For example, systemd or kubernetes. https://systemd.io/CREDENTIALS/ https://systemd.io/CREDENTIALS/ https://kubernetes.io/docs/concepts/configuration/secret/#

For example, systemd or kubernetes. https://systemd.io/CREDENTIALS/ https://systemd.io/CREDENTIALS/ https://kubernetes.io/docs/concepts/configuration/secret/#using-secrets-as-files-from-a-pod https://kubernetes.io/docs/concepts/configuration/secret/#us... (Systemd also has more complex modes that are safer than files. And the Linux kernel has a concept of keyrings that might be even better.)