Old smartphones can be repurposed as computing clusters, utilizing their computing power to run self-hosted services. To achieve this, a phone with an unlockable bootloader is required to install postmarketOS, a Linux distribution that enables SSH access and the use of Kubernetes. This practice can be more cost-effective and provide robust alternatives compared to using devices like Raspberry Pi. The guide explores detailed steps for setting up such clusters, making use of old or partially damaged phones.
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