Creating the Kubernetes manifest and Ignition config files
Because you must modify some cluster definition files and manually start the cluster machines, you must generate the Kubernetes manifest and Ignition config files that the cluster needs to configure the machines.
The installation configuration file transforms into the Kubernetes manifests. The manifests wrap into the Ignition configuration files, which are later used to configure the cluster machines.
Important: The Ignition config files that the OpenShift Container Platform installation
program generates contain certificates that expire after 24 hours, which are then renewed at that
time. If the cluster is shut down before renewing the certificates and the cluster is later
restarted after the 24 hours have elapsed, the cluster automatically recovers the expired
certificates. The exception is that you must manually approve the pending
node-bootstrapper
certificate signing requests (CSRs) to recover kubelet
certificates. See Recovering from expired control plane certificates
for more information.Note: The installation program that generates the manifest and Ignition files is architecture
specific and can be obtained from the client image mirror. The Linux version of the installation program runs on
s390x only. This installer program is also available as a Mac OS version.