Summary
In this chapter, we learned about CoreOS clusters and how members join a cluster using cluster discovery. We got ourselves familiar with the init system used to start the units in most of the Linux systems and how CoreOS extends it to a multi-member cluster using the fleet service. We learned about starting and stopping a service on a member using fleet.
In the next chapter, we will understand more about the constraints on the service, which helps fleet select the member suitable for it to run.
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