Cloud on Micha Kops' Tech Notes

AWS Snippets

Thu, 01 Mar 2018 00:00:00 +0100

AWS Command Line Interface

Installation

$ curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64-2.0.30.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

AWS Documentation

RDS

Export Database Configuration

Export instance configuration

aws rds describe-db-instances --db-instance-identifier arn:aws:rds:eu-central-1:123456789:db:hascode-prd-db --no-paginate

Export parameter group configuration

aws rds describe-db-parameters --db-parameter-group-name PARAM_GROUP_NAME >> param_group_conf.json

Export option group configuration

aws rds describe-option-groups --option-group-name OPT_GROUP_NAME >> option_group_conf.json

Generate Signed URLs with Linux Tools

e.g. for accessing a website behind a CloudFront distribution using a canned policy.

Write the policy file

Distributed Authorization and Contextual Caveats for Java with Macaroons and jmacaroons

Wed, 31 May 2017 00:00:00 +0200

Google’s Macaroons are a mechanism to establish distributed authorization. The distinction to the classical bearer-token is their ability that they may be used to perform an action under certain restrictions and may then be used to create a new macaroon with stricter restrictions.

The following short tutorial demonstrates how to create macaroons, serialize and deserialize them, add first- and third-party caveats and finally to verify them.

Figure 1. jmacaroons example

Continuous Delivery with GitHub Cloud and GitHub Pipelines

Fri, 01 Jul 2016 00:00:00 +0200

Atlassian has added a continuous integration service as a new feature to their GitHub Cloud product. It’s called GitHub Pipelines and it is similar to Travis CI for GitHub offering a nice integration for continuous integration/delivery pipelines for projects hosted on GitHub.

It’s still in the beta phase and requires a sign-up but nevertheless I’d like to demonstrate the current state of this service and how easy it is to add scripted pipelines to a project.