Installing a cluster¶

You can install a cluster after setting up the environment for an OpenShift Container Platform installation. Ensure you have completed the prerequisites before installing a cluster.

Cleaning up previous installations¶

You must remove the artifacts from any failed deployment attempt before trying to deploy OpenShift Container Platform again.

Procedure

Power off all bare-metal nodes before installing the OpenShift Container Platform cluster by running the following command:
```
$ ipmitool -I lanplus -U <user> -P <password> -H <management_server_ip> power off
```

Remove all old bootstrap resources if any remain from an earlier deployment attempt by running the following script:

for i in $(sudo virsh list | tail -n +3 | grep bootstrap | awk {'print $2'});
do
  sudo virsh destroy $i;
  sudo virsh undefine $i;
  sudo virsh vol-delete $i --pool $i;
  sudo virsh vol-delete $i.ign --pool $i;
  sudo virsh pool-destroy $i;
  sudo virsh pool-undefine $i;
done

Delete the artifacts that the earlier installation generated by running the following command:

$ cd ; /bin/rm -rf auth/ bootstrap.ign master.ign worker.ign metadata.json \
.openshift_install.log .openshift_install_state.json

Re-create the OpenShift Container Platform manifests by running the following command:
```
$ ./openshift-baremetal-install --dir ~/clusterconfigs create manifests
```

Deploying the cluster via the OpenShift Container Platform installer¶

You can deploy the cluster by running the OpenShift Container Platform installer.

Procedure

Run the OpenShift Container Platform installer:

$ ./openshift-baremetal-install --dir ~/clusterconfigs --log-level debug create cluster

Following the progress of the installation¶

During the deployment process, you can check the installation’s overall status by issuing the tail command to the .openshift_install.log log file in the install directory folder.

Procedure

Track installation progress by running the following command:
```
$ tail -f /path/to/install-dir/.openshift_install.log
```

Verifying static IP address configuration¶

Ensure that all required steps are complete and verify the network configuration is working properly.

If the DHCP reservation for a cluster node specifies an infinite lease, after the installer successfully provisions the node, the dispatcher script checks the node’s network configuration.

If the script determines that the network configuration contains an infinite DHCP lease, it creates a new connection by using the IP address of the DHCP lease as a static IP address.

Note

The dispatcher script might run on successfully provisioned nodes while the provisioning of other nodes in the cluster is ongoing.

Procedure

Check the network interface configuration on the node.
Turn off the DHCP server and reboot the OpenShift Container Platform node and ensure that the network configuration works properly.

Additional resources

Understanding update channels and releases