Given there is a user with an attachable avatar: class User < ApplicationRecord has_one_attached :avatar end
Capistrano 3 has a doctor task that will print information about Environment: Ruby, Rubygems and Bundler versions List of Capistrano...
When using Rails credentials, you will edit the encrypted credentials for staging or production environments from time to time. To...
Using Capistrano, we usually have some array configurations in the config/deploy.rb file, like set :linked_files, %w[config/database.yml], so in...
Why do we migrate? Due to a change in licensing, we cannot provide Elasticsearch versions >= 8.0. Version 7.17.x will...
This Capistrano task runs a command on all servers. bundle exec cap production app:run cmd='zgrep -P "..." RAILS_ROOT/log/production.log...
A general overview about why and how we migrate can be found under Migrating from Elasticsearch to Opensearch
In Capistrano 3, your Capfile requires 'capistrano/rails/migrations', which brings two Capistrano tasks: deploy:migrate and deploy:migrating. The former checks...
We regularly have tasks that need to be performed around a deploy. Be it to notify operations about changed application...
If you have a fully functional CI pipeline but no CD, you might find yourself frequently waiting for CI (with...
Every Rails response has a default ETag header. In theory this would enable caching for multiple requests to the same...
Sidekiq 7 adds a new feature called capsules. Use cases: a chrome queue limited to 1 for e.g. PDF processing...
If you use a newer SSH key generated with the ED25519 algorithm instead of RSA (see Create a new SSH...
This is a checklist I use to work on issues. For this purpose I extracted several cards related to the...
Das Standardtool für Monitoring auf AWS ist Cloudwatch. Du hast dir in den AWS Kapiteln Cloudwatch sicherlich schon grundsätzlich angesehen...
Du verstehst, warum man Healthchecks u.ä. haben möchte. Du weißt auch, dass solche Checks nicht exklusiv für Kubernetes...
Im Kapitel 502 Eine Applikation als Container mit CI pipelines deployen hast du eine Applikation auf AWS deployed. In diesem...
Du verstehst, was ein Pod ist und warum es Sinn macht, Container auf diese Weise zu gruppieren.
In diesem Kapitel wirst du eine Applikation in ein Containerimage verpacken und dieses via CI/CD bauen. Anschließend baust du die...
Issue: You have an app using jsbundling-rails and esbuild. After deploy, the assets built by esbuild are missing in...
You'll need openssl-3 or newer for servers running 22.04 Ruby version 3.1 uses by default the gem openssl...
You want to deploy new features but the latest commits are not ready for production? Then use git merge master...
Webpack builds can take a long time, so we only want to compile when needed. This card shows what will...
In newer passenger versions the output of passenger -v has changed. capistrano-passenger tries to parse the version and now...