DataDog: use events in dashboards

Using events as datasource is pretty straightforward, and described here — https://docs.datadoghq.com/events/. To use it as a graph overlay (for instance, to show app deployments), you can edit your graph, Event Overlays, and add something like below:

Fixing docker does not want to update images

If you run docker pull, and you see an error like failed to register layer: Error processing tar file(exit status 2): fatal error: runtime: out of memory, there could be 2 reasons. Obvious one — not enough disk space for docker. You can fix it with

WARNING: It will remove your unused resources like …

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How to add and increase swap on CentOS

Adding a swap file without reboot If you are having a dedicated server somewhere with not that much memory, you could decide to add a swap without rebooting your server. To do so, you need to follow the routine:

Increasing a swap size If something goes wrong with your system, and you see that …

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How to safely update data in MySQL

Mock sql (sqlx) db on golang

I am using this library — https://pkg.go.dev/github.com/data-dog/go-sqlmock. That’s how you can use it for mocking db querying:

Backup your Spotify playlists and activity

* http://www.spotmybackup.com/ Simple tool to export all your data into a file. Also you can import it into your account. So it could be used to backup your Spotify data (uses json format, only track ids, no titles). * https://www.tunemymusic.com/ It allows to transfer data between different music services and also export to a csv …

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Outline — simple and powerful vpn on your server

https://getoutline.org/ Just a couple of mouse clicks, and it will create a new droplet on DigitalOcean for you (or any other provider from the list). Very easy to install, and works good so far.

Fast and simple mock server app by swagger file

I’ve tried Mockoon for mocking by swagger/OpenAPI spec file, and it works pretty good. It autogenerates the response based on swagger format, and you are able to update any response field the way you want, save your changes and run the mock server with one click on the port you specify. It is a separate …

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How to install multiple versions of go on mac m1

For instance, I want to try a new beta, go1.18beta2 (I check if it’s available on the download page). And I already have a regular go1.17, that I want to use as a default one. To do so, I need to do this:

Then I can check if it’s okay — go1.18beta2 version #go …

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Create SQS queues on localstack container start

Put this file to your filesystem as ←anyname.sh→:

For instance, ./localstack_bootstrap/sqs_bootstrap.sh. Don’t forget to run chmod +x ./localstack_bootstrap/sqs_bootstrap.sh. Add this line to your docker-compose.yml: — ./localstack_bootstrap:/docker-entrypoint-initaws.d/. So it could look like this:

Then your queues can be reached by URLs http://localhost:4566/000000000000/queue1 and http://localhost:4566/000000000000/queue2. Further reading: https://docs.aws.amazon.com/cli/latest/reference/sqs/create-queue.html https://joerg-pfruender.github.io/software/docker/microservices/testing/2020/01/25/Localstack_in_Docker.html