (msot via [Wayback/Archive] letsencrypt for internal servers – Google Search):

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Posted in Cloud, Cloudflare, Development, Encryption, ESXi6, ESXi6.5, ESXi6.7, ESXi7, Fritz!, Fritz!Box, Fritz!WLAN, Infrastructure, Internet, Let's Encrypt (letsencrypt/certbot), Power User, Security, Software Development, Virtualization, VMware, VMware ESXi, Web Development | Leave a Comment »

Need to revisit osquery: SQL powered operating system instrumentation, monitoring, and analytics supports more platforms and also aggregates to central log locations

Posted by jpluimers on 2022/01/18

Almost two years ago, GitHub – facebook/osquery: SQL powered operating system instrumentation, monitoring, and analytics published from the automatic blog queue.

It was in the midst of my rectum cancer treatment, so I was glad the blog queue back then was still about 18 months deep.

This meant I looked into osquery in 2018, which I remember because I needed it on MacOS as I did not want to remember the syntax for MacOS specific commands on getting system information. It also coincides with how much my repository fork was behind: [Wayback: jpluimers/osquery commits/Archive: jpluimers/osquery commits].

Fast forward to now, the breath of systems I’m involved with has widened, so I was glad to see that Kristian Köhntopp mentioned it:

So time to try it again (:

The links he mentioned:

  • [Wayback/Archive] Welcome to osquery – osquery

    osquery is an operating system instrumentation framework for Windows, OS X (macOS), Linux, and FreeBSD. The tools make low-level operating system analytics and monitoring both performant and intuitive.

  • [Wayback/Archive] Welcome to osquery – osquery: High Level Features
    The high-performance and low-footprint distributed host monitoring daemon, osqueryd, allows you to schedule queries to be executed across your entire infrastructure. The daemon takes care of aggregating the query results over time and generates logs which indicate state changes in your infrastructure. You can use this to maintain insight into the security, performance, configuration, and state of your entire infrastructure. osqueryd‘s logging can integrate into your internal log aggregation pipeline, regardless of your technology stack, via a robust plugin architecture.
    The interactive query console, osqueryi, gives you a SQL interface to try out new queries and explore your operating system. With the power of a complete SQL language and dozens of useful tables built-in, osqueryi is an invaluable tool when performing incident response, diagnosing a systems operations problem, troubleshooting a performance issue, etc.
  • [Wayback/Archive] osqueryd (daemon) – osquery
  • [Wayback/Archive] osqueryi (shell) – osquery
  • [Wayback/Archive] Aggregating Logs – osquery
  • [Wayback/Archive] AWS Logging – osquery

Main site: [Wayback/Archive] osquery | Easily ask questions about your Linux, Windows, and macOS infrastructure

Repository: [Wayback/Archive] osquery/osquery: SQL powered operating system instrumentation, monitoring, and analytics.

–jeroen

Posted in *nix, *nix-tools, Apple, Development, DevOps, Facebook, Infrastructure, Mac, Mac OS X / OS X / MacOS, Power User, SocialMedia, Software Development, Windows | Leave a Comment »

Productivity tips by Florian Haas and David Moreau-Simard: the mottos you work by

Posted by jpluimers on 2021/12/30

My own motto: learn new things every day.

Florian:

[Archive.is] Florian Haas 🇪🇺 on Twitter: “Docs or it didn’t happen.… “

David:

[Archive.is] ☁David Moreau-Simard on Twitter: “Hey software and system folks, I’m curious: what are some of the mottos you work by ? I’ll start:

Via Florian’s pinned Twitter post I found while writing media.ccc.de – No, we won’t have a video call for that! (Communications in distributed teams by Florian Haas).

–jeroen

Posted in Development, DevOps, Software Development | 1 Comment »

Jan Schaumann: “The secret language of coders, part N of many. Today: “risk acceptance”… “

Posted by jpluimers on 2021/12/08

From a while back, but more relevant than ever:

[Archive.is] Jan Schaumann on Twitter: “The secret language of coders, part N of many. Today: “risk acceptance”… “

Obligatory video below the fold.

–jeroen

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Posted in Development, DevOps, Infrastructure, LifeHacker, Power User, Security, Software Development | Leave a Comment »

Katie Anderson on Twitter: “Saw this on Facebook and it’s my new favorite PaaS (Pizza as a Service) breakdown”

Posted by jpluimers on 2021/11/30

Legacy/IaaS/PaaS/SaaS explained by “Pizza as a service”: from home made, take and bake, pizza delivery to full dining out.

[Archive.is] Katie Anderson on Twitter: “Saw this on Facebook and it’s my new favorite PaaS (Pizza as a Service) breakdown https://t.co/INKKG9UOAK” / Twitter

–jeroen

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Posted in Cloud, Conference Topics, Conferences, Development, Event, Infrastructure, Software Development, Systems Architecture | Leave a Comment »

GitHub – TimeToogo/tunshell: Remote shell into ephemeral environments 🐚 🦀

Posted by jpluimers on 2021/11/25

Cool: [Wayback/Archive.is] GitHub – TimeToogo/tunshell: Remote shell into ephemeral environments 🐚 🦀

Via: [Archive.is] Jan Schaumann on Twitter: “This looks neat: on-demand remote shell into ephemeral environments, e.g. CI/CD pipeline container. Both sides fetch a client, use rendezvous server to negotiate session info, then establish connection or fall back to proxy through rendezvous. “

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Posted in Communications Development, Development, DevOps, HTTP, Infrastructure, Internet protocol suite, Power User, Software Development, TCP, WebSockets | Leave a Comment »

@adamsand0r drew up a few sketches of design decisions needed to be taken when building a #gitops-based CD pipeline

Posted by jpluimers on 2021/11/10

Great decision diagrams: [Archive.is] Thread by @adamsand0r: good morning Twitter! I drew up a few sketches of design decisions needed to be taken when building a #gitops-based CD pipeline. let me know…

Via [Archive.is] Ian Miell on Twitter: “Oh man, these diagrams will make the hell of architecting GitOps pipelines easier to reason about… Thread 👇… “

[Archive.is] Ádám Sándor on Twitter: “good morning Twitter! I drew up a few sketches of design decisions needed to be taken when building a #gitops-based CD pipeline. let me know what do you think… #gitopsdecisions”

–jeroen

via

Posted in Development, DevOps, DVCS - Distributed Version Control, git, Source Code Management | Leave a Comment »

OpenSuSE tumbleweed switched to using /etc/sudoers.d which broke yast module sudo somewhere mid 2020

Posted by jpluimers on 2021/11/09

Mid 2020, I re-installed a Raspberry Pi 2 box based on OpenSuSE Tumbleweed.

To my susprise the yast2 module sudo could not write the configuration.

It appeared that /etc/sudoers had become readonly and a new /etc/sudoers.d was created.

You can use visudo to edit files in that directory without potentially losing changes in /etc/sudoers during upgrades. I think that is a good move.

To bad the yast module failed because of it.

More on visudo and the /etc/sudoers.d directory:

–jeroen

Posted in *nix, Development, DevOps, Infrastructure, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »

Using Google/Cloudflare/central DNS can bite you with large downloads

Posted by jpluimers on 2021/10/22

If you think download speeds are slow for large downloads (or multi-media playback is slow or quality is low) on a fast link, then consider your DNS.

Many people report that using one of the centralised DNS services (like Google/Cloudflare/…) causes slowness because they direct CDN lookups to a small pool of servers that get overloaded.

Some links:

Via [WayBack] How to check whether DNS is working through a browser? – Super User

Google DNS also allows for interactive querying, for example [WayBack] Google Public DNS

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Posted in Cloud, Cloudflare, DNS, Hardware, Infrastructure, Internet, Network-and-equipment, Power User | Leave a Comment »

Links to learn more about infrastructure.

Posted by jpluimers on 2021/10/14

For my link archive; [Archive.is] .DS_Storoz on Twitter: “Alright, I’m rage-quitting the frontend, moving into infrastructure. (Seriously.) Where is my community for this? Who do I follow? What conferences do I go to? Please and thanks and RT!”

Keywords:

  • Terraform, Docker, Kubernetes, AWS!
  • Systems Performance, Google SRE book, DDIA
  • the DORA report
  • b0rk

–jeroen

Posted in Amazon S3, Amazon SES, Amazon.com/.de/.fr/.uk/..., AWS Amazon Web Services, Cloud, Containers, Docker, Infrastructure, Kubernetes (k8n), Power User | Leave a Comment »

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