A computing system for providing policy-based operating system services in an operating system, the computing system comprising at least one compute node, the compute node comprising an operating system, the operating system further comprising a kernel and a plurality of operating system services of a service type, the computing system further comprising computer processors and computer memory operatively coupled to the computer processors, the computer memory also having disposed within it computer program instructions capable of:
- establishing, on the compute node, a kernel policy specifying one of the operating system services of the service type for use in the operating system in dependence upon the hardware and software environment managed by the operating system;
- and
- retrieving the specified operating system service from the kernel policy in dependence upon the specified service type;
- determining, by the kernel, whether the kernel is able to access the specified operating system service;
- and
- accessing, by the kernel, the specified operating system service if the kernel is able to access the specified operating system service;
- and
- executing, by the compute node, computer program instructions implementing a default operating system service of the service type if the kernel is unable to access the specified operating system service.