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debugging

A collection of 22 posts

How to write a systemd unit service file

How to write a systemd unit service file

Remind me how to write a systemd serive and the required steps/Unit file. Say you want to run rqlite (any program you want to run as a service) as a systemd service. Step one - always check if the maintainer(s) of your program already ship / document a systemd

git list previous branch

git list previous branch

In git, how do I go back to the previous branch I was just on? I've got a memory of a fish and easily forget which branch I was on previously- how do I switch back? Also, is it true fish have short memories and what if they're drunk? An

Deleting files "Cannot be removed because it is not empty" Error (Solved)

Deleting files "Cannot be removed because it is not empty" Error (Solved)

Struggling to delete a persistent file? We were facing the same problem! In our case, we encountered this issue while working with WSL (Windows Subsystem for Linux) and Python and we wanted to delete a folder. If you're here just for the solution, here's what you can do: Step 1:

A practical, detailed guide to Git branching strategy, issue creation and merging

A practical, detailed guide to Git branching strategy, issue creation and merging

Question: I would like to ask for an explanation about git best practices. Like git branching, naming branches etc Sidenote- why does all this matter & why should I care about issues, git and branching? Have you ever.. * Not had enough information about an issue/bug? * Struggled to find a link

Setup an IPv6 connection over IPv4 via Wireguard VPN (How to get IPv6 when you only have an IPv4 internet connection)

Setup an IPv6 connection over IPv4 via Wireguard VPN (How to get IPv6 when you only have an IPv4 internet connection)

If you don't have IPv6 at home, sometimes you want to be able to test IPv6 only services- you need to tunnel a IPv6 connection somehow from your IPv4 internet connection to a server which does have IPv6 enabled. You can achieve that by using a combination of: * A cheap

Make Playwright faster: experimenting with containers and build caching on Github actions

Make Playwright faster: experimenting with containers and build caching on Github actions

GitHub - KarmaComputing/playwright-testingContribute to KarmaComputing/playwright-testing development by creating an account on GitHub.GitHubKarmaComputing Background: We started using Playwright very early on, and had ended up with a test suite which was taking too long to run, and especially long on our pipelines (sounds familiar?). In the interest of

[remote rejected] (refusing to allow an OAuth App to create or update workflow `.github/workflows/...` without `workflow` scope)

[remote rejected] (refusing to allow an OAuth App to create or update workflow `.github/workflows/...` without `workflow` scope)

Github OAuth apps now require the 'workflow' scope when performing operations such as pushing a new workflow to a repo. Github has started/added a new more fine-grained permissions for oauth. Previously only the scope repo was needed to read/write access to a repo given permission- however now github

How to write a secure container

How to write a secure container

So, how do you write a secure container? Rule 1: Know where your data is coming from Common things to avoid: * Pulling images from public registries * Know your dependencies Solution: Maintain your own copy of dependencies, and keep up to date when new patches are released to adress security issues

Playwright tutorial example configuration

Playwright tutorial example configuration

Playwright provides a fast and reliable interface that can be used to automate browser navigation testing. In this Playwirght tutorial, we are going to use it to do some simple automated test and errors you might experience in the process. See the following Github repository: GitHub - KarmaComputing/playwright-testingContribute to

Debug python containers pdb docker breakpoint

Debug python containers pdb docker breakpoint

Debugging python docker containers with remote-pdb, docker-compose You want to debug and set breakpoints inside your docker container and/or you want to debug with docker-compose. > Warning: As the docs say: The debug host in your Docker container must be set to 0.0.0.0 (localhost or 127.0.

Does git rm delete the file?

Does git rm delete the file?

tldr; Yes. Yes it does. (use git restore --staged to un-delete if you made that mistake*) Does git rm remove the file? How to find out yourself: See man git rm or read on. Sometimes you find git is tracking files (e.g. binary files like images) which you shouldn't

Override the entrypoint of docker containers (any container)

Override the entrypoint of docker containers (any container)

Sometimes you want a quick and easy way to look inside a container before it's stopped- to debug it, to see what's going on. One way to change a way the image's container starts: docker run --rm --env-file .env --entrypoint="/bin/sleep" 120 #Example docker run --rm --env-file .env --entrypoint=

Sessions not set SameSite cookie Firefox vs Chome iframe

Sessions not set SameSite cookie Firefox vs Chome iframe

This matter comes into play when you are embedding an iframe into your application (e.g. maybe your application is a SasS or you have a single sign on scenario), and you need to allow the embedded iframe to set cookies. tldr: https://twitter.com/rowan_m/status/1279013752520740865 I

Docker entrypoint vs cmd

Docker entrypoint vs cmd

I'm always forgetting what is the difference between Docker's entry point vs Docker cmd. Which one to use and when? Tldr: "You can use the exec form of ENTRYPOINT to set fairly stable default commands and arguments and then use either form of CMD to set additional defaults that are

Scaling Kubernetes ReadWriteMany Ceph Deployments

Scaling Kubernetes ReadWriteMany Ceph Deployments

Run ReadWriteMany volumes on Google Kubernetes engine which allows your Deployments with persistent data to scale. This allows us to scale a Kubernetes deployment with Persistent Volumes without the deployment getting stuck waiting for a realease on a volume. This tutotial has a repo which has been pinned as a

Getting started with Java and Scala projects using Maven, intellij

Getting started with Java and Scala projects using Maven, intellij

Coming from a Python/Php and/or systm administration bacground with no little to Java experience is daunting. * POM? What is that? (Is this like setuptools?) Not really, but sort of * Maven? What is it? * How do I even run this thing? * What's a war file? * Why can't I just

Move Site From wpengine, how to migrate site

Move Site From wpengine, how to migrate site

The steps to migrate a website away from wpengine and move to another web host. 1 Perform a full site backup & Download Using the my.wpending console, perform a fill website back and wait for the email confirmation with the link to download the full backup. 2 Remove undeeded files/

Quickest way to find active php.ini

Quickest way to find active php.ini

How to quickly find active php.ini file? You're administering a system you're not familir with (?) and need to quikly know the location of the active `php.ini` file. Simply run from command line: php -ini The above will out put the location of the active php -ini file, along

Angular httpClient POST Duplicate Parameters Array (like php form elements) []

Angular httpClient POST Duplicate Parameters Array (like php form elements) []

We were creating an Angular app which needed to post to a legacy PHP application and need to post same name / duplicate array parameters over a post request. Our Angular app needed to send the following http post data: data[] = value1 data[] = value2 Note the arguments are the same name,

Make your website load fast. Improve web render (repaint) speed

Make your website load fast. Improve web render (repaint) speed

We were challanged to improve the time to first paint (aka First Meaningful Paint) of a client's shopify theme. Study 34 has a beautiful mission for people who care about the provenance of product in the fashion industry, starting with modern, sustainable, luxury knitwear for women. However, tested on slow

Checksum and CRC How To

Checksum and CRC How To

Checkum Let's have a go! * decide and agree on a number by which we divide by (e.g. 16) * take sum of all the numbers Agree on a number to divide by: 16 Here's some numbers: 2511127134First- Take the sum of all of these numbers: 25 + 11 + 12 + 7 + 13

Debugging Laravel Policies

Debugging Laravel Policies

This is relevant to Laravel 5.4 and above (probably) Help! My laravel policy not working..." Some debugging strategies to help with this. * The default Laravel Policy directory is app/Policies/yourModelPolicy.php * You must register your policies by specifying them in the AuthServiceProvider.php file at app/Providers * Have

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