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@max-rocket-internet
max-rocket-internet / prom-k8s-request-limits.md
Last active March 30, 2025 02:08
How to display Kubernetes request and limit in Grafana / Prometheus properly

CPU: percentage of limit

A lot of people land when trying to find out how to calculate CPU usage metric correctly in prometheus, myself included! So I'll post what I eventually ended up using as I think it's still a little difficult trying to tie together all the snippets of info here and elsewhere.

This is specific to k8s and containers that have CPU limits set.

To show CPU usage as a percentage of the limit given to the container, this is the Prometheus query we used to create nice graphs in Grafana:

sum(rate(container_cpu_usage_seconds_total{name!~".*prometheus.*", image!="", container_name!="POD"}[5m])) by (pod_name, container_name) /
@Eyjafjallajokull
Eyjafjallajokull / README.md
Last active February 28, 2025 18:52
AWS EBS - Find unused snapshots

This script can help you find and remove unused AWS snapshots and volumes.

There is hardcoded list of regions that it searches, adjust the value to suit your needs.

Use snapshot.py snapshot-report to generate report.csv containing information about all snapshots.

snapshot.py snapshot-cleanup lets you interactively delete snapshot if it finds it is referencing unexisting resources.

./snapshots.py --help
@georgiana-gligor
georgiana-gligor / osx-pdf-from-markdown.markdown
Last active February 19, 2025 22:26
Markdown source for the "Create PDF files from Markdown sources in OSX" article

Create PDF files from Markdown sources in OSX

When [Markdown][markdown] appeared more than 10 years ago, it aimed to make it easier to express ideas in an easy-to-write plain text format. It offers a simple syntax that takes the writer focus away from the formatting, thus giving her time to focus on the actual content.

The market abunds of editors to be used for help with markdown. After a few attempts, I settled to Sublime and its browser preview plugin, which work great for me and have a small memory footprint to accomplish that. To pass the results around to other people, less technical, a markdown file and a bunch of images is not the best approach, so converting it to a more robust format like PDF seems like a much better choice.

[Pandoc][pandoc] is the swiss-army knife of converting documents between various formats. While being able to deal with heavy-weight formats like docx and epub, we will need it for the more lightweight markdown. To be able to generate PDF files, we need LaTeX. On OSX, the s

bind-key C-b send-prefix
bind-key C-o rotate-window
bind-key C-z suspend-client
bind-key Space next-layout
bind-key ! break-pane
bind-key " split-window
bind-key # list-buffers
bind-key $ command-prompt -I #S "rename-session '%%'"
bind-key % split-window -h
bind-key & confirm-before -p "kill-window #W? (y/n)" kill-window
@audreyfeldroy
audreyfeldroy / pypi-release-checklist.md
Last active March 27, 2025 19:16
My PyPI Release Checklist
  • Update HISTORY.md
  • Commit the changes:
git add HISTORY.md
git commit -m "Changelog for upcoming release 0.1.1."
  • Update version number (can also be minor or major)
bumpversion patch
@rdmarsh
rdmarsh / pi-tips.md
Last active June 10, 2024 10:48
Clean up the Raspbian default build for the Raspberry Pi

Remove unused packages on Raspberry Pi

(this is worth looking at http://www.stefan-seelmann.de/wiki/rasperrypi-homeserver, which is basically this:

apt-get purge --auto-remove scratch debian-reference-en dillo idle3 python3-tk idle python-pygame python-tk lightdm gnome-themes-standard gnome-icon-theme raspberrypi-artwork gvfs-backends gvfs-fuse desktop-base lxpolkit netsurf-gtk zenity xdg-utils mupdf gtk2-engines alsa-utils  lxde lxtask menu-xdg gksu midori xserver-xorg xinit xserver-xorg-video-fbdev libraspberrypi-dev libraspberrypi-doc dbus-x11 libx11-6 libx11-data libx11-xcb1 x11-common x11-utils lxde-icon-theme gconf-service gconf2-common

)

Warning: this will probably break something. If you need sound, don't remove the "alsa" packages

sudo apt-get --yes purge xserver-common x11-xfs-utils x11-xserver-utils xinit libsmbclient blt gvfs gvfs-backends gvfs-daemons gvfs-fuse idle idle-python2.7 idle-python3.2 idle3 libaudio2 libice6 liblightdm-gobject-1-0 libobrender27 libpulse0 libqt4-svg libqt

@hrldcpr
hrldcpr / tree.md
Last active January 6, 2025 22:43
one-line tree in python

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

@jed
jed / LICENSE.txt
Created May 20, 2011 13:27 — forked from 140bytes/LICENSE.txt
generate random UUIDs
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 Jed Schmidt <http://jed.is>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
@garethr
garethr / build.xml
Created March 20, 2011 15:07
Sample ant build file for running rsync and scp base flat file deployment
<project name="{{ name }}" default="help" basedir=".">
<property name="username" value="{{ username }}"/>
<property name="host" value="{{ host }}"/>
<property name="dir" value="/srv/{{ path }}/"/>
<tstamp>
<format property="TODAY_UK" pattern="yyyyMMddhhmmss" locale="en,UK"/>
</tstamp>
@shinzui
shinzui / tmux.conf
Created March 12, 2011 01:08 — forked from bryanl/tmux.conf
tmux.conf
# ~/.tmux.conf
#
# See the following files:
#
# /opt/local/share/doc/tmux/t-williams.conf
# /opt/local/share/doc/tmux/screen-keys.conf
# /opt/local/share/doc/tmux/vim-keys.conf
#
# URLs to read:
#