A simple Python client to interact with ArgoCD.
[Read More]WSL2 & Keychain
The problem
If you use ssh-agent with an encrypted ssh key it does not persist when you open a new terminal window.
The solution
Use keychain instead.
- Install
sudo apt install keychain - Add to your shells rc file, eg.
.bashrcor.zshrc# Repeat this line for all keys you want to unlock and use this way /usr/bin/keychain -q --nogui $HOME/.ssh/id_rsa source $HOME/.keychain/wsl-sh - Unlock your keys on shell startup and enjoy
Self-hosted notifications
Running any kind of personal infrastructure sometimes requires your attention based on certain events or failure states, no matter how much you automate tasks.
Over the years I have used E-Mail, Telegram bots and a variety of other tools for this purpose. However all of them have the drawback that they mix with other kinds of information and are not easilly usable in scripts.
[Read More]Git: Add only changed files
Sometimes you may want to commit only the files you have changed and not any newly created files,
this can easily be achieved by this command: git commit -a
Post Mortems
Learning from incidents
Incidents happen, and we can and should always learn from them, to be better prepared for the next time things go wrong.
A great tool to do that is the post-mortem, it is a process designed to recap the incident, learn from mistakes and improve the system as a result.
Basic principles There are some basic principles that can help achieve a good post-mortem process. They are only guidelines and I recommend adapting them to what works best in your organization.
[Read More]
GitLab: User owned projects report
Export a CSV formatted report of projects in user-namespace on a GitLab instance.
This is especially useful if you think about limiting or disabling this feature.
[Read More]Monoliths & Microservices
An opinionated overview
Ever since diving into the software development world I was troubled by a duality:
On the one hand I have built and operated many services described as monolithic with relative ease, on the other hand I’m always told I, and others, should build microservices because they are better in a variety of ways.
With this post I’m going to compare both software architectures by looking at the key benefits often associated with microservices and additional considerations I think are important.
[Read More]
Simple git changelog
A simple changelog system on top of git commit messages.
The main idea is to generate “release notes” from a diff in commits before a release. It can easily be run manually or as part of a merge/pull CI pipeline.
In this case it looks for commit messages starting with one of these [ADD], [REMOVE], [INFO] and just outputs those, but those patters can be adjusted to fit any existing commit schema.
[Read More]
The WSL Onion
Calling powershell.exe from PowerShell inside WSL
The other day I was playing around in WSL with a colleague of mine and we did this:
[Read More]Windows Subsystem For Linux 2: Debian+Podman
The problem: Docker itself can’t be run in WSL2 as it requires the docker daemon, usually run though systemd.
The solution: Podman works just fine and can easily be installed, although we will need to configure some things to make it work properly.
[Read More]Going Part Time
(Re)starting my indie journey
Starting on the first of March 2022 I no longer work full-time in my day job.
That sentence has been about a year in the making and makes me both happy and a bit scared about the future.
I have been doing some side-hustle and projects since I’ve been 16 building websites with my dad, so you could say it has been a long time coming.
Right now I have set myself three mid-term goals to build up something that brings me joy and financial independence.
[Read More]
Simple HTTP Status Monitor Using Curl
yamllint: Ignore exisiting errors
When adding yamllint to an existing project it can be hard to fix all the errors at once.
I wrote a simple script to create a rules block that simply ignores all rules that currently trigger for a file. This works by generating a rules block ignoring paths.
[Read More]Local User Management Polyfill
Older Versions of Windows 10 and all Windows Server 2012 systems have no local user management commandlets.
This is a working polyfill to allow scripts using local user management to run on old systems.
Local S3 with MinIO in Django
In production I would consider it best practice to use a S3 solution for serving assets. Namely static files and user-generated media.
This describes my setup on how to do this locally too.
The main benefit for me is that there is less of a difference between environments and I can test S3 specific features in my app.
Setup I will assume a already working Django project and MacOS with [[brew]] installed, but brew specific parts are easilly replicated on different systems using their native package managers.
[Read More]
Hidden WSL Fileshare
WSL file systems get exposed as a hidden share network share:
\\wsl$\<WSL Name>\<path\to\file>
For example, my Debian home folder is at: \\wsl$\Debian\home\kamner
Windows Terminal: Open New WSL Tab In Linux Home Folder
The path you are in when opening a new WSL tab is determined by startingDirectory. This parameter needs to be a valid Windows path, which isn’t great if we want to end up in /home/kamner inside WSL.
The nice thing about WSL is that it will resolve windows paths into their equivalent WSL/linux path if possible.
For example, C:\Scripts would resolve to /mnt/c/Scripts.
Using this and the neat trick that the WSL filesystem is exposed as a a hidden fileshare (technology/windows/wsl-hidden-fileshare) we can get to where we want.
[Read More]
Resolve .local Through Nameserver With Netplan
When using netplan it is easy to force .local DNS requests to go to you nameservers instead of being only resolved locally (the default and standard).
This also works with all other strange .WHATEVER domains you may have lying around in your organization.
Snippet from netplan configuration:
nameservers:
addresses:
- X
- Y
search:
- local
- myotherstupiddomain
MongoDB Logrotate
MongoDB does not rotate it’s log on it’s own.
To get it to ratet we will use logrotate.
First, we need to configure some things in mongod.conf to get the desired behaviour when we utilize logrotate.
systemLog: destination: file path: /var/log/mongodb/mongod.log logAppend: true logRotate: reopen Afterwards, we can create a logroatet configuration going in /etc/logrotate.d/mongodb.
/var/log/mongodb/mongod.log { rotate 5 # Keep the last 5 rotated logs, so 6 files including the currently active size 10M # Rotate once the log reaches 10MB in size, depending on your envrionment you could instead use daily, weekly, monthly, etc missingok # It's ok if the log file does not exist create 0600 mongodb mongodb # Permissions and ownership for the roatetd logs delaycompress # Don't compress on first rotation, so we have the current log and log.
[Read More]
Show all active user cron jobs on a system
Debian/Ubuntu
grep -vH "#" /var/spool/cron/crontabs/*
RedHat/Centos/Rocky
grep -vH "#" /var/spool/cron/*