Assigning a bootstrap VM an IP address on the baremetal network without a DHCP server

This procedure enables adding an IP address from the baremetal network to the bootstrap VM. Execute this procedure after the step of Creating the OpenShift Container Platform manifests.

Procedure

Step 1 - Generate the ignition configuration files, replacing <directory> with the installation directory path:

$ openshift-baremetal-install --dir <directory> create ignition-configs

Step 2 - Create environment variables with the desired network bootstrap configuration:

• Replace <interface_name> with the name of the NIC (example: ens3).
• Replace <ip_address>/<CIDR> with the IP address and CIDR of the IP address for the boorstrap NIC (example: 10.0.0.2/32).
• Replace <gateway_IP_address> with the IP address of the gateway on the baremetal network (example: 10.0.0.254).
• Replace <dns_IP_address> with the IP address of the DNS server on the baremetal network (example: 10.0.0.1).

export BOOTSTRAP_NIC_NAME=<interface_name>

export BOOTSTRAP_CONFIG="[connection]
type=ethernet
interface-name=$BOOTSTRAP_NIC_NAME
[ethernet]
[ipv4]
method=manual
addresses=<ip_address>/<CIDR>
gateway=<gateway_IP_address>
dns=<dns_IP_address>"

Step 3 - Create the bootstrap configuration ignition file with the bootstrap network configuration:

$ cat > bootstrap_network_config.ign << EOF
{
  "path": "/etc/NetworkManager/system-connections/${BOOTSTRAP_NIC_NAME}.nmconnection",
  "mode": 384,
  "contents": {
    "source": "data:text/plain;charset=utf-8;base64,$(echo "${BOOTSTRAP_CONFIG}" | base64 -w 0)"
  }
}
EOF

Step 4 - Rename the original generated bootstrap ignition file:

$ mv <directory>/bootstrap.ign <directory>/bootstrap.ign.orig

Step 5 - Merge the bootstrap_network_config.ign file with the bootstrap.ign file:

$ jq '.storage.files += $input' <directory>/bootstrap.ign.orig --slurpfile input bootstrap_network_config.ign > <directory>/bootstrap.ign

Step 6 - Continue with the creation of the cluster:

$ openshift-baremetal-install --dir <directory> create cluster