Chapter 7. Expanding the cluster After deploying an installer-provisioned OpenShift Container Platform cluster, you can use the following procedures to expand the number of worker nodes. Ensure that each prospective worker node meets the prerequisites. Note Expanding the cluster using RedFish Virtual Media involves meeting minimum firmware requirements. See Firmware requirements for installing with virtual media in the Prerequisites section for additional details when expanding the cluster using RedFish Virtual Media. 7.1. Preparing the bare metal node To expand your cluster, you must provide the node with the relevant IP address. This can be done with a static configuration, or with a DHCP (Dynamic Host Configuration protocol) server. When expanding the cluster using a DHCP server, each node must have a DHCP reservation. Reserving IP addresses so they become static IP addresses Some administrators prefer to use static IP addresses so that each node's IP address remains constant in the absence of a DHCP server. To configure static IP addresses with NMState, see "Optional: Configuring host network interfaces in the install-config.yaml file" in the "Setting up the environment for an OpenShift installation" section for additional details. Preparing the bare metal node requires executing the following procedure from the provisioner node. Procedure Get the oc binary: USD curl -s https://mirror.openshift.com/pub/openshift-v4/clients/ocp/USDVERSION/openshift-client-linux-USDVERSION.tar.gz | tar zxvf - oc USD sudo cp oc /usr/local/bin Power off the bare metal node by using the baseboard management controller (BMC), and ensure it is off. Retrieve the user name and password of the bare metal node's baseboard management controller. Then, create base64 strings from the user name and password: USD echo -ne "root" | base64 USD echo -ne "password" | base64 Create a configuration file for the bare metal node. Depending on whether you are using a static configuration or a DHCP server, use one of the following example bmh.yaml files, replacing values in the YAML to match your environment: USD vim bmh.yaml Static configuration bmh.yaml : --- apiVersion: v1 1 kind: Secret metadata: name: openshift-worker-<num>-network-config-secret 2 namespace: openshift-machine-api type: Opaque stringData: nmstate: | 3 interfaces: 4 - name: <nic1_name> 5 type: ethernet state: up ipv4: address: - ip: <ip_address> 6 prefix-length: 24 enabled: true dns-resolver: config: server: - <dns_ip_address> 7 routes: config: - destination: 0.0.0.0/0 -hop-address: <next_hop_ip_address> 8 -hop-interface: <next_hop_nic1_name> 9 --- apiVersion: v1 kind: Secret metadata: name: openshift-worker-<num>-bmc-secret 10 namespace: openshift-machine-api type: Opaque data: username: <base64_of_uid> 11 password: <base64_of_pwd> 12 --- apiVersion: metal3.io/v1alpha1 kind: BareMetalHost metadata: name: openshift-worker-<num> 13 namespace: openshift-machine-api spec: online: True bootMACAddress: <nic1_mac_address> 14 bmc: address: <protocol>://<bmc_url> 15 credentialsName: openshift-worker-<num>-bmc-secret 16 disableCertificateVerification: True 17 username: <bmc_username> 18 password: <bmc_password> 19 rootDeviceHints: deviceName: <root_device_hint> 20 preprovisioningNetworkDataName: openshift-worker-<num>-network-config-secret 21 1 To configure the network interface for a newly created node, specify the name of the secret that contains the network configuration. Follow the nmstate syntax to define the network configuration for your node. See "Optional: Configuring host network interfaces in the install-config.yaml file" for details on configuring NMState syntax. 2 10 13 16 Replace <num> for the worker number of the bare metal node in the name fields, the credentialsName field, and the preprovisioningNetworkDataName field. 3 Add the NMState YAML syntax to configure the host interfaces. 4 Optional: If you have configured the network interface with nmstate , and you want to disable an interface, set state: up with the IP addresses set to enabled: false as shown: --- interfaces: - name: <nic_name> type: ethernet state: up ipv4: enabled: false ipv6: enabled: false 5 6 7 8 9 Replace <nic1_name> , <ip_address> , <dns_ip_address> , <next_hop_ip_address> and <next_hop_nic1_name> with appropriate values. 11 12 Replace <base64_of_uid> and <base64_of_pwd> with the base64 string of the user name and password. 14 Replace <nic1_mac_address> with the MAC address of the bare metal node's first NIC. See the "BMC addressing" section for additional BMC configuration options. 15 Replace <protocol> with the BMC protocol, such as IPMI, RedFish, or others. Replace <bmc_url> with the URL of the bare metal node's baseboard management controller. 17 To skip certificate validation, set disableCertificateVerification to true. 18 19 Replace <bmc_username> and <bmc_password> with the string of the BMC user name and password. 20 Optional: Replace <root_device_hint> with a device path if you specify a root device hint. 21 Optional: If you have configured the network interface for the newly created node, provide the network configuration secret name in the preprovisioningNetworkDataName of the BareMetalHost CR. DHCP configuration bmh.yaml : --- apiVersion: v1 kind: Secret metadata: name: openshift-worker-<num>-bmc-secret 1 namespace: openshift-machine-api type: Opaque data: username: <base64_of_uid> 2 password: <base64_of_pwd> 3 --- apiVersion: metal3.io/v1alpha1 kind: BareMetalHost metadata: name: openshift-worker-<num> 4 namespace: openshift-machine-api spec: online: True bootMACAddress: <nic1_mac_address> 5 bmc: address: <protocol>://<bmc_url> 6 credentialsName: openshift-worker-<num>-bmc-secret 7 disableCertificateVerification: True 8 username: <bmc_username> 9 password: <bmc_password> 10 rootDeviceHints: deviceName: <root_device_hint> 11 preprovisioningNetworkDataName: openshift-worker-<num>-network-config-secret 12 1 4 7 Replace <num> for the worker number of the bare metal node in the name fields, the credentialsName field, and the preprovisioningNetworkDataName field. 2 3 Replace <base64_of_uid> and <base64_of_pwd> with the base64 string of the user name and password. 5 Replace <nic1_mac_address> with the MAC address of the bare metal node's first NIC. See the "BMC addressing" section for additional BMC configuration options. 6 Replace <protocol> with the BMC protocol, such as IPMI, RedFish, or others. Replace <bmc_url> with the URL of the bare metal node's baseboard management controller. 8 To skip certificate validation, set disableCertificateVerification to true. 9 10 Replace <bmc_username> and <bmc_password> with the string of the BMC user name and password. 11 Optional: Replace <root_device_hint> with a device path if you specify a root device hint. 12 Optional: If you have configured the network interface for the newly created node, provide the network configuration secret name in the preprovisioningNetworkDataName of the BareMetalHost CR. Note If the MAC address of an existing bare metal node matches the MAC address of a bare metal host that you are attempting to provision, then the Ironic installation will fail. If the host enrollment, inspection, cleaning, or other Ironic steps fail, the Bare Metal Operator retries the installation continuously. See "Diagnosing a host duplicate MAC address" for more information. Create the bare metal node: USD oc -n openshift-machine-api create -f bmh.yaml Example output secret/openshift-worker-<num>-network-config-secret created secret/openshift-worker-<num>-bmc-secret created baremetalhost.metal3.io/openshift-worker-<num> created Where <num> will be the worker number. Power up and inspect the bare metal node: USD oc -n openshift-machine-api get bmh openshift-worker-<num> Where <num> is the worker node number. Example output NAME STATE CONSUMER ONLINE ERROR openshift-worker-<num> available true Note To allow the worker node to join the cluster, scale the machineset object to the number of the BareMetalHost objects. You can scale nodes either manually or automatically. To scale nodes automatically, use the metal3.io/autoscale-to-hosts annotation for machineset . Additional resources See Optional: Configuring host network interfaces in the install-config.yaml file for details on configuring the NMState syntax. See Automatically scaling machines to the number of available bare metal hosts for details on automatically scaling machines. 7.2. Replacing a bare-metal control plane node Use the following procedure to replace an installer-provisioned OpenShift Container Platform control plane node. Important If you reuse the BareMetalHost object definition from an existing control plane host, do not leave the externallyProvisioned field set to true . Existing control plane BareMetalHost objects may have the externallyProvisioned flag set to true if they were provisioned by the OpenShift Container Platform installation program. Prerequisites You have access to the cluster as a user with the cluster-admin role. You have taken an etcd backup. Important Take an etcd backup before performing this procedure so that you can restore your cluster if you encounter any issues. For more information about taking an etcd backup, see the Additional resources section. Procedure Ensure that the Bare Metal Operator is available: USD oc get clusteroperator baremetal Example output NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE MESSAGE baremetal 4.14.0 True False False 3d15h Remove the old BareMetalHost and Machine objects: USD oc delete bmh -n openshift-machine-api <host_name> USD oc delete machine -n openshift-machine-api <machine_name> Replace <host_name> with the name of the host and <machine_name> with the name of the machine. The machine name appears under the CONSUMER field. After you remove the BareMetalHost and Machine objects, then the machine controller automatically deletes the Node object. Create the new BareMetalHost object and the secret to store the BMC credentials: USD cat <<EOF | oc apply -f - apiVersion: v1 kind: Secret metadata: name: control-plane-<num>-bmc-secret 1 namespace: openshift-machine-api data: username: <base64_of_uid> 2 password: <base64_of_pwd> 3 type: Opaque --- apiVersion: metal3.io/v1alpha1 kind: BareMetalHost metadata: name: control-plane-<num> 4 namespace: openshift-machine-api spec: automatedCleaningMode: disabled bmc: address: <protocol>://<bmc_ip> 5 credentialsName: control-plane-<num>-bmc-secret 6 bootMACAddress: <NIC1_mac_address> 7 bootMode: UEFI externallyProvisioned: false online: true EOF 1 4 6 Replace <num> for the control plane number of the bare metal node in the name fields and the credentialsName field. 2 Replace <base64_of_uid> with the base64 string of the user name. 3 Replace <base64_of_pwd> with the base64 string of the password. 5 Replace <protocol> with the BMC protocol, such as redfish , redfish-virtualmedia , idrac-virtualmedia , or others. Replace <bmc_ip> with the IP address of the bare metal node's baseboard management controller. For additional BMC configuration options, see "BMC addressing" in the Additional resources section. 7 Replace <NIC1_mac_address> with the MAC address of the bare metal node's first NIC. After the inspection is complete, the BareMetalHost object is created and available to be provisioned. View available BareMetalHost objects: USD oc get bmh -n openshift-machine-api Example output NAME STATE CONSUMER ONLINE ERROR AGE control-plane-1.example.com available control-plane-1 true 1h10m control-plane-2.example.com externally provisioned control-plane-2 true 4h53m control-plane-3.example.com externally provisioned control-plane-3 true 4h53m compute-1.example.com provisioned compute-1-ktmmx true 4h53m compute-1.example.com provisioned compute-2-l2zmb true 4h53m There are no MachineSet objects for control plane nodes, so you must create a Machine object instead. You can copy the providerSpec from another control plane Machine object. Create a Machine object: USD cat <<EOF | oc apply -f - apiVersion: machine.openshift.io/v1beta1 kind: Machine metadata: annotations: metal3.io/BareMetalHost: openshift-machine-api/control-plane-<num> 1 labels: machine.openshift.io/cluster-api-cluster: control-plane-<num> 2 machine.openshift.io/cluster-api-machine-role: master machine.openshift.io/cluster-api-machine-type: master name: control-plane-<num> 3 namespace: openshift-machine-api spec: metadata: {} providerSpec: value: apiVersion: baremetal.cluster.k8s.io/v1alpha1 customDeploy: method: install_coreos hostSelector: {} image: checksum: "" url: "" kind: BareMetalMachineProviderSpec metadata: creationTimestamp: null userData: name: master-user-data-managed EOF 1 2 3 Replace <num> for the control plane number of the bare metal node in the name , labels and annotations fields. To view the BareMetalHost objects, run the following command: USD oc get bmh -A Example output NAME STATE CONSUMER ONLINE ERROR AGE control-plane-1.example.com provisioned control-plane-1 true 2h53m control-plane-2.example.com externally provisioned control-plane-2 true 5h53m control-plane-3.example.com externally provisioned control-plane-3 true 5h53m compute-1.example.com provisioned compute-1-ktmmx true 5h53m compute-2.example.com provisioned compute-2-l2zmb true 5h53m After the RHCOS installation, verify that the BareMetalHost is added to the cluster: USD oc get nodes Example output NAME STATUS ROLES AGE VERSION control-plane-1.example.com available master 4m2s v1.27.6 control-plane-2.example.com available master 141m v1.27.6 control-plane-3.example.com available master 141m v1.27.6 compute-1.example.com available worker 87m v1.27.6 compute-2.example.com available worker 87m v1.27.6 Note After replacement of the new control plane node, the etcd pod running in the new node is in crashloopback status. See "Replacing an unhealthy etcd member" in the Additional resources section for more information. Additional resources Replacing an unhealthy etcd member Backing up etcd Bare metal configuration BMC addressing 7.3. Preparing to deploy with Virtual Media on the baremetal network If the provisioning network is enabled and you want to expand the cluster using Virtual Media on the baremetal network, use the following procedure. Prerequisites There is an existing cluster with a baremetal network and a provisioning network. Procedure Edit the provisioning custom resource (CR) to enable deploying with Virtual Media on the baremetal network: oc edit provisioning apiVersion: metal3.io/v1alpha1 kind: Provisioning metadata: creationTimestamp: "2021-08-05T18:51:50Z" finalizers: - provisioning.metal3.io generation: 8 name: provisioning-configuration resourceVersion: "551591" uid: f76e956f-24c6-4361-aa5b-feaf72c5b526 spec: provisioningDHCPRange: 172.22.0.10,172.22.0.254 provisioningIP: 172.22.0.3 provisioningInterface: enp1s0 provisioningNetwork: Managed provisioningNetworkCIDR: 172.22.0.0/24 virtualMediaViaExternalNetwork: true 1 status: generations: - group: apps hash: "" lastGeneration: 7 name: metal3 namespace: openshift-machine-api resource: deployments - group: apps hash: "" lastGeneration: 1 name: metal3-image-cache namespace: openshift-machine-api resource: daemonsets observedGeneration: 8 readyReplicas: 0 1 Add virtualMediaViaExternalNetwork: true to the provisioning CR. If the image URL exists, edit the machineset to use the API VIP address. This step only applies to clusters installed in versions 4.9 or earlier. oc edit machineset apiVersion: machine.openshift.io/v1beta1 kind: MachineSet metadata: creationTimestamp: "2021-08-05T18:51:52Z" generation: 11 labels: machine.openshift.io/cluster-api-cluster: ostest-hwmdt machine.openshift.io/cluster-api-machine-role: worker machine.openshift.io/cluster-api-machine-type: worker name: ostest-hwmdt-worker-0 namespace: openshift-machine-api resourceVersion: "551513" uid: fad1c6e0-b9da-4d4a-8d73-286f78788931 spec: replicas: 2 selector: matchLabels: machine.openshift.io/cluster-api-cluster: ostest-hwmdt machine.openshift.io/cluster-api-machineset: ostest-hwmdt-worker-0 template: metadata: labels: machine.openshift.io/cluster-api-cluster: ostest-hwmdt machine.openshift.io/cluster-api-machine-role: worker machine.openshift.io/cluster-api-machine-type: worker machine.openshift.io/cluster-api-machineset: ostest-hwmdt-worker-0 spec: metadata: {} providerSpec: value: apiVersion: baremetal.cluster.k8s.io/v1alpha1 hostSelector: {} image: checksum: http:/172.22.0.3:6181/images/rhcos-<version>.<architecture>.qcow2.<md5sum> 1 url: http://172.22.0.3:6181/images/rhcos-<version>.<architecture>.qcow2 2 kind: BareMetalMachineProviderSpec metadata: creationTimestamp: null userData: name: worker-user-data status: availableReplicas: 2 fullyLabeledReplicas: 2 observedGeneration: 11 readyReplicas: 2 replicas: 2 1 Edit the checksum URL to use the API VIP address. 2 Edit the url URL to use the API VIP address. 7.4. Diagnosing a duplicate MAC address when provisioning a new host in the cluster If the MAC address of an existing bare-metal node in the cluster matches the MAC address of a bare-metal host you are attempting to add to the cluster, the Bare Metal Operator associates the host with the existing node. If the host enrollment, inspection, cleaning, or other Ironic steps fail, the Bare Metal Operator retries the installation continuously. A registration error is displayed for the failed bare-metal host. You can diagnose a duplicate MAC address by examining the bare-metal hosts that are running in the openshift-machine-api namespace. Prerequisites Install an OpenShift Container Platform cluster on bare metal. Install the OpenShift Container Platform CLI oc . Log in as a user with cluster-admin privileges. Procedure To determine whether a bare-metal host that fails provisioning has the same MAC address as an existing node, do the following: Get the bare-metal hosts running in the openshift-machine-api namespace: USD oc get bmh -n openshift-machine-api Example output NAME STATUS PROVISIONING STATUS CONSUMER openshift-master-0 OK externally provisioned openshift-zpwpq-master-0 openshift-master-1 OK externally provisioned openshift-zpwpq-master-1 openshift-master-2 OK externally provisioned openshift-zpwpq-master-2 openshift-worker-0 OK provisioned openshift-zpwpq-worker-0-lv84n openshift-worker-1 OK provisioned openshift-zpwpq-worker-0-zd8lm openshift-worker-2 error registering To see more detailed information about the status of the failing host, run the following command replacing <bare_metal_host_name> with the name of the host: USD oc get -n openshift-machine-api bmh <bare_metal_host_name> -o yaml Example output ... status: errorCount: 12 errorMessage: MAC address b4:96:91:1d:7c:20 conflicts with existing node openshift-worker-1 errorType: registration error ... 7.5. Provisioning the bare metal node Provisioning the bare metal node requires executing the following procedure from the provisioner node. Procedure Ensure the STATE is available before provisioning the bare metal node. USD oc -n openshift-machine-api get bmh openshift-worker-<num> Where <num> is the worker node number. NAME STATE ONLINE ERROR AGE openshift-worker available true 34h Get a count of the number of worker nodes. USD oc get nodes NAME STATUS ROLES AGE VERSION openshift-master-1.openshift.example.com Ready master 30h v1.27.3 openshift-master-2.openshift.example.com Ready master 30h v1.27.3 openshift-master-3.openshift.example.com Ready master 30h v1.27.3 openshift-worker-0.openshift.example.com Ready worker 30h v1.27.3 openshift-worker-1.openshift.example.com Ready worker 30h v1.27.3 Get the compute machine set. USD oc get machinesets -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE ... openshift-worker-0.example.com 1 1 1 1 55m openshift-worker-1.example.com 1 1 1 1 55m Increase the number of worker nodes by one. USD oc scale --replicas=<num> machineset <machineset> -n openshift-machine-api Replace <num> with the new number of worker nodes. Replace <machineset> with the name of the compute machine set from the step. Check the status of the bare metal node. USD oc -n openshift-machine-api get bmh openshift-worker-<num> Where <num> is the worker node number. The STATE changes from ready to provisioning . NAME STATE CONSUMER ONLINE ERROR openshift-worker-<num> provisioning openshift-worker-<num>-65tjz true The provisioning status remains until the OpenShift Container Platform cluster provisions the node. This can take 30 minutes or more. After the node is provisioned, the state will change to provisioned . NAME STATE CONSUMER ONLINE ERROR openshift-worker-<num> provisioned openshift-worker-<num>-65tjz true After provisioning completes, ensure the bare metal node is ready. USD oc get nodes NAME STATUS ROLES AGE VERSION openshift-master-1.openshift.example.com Ready master 30h v1.27.3 openshift-master-2.openshift.example.com Ready master 30h v1.27.3 openshift-master-3.openshift.example.com Ready master 30h v1.27.3 openshift-worker-0.openshift.example.com Ready worker 30h v1.27.3 openshift-worker-1.openshift.example.com Ready worker 30h v1.27.3 openshift-worker-<num>.openshift.example.com Ready worker 3m27s v1.27.3 You can also check the kubelet. USD ssh openshift-worker-<num> [kni@openshift-worker-<num>]USD journalctl -fu kubelet

Commands:
curl -s https://mirror.openshift.com/pub/openshift-v4/clients/ocp/USDVERSION/openshift-client-linux-USDVERSION.tar.gz | tar zxvf - oc
sudo cp oc /usr/local/bin
echo -ne "root" | base64
echo -ne "password" | base64
vim bmh.yaml
--- apiVersion: v1 1 kind: Secret metadata: name: openshift-worker-<num>-network-config-secret 2 namespace: openshift-machine-api type: Opaque stringData: nmstate: | 3 interfaces: 4 - name: <nic1_name> 5 type: ethernet state: up ipv4: address: - ip: <ip_address> 6 prefix-length: 24 enabled: true dns-resolver: config: server: - <dns_ip_address> 7 routes: config: - destination: 0.0.0.0/0 next-hop-address: <next_hop_ip_address> 8 next-hop-interface: <next_hop_nic1_name> 9 --- apiVersion: v1 kind: Secret metadata: name: openshift-worker-<num>-bmc-secret 10 namespace: openshift-machine-api type: Opaque data: username: <base64_of_uid> 11 password: <base64_of_pwd> 12 --- apiVersion: metal3.io/v1alpha1 kind: BareMetalHost metadata: name: openshift-worker-<num> 13 namespace: openshift-machine-api spec: online: True bootMACAddress: <nic1_mac_address> 14 bmc: address: <protocol>://<bmc_url> 15 credentialsName: openshift-worker-<num>-bmc-secret 16 disableCertificateVerification: True 17 username: <bmc_username> 18 password: <bmc_password> 19 rootDeviceHints: deviceName: <root_device_hint> 20 preprovisioningNetworkDataName: openshift-worker-<num>-network-config-secret 21
--- interfaces: - name: <nic_name> type: ethernet state: up ipv4: enabled: false ipv6: enabled: false
--- apiVersion: v1 kind: Secret metadata: name: openshift-worker-<num>-bmc-secret 1 namespace: openshift-machine-api type: Opaque data: username: <base64_of_uid> 2 password: <base64_of_pwd> 3 --- apiVersion: metal3.io/v1alpha1 kind: BareMetalHost metadata: name: openshift-worker-<num> 4 namespace: openshift-machine-api spec: online: True bootMACAddress: <nic1_mac_address> 5 bmc: address: <protocol>://<bmc_url> 6 credentialsName: openshift-worker-<num>-bmc-secret 7 disableCertificateVerification: True 8 username: <bmc_username> 9 password: <bmc_password> 10 rootDeviceHints: deviceName: <root_device_hint> 11 preprovisioningNetworkDataName: openshift-worker-<num>-network-config-secret 12
oc -n openshift-machine-api create -f bmh.yaml
secret/openshift-worker-<num>-network-config-secret created secret/openshift-worker-<num>-bmc-secret created baremetalhost.metal3.io/openshift-worker-<num> created
oc -n openshift-machine-api get bmh openshift-worker-<num>
NAME STATE CONSUMER ONLINE ERROR openshift-worker-<num> available true
oc get clusteroperator baremetal
NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE MESSAGE baremetal 4.14.0 True False False 3d15h
oc delete bmh -n openshift-machine-api <host_name> oc delete machine -n openshift-machine-api <machine_name>
cat <<EOF | oc apply -f - apiVersion: v1 kind: Secret metadata: name: control-plane-<num>-bmc-secret 1 namespace: openshift-machine-api data: username: <base64_of_uid> 2 password: <base64_of_pwd> 3 type: Opaque --- apiVersion: metal3.io/v1alpha1 kind: BareMetalHost metadata: name: control-plane-<num> 4 namespace: openshift-machine-api spec: automatedCleaningMode: disabled bmc: address: <protocol>://<bmc_ip> 5 credentialsName: control-plane-<num>-bmc-secret 6 bootMACAddress: <NIC1_mac_address> 7 bootMode: UEFI externallyProvisioned: false online: true EOF
oc get bmh -n openshift-machine-api
NAME STATE CONSUMER ONLINE ERROR AGE control-plane-1.example.com available control-plane-1 true 1h10m control-plane-2.example.com externally provisioned control-plane-2 true 4h53m control-plane-3.example.com externally provisioned control-plane-3 true 4h53m compute-1.example.com provisioned compute-1-ktmmx true 4h53m compute-1.example.com provisioned compute-2-l2zmb true 4h53m
cat <<EOF | oc apply -f - apiVersion: machine.openshift.io/v1beta1 kind: Machine metadata: annotations: metal3.io/BareMetalHost: openshift-machine-api/control-plane-<num> 1 labels: machine.openshift.io/cluster-api-cluster: control-plane-<num> 2 machine.openshift.io/cluster-api-machine-role: master machine.openshift.io/cluster-api-machine-type: master name: control-plane-<num> 3 namespace: openshift-machine-api spec: metadata: {} providerSpec: value: apiVersion: baremetal.cluster.k8s.io/v1alpha1 customDeploy: method: install_coreos hostSelector: {} image: checksum: "" url: "" kind: BareMetalMachineProviderSpec metadata: creationTimestamp: null userData: name: master-user-data-managed EOF
oc get bmh -A
NAME STATE CONSUMER ONLINE ERROR AGE control-plane-1.example.com provisioned control-plane-1 true 2h53m control-plane-2.example.com externally provisioned control-plane-2 true 5h53m control-plane-3.example.com externally provisioned control-plane-3 true 5h53m compute-1.example.com provisioned compute-1-ktmmx true 5h53m compute-2.example.com provisioned compute-2-l2zmb true 5h53m
oc get nodes
NAME STATUS ROLES AGE VERSION control-plane-1.example.com available master 4m2s v1.27.6 control-plane-2.example.com available master 141m v1.27.6 control-plane-3.example.com available master 141m v1.27.6 compute-1.example.com available worker 87m v1.27.6 compute-2.example.com available worker 87m v1.27.6
edit provisioning
apiVersion: metal3.io/v1alpha1 kind: Provisioning metadata: creationTimestamp: "2021-08-05T18:51:50Z" finalizers: - provisioning.metal3.io generation: 8 name: provisioning-configuration resourceVersion: "551591" uid: f76e956f-24c6-4361-aa5b-feaf72c5b526 spec: provisioningDHCPRange: 172.22.0.10,172.22.0.254 provisioningIP: 172.22.0.3 provisioningInterface: enp1s0 provisioningNetwork: Managed provisioningNetworkCIDR: 172.22.0.0/24 virtualMediaViaExternalNetwork: true 1 status: generations: - group: apps hash: "" lastGeneration: 7 name: metal3 namespace: openshift-machine-api resource: deployments - group: apps hash: "" lastGeneration: 1 name: metal3-image-cache namespace: openshift-machine-api resource: daemonsets observedGeneration: 8 readyReplicas: 0
edit machineset
apiVersion: machine.openshift.io/v1beta1 kind: MachineSet metadata: creationTimestamp: "2021-08-05T18:51:52Z" generation: 11 labels: machine.openshift.io/cluster-api-cluster: ostest-hwmdt machine.openshift.io/cluster-api-machine-role: worker machine.openshift.io/cluster-api-machine-type: worker name: ostest-hwmdt-worker-0 namespace: openshift-machine-api resourceVersion: "551513" uid: fad1c6e0-b9da-4d4a-8d73-286f78788931 spec: replicas: 2 selector: matchLabels: machine.openshift.io/cluster-api-cluster: ostest-hwmdt machine.openshift.io/cluster-api-machineset: ostest-hwmdt-worker-0 template: metadata: labels: machine.openshift.io/cluster-api-cluster: ostest-hwmdt machine.openshift.io/cluster-api-machine-role: worker machine.openshift.io/cluster-api-machine-type: worker machine.openshift.io/cluster-api-machineset: ostest-hwmdt-worker-0 spec: metadata: {} providerSpec: value: apiVersion: baremetal.cluster.k8s.io/v1alpha1 hostSelector: {} image: checksum: http:/172.22.0.3:6181/images/rhcos-<version>.<architecture>.qcow2.<md5sum> 1 url: http://172.22.0.3:6181/images/rhcos-<version>.<architecture>.qcow2 2 kind: BareMetalMachineProviderSpec metadata: creationTimestamp: null userData: name: worker-user-data status: availableReplicas: 2 fullyLabeledReplicas: 2 observedGeneration: 11 readyReplicas: 2 replicas: 2
oc get bmh -n openshift-machine-api
NAME STATUS PROVISIONING STATUS CONSUMER openshift-master-0 OK externally provisioned openshift-zpwpq-master-0 openshift-master-1 OK externally provisioned openshift-zpwpq-master-1 openshift-master-2 OK externally provisioned openshift-zpwpq-master-2 openshift-worker-0 OK provisioned openshift-zpwpq-worker-0-lv84n openshift-worker-1 OK provisioned openshift-zpwpq-worker-0-zd8lm openshift-worker-2 error registering
oc get -n openshift-machine-api bmh <bare_metal_host_name> -o yaml
status: errorCount: 12 errorMessage: MAC address b4:96:91:1d:7c:20 conflicts with existing node openshift-worker-1 errorType: registration error
oc -n openshift-machine-api get bmh openshift-worker-<num>
NAME STATE ONLINE ERROR AGE openshift-worker available true 34h
oc get nodes
NAME STATUS ROLES AGE VERSION openshift-master-1.openshift.example.com Ready master 30h v1.27.3 openshift-master-2.openshift.example.com Ready master 30h v1.27.3 openshift-master-3.openshift.example.com Ready master 30h v1.27.3 openshift-worker-0.openshift.example.com Ready worker 30h v1.27.3 openshift-worker-1.openshift.example.com Ready worker 30h v1.27.3
oc get machinesets -n openshift-machine-api
NAME DESIRED CURRENT READY AVAILABLE AGE openshift-worker-0.example.com 1 1 1 1 55m openshift-worker-1.example.com 1 1 1 1 55m
oc scale --replicas=<num> machineset <machineset> -n openshift-machine-api
oc -n openshift-machine-api get bmh openshift-worker-<num>
NAME STATE CONSUMER ONLINE ERROR openshift-worker-<num> provisioning openshift-worker-<num>-65tjz true
NAME STATE CONSUMER ONLINE ERROR openshift-worker-<num> provisioned openshift-worker-<num>-65tjz true
oc get nodes
NAME STATUS ROLES AGE VERSION openshift-master-1.openshift.example.com Ready master 30h v1.27.3 openshift-master-2.openshift.example.com Ready master 30h v1.27.3 openshift-master-3.openshift.example.com Ready master 30h v1.27.3 openshift-worker-0.openshift.example.com Ready worker 30h v1.27.3 openshift-worker-1.openshift.example.com Ready worker 30h v1.27.3 openshift-worker-<num>.openshift.example.com Ready worker 3m27s v1.27.3
ssh openshift-worker-<num>
[kni@openshift-worker-<num>]USD journalctl -fu kubelet