Run an ARM32 Docker daemon on ARM64 servers

In the last days I worked on a suitable setup for a Drone CI server to support multi-arch builds. While the setup for common x86 Drone runners is easy, working with setups for ARM, especially ARM32, is a bit tricky. The easiest way would be to have native servers of the respective architecture available. However, it’s difficult to find hosting offers for ARM at all - for ARM32 this seems almost impossible. I decided to use Amazon EC2 ARM64 servers, they are relatively cheap and can also be used as a private customer.

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Ansible and the relations to the inventory

I love Ansible and I’m pretty happy to have this configuration management solution. But some little “features” drive me crazy sometimes. My task for today was to switch from a static Ansible inventory file to multiple dynamic inventory script. In general this, should be really straight forward. Create an inventory folder and add some small Python scripts to create Ansible readable inventories from different providers.

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