Feature Overview (aka. Goal Summary)  

The sar command from sysstat has been widely requested including by partners and Red Hat Support. It has been demonstrated that in some cases logging to Prometheus isn't sufficient or in particularly degraded nodes, it isn't happening at all. In this case, local performance tracking via sysstat can be helpful in diagnosing problems.

Adding it as an extension will make things simpler for Red Hat support when they want to suggest investigating with sar.

Goals (aka. expected user outcomes)

Provide sysstat through the CoreOS Extensions mechanism

Documentation Considerations

This would be documented in the existing extensions section.