Red Hat Summit5장. Machine phases and lifecycle
Machines move through a lifecycle that has several defined phases. Understanding the machine lifecycle and its phases can help you verify whether a procedure is complete or troubleshoot undesired behavior. In OpenShift Container Platform, the machine lifecycle is consistent across all supported cloud providers.
5.1. Machine phases
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Understanding machine lifecycle phases can help you troubleshoot machine issues. As a machine moves through its lifecycle, it passes through different phases. Each phase is a basic representation of the state of the machine.
Provisioning- There is a request to provision a new machine. The machine does not yet exist and does not have an instance, a provider ID, or an address.
Provisioned-
The machine exists and has a provider ID or an address. The cloud provider has created an instance for the machine. The machine has not yet become a node and the
status.nodeRefsection of the machine object is not yet populated. Running-
The machine exists and has a provider ID or address. Ignition has run successfully and the cluster machine approver has approved a certificate signing request (CSR). The machine has become a node and the
status.nodeRefsection of the machine object contains node details. Deleting-
There is a request to delete the machine. The machine object has a
DeletionTimestampfield that indicates the time of the deletion request. Failed- There is an unrecoverable problem with the machine. This can happen, for example, if the cloud provider deletes the instance for the machine.
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