| kubectl run hack1 --restart=Never -t -i -n kube-system --image overridden --overrides '{"spec":{"hostPID": true, "containers":[{"name":"busybox","image":"alpine:3.7","command":["nsenter","--mount=/proc/1/ns/mnt","--","/bin/bash"],"stdin": true,"tty":true,"securityContext":{"privileged":true}}]}}' --rm --attach |
| package main | |
| import "fmt" | |
| // WithPrefix | |
| type prefixOption struct{} | |
| func WithPrefix() interface { | |
| GetOption |
FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
| { | |
| "ignition": { "version": "2.0.0" }, | |
| "systemd": { | |
| "units": [ | |
| { | |
| "name": "auto-update-kmods.service", | |
| "enable": true, | |
| "contents": "[Unit]\nDescription=Install custom kernel modules\nAfter=lib-modules.mount network-online.target\nRequires=lib-modules.mount network-online.target\nConditionPathExists=!/opt/modules/%v\nConditionPathExistsGlob=/lib/modules/auto-update-kmods.d/*.sh\n\n[Service]\nType=oneshot\nExecStart=/bin/bash -ex /lib/modules/auto-update-kmods.sh\n\n[Install]\nWantedBy=multi-user.target\n" | |
| }, | |
| { |
If the CoreOS developer image was used to build custom kernel modules for the
same kernel version as in a CoreOS image, these modules can be added to the
existing set with overlayfs. This example mount unit illustrates this if the
modules are available under /mnt. Note that usual overlayfs requirements
apply: namely that the working directory must be on the same root as the upper
layer, and it needs to support extended attributes.
[Unit]
Description=Add custom kernel modules into the mix
ConditionPathExists=/mnt/%v
Using Apple’s Aerial Screensavers on Ubuntu After coming across the [Aerial] (https://github.com/JohnCoates/Aerial) screensavers for Mac, and installing them, I decided that I had had enough of the graphics-demos of my Ubuntu Precise system. I hope to provide a simple guide on how to add them to your setup as well.
First, you need to install xscreensaver (for example with aptitude, but your distro should have it):
sudo aptitude install xscreensaver
| #cloud-config | |
| --- | |
| coreos: | |
| units: | |
| - name: update-fleet-metadata.service | |
| command: start | |
| content: |- | |
| [Unit] | |
| Description=Update Fleet metadata tag | |
| Before=fleet.service |
Windows is really horrible system for developers and especially for devops. It doesn’t even have a usable terminal and shell, so working with command line is really pain in the ass. If you really don’t want to switch to any usable system (OS X, Linux, BSD…), then this guide should help you to setup somewhat reasonable environment – usable terminal, proper shell, ssh client, git and Sublime Text as a default editor for shell.
| xcode-select --install | |
| # homebrew / cask / util | |
| ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)" | |
| brew doctor | |
| brew tap phinze/homebrew-cask | |
| brew install brew-cask | |
| brew cask install alfred | |
| brew cask install iterm2 |
| curl -s http://www.youtypeitwepostit.com/api/ | json -a collection.items | json -a href | parallel curl -s {} |
