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133 lines
4.3 KiB
Plaintext
133 lines
4.3 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * edge_computing/day_2_core_cnf_clusters/updating/update-ocp-update-prep.adoc
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:_mod-docs-content-type: PROCEDURE
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[id="update-creating-mcp-groups-for-the-cluster_{context}"]
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= Creating MachineConfigPool groups for the cluster
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[role="_abstract"]
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Creating `mcp` groups is a 2-step process:
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. Add an `mcp` label to the nodes in the cluster
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. Apply an `mcp` CR to the cluster that organizes the nodes based on their labels
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.Procedure
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. Label the nodes so that they can be put into `mcp` groups.
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Run the following commands:
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+
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[source,terminal]
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----
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$ oc label node worker-0 node-role.kubernetes.io/mcp-1=
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----
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[source,terminal]
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----
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$ oc label node worker-1 node-role.kubernetes.io/mcp-2=
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----
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The `mcp-1` and `mcp-2` labels are applied to the nodes.
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For example:
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.Example output
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[source,terminal]
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----
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NAME STATUS ROLES AGE VERSION
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ctrl-plane-0 Ready control-plane,master 39d v1.27.15+6147456
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ctrl-plane-1 Ready control-plane,master 39d v1.27.15+6147456
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ctrl-plane-2 Ready control-plane,master 39d v1.27.15+6147456
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worker-0 Ready mcp-1,worker 39d v1.27.15+6147456
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worker-1 Ready mcp-2,worker 39d v1.27.15+6147456
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----
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. Create YAML custom resources (CRs) that apply the labels as `mcp` CRs in the cluster.
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Save the following YAML in the `mcps.yaml` file:
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+
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[source,yaml]
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----
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---
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apiVersion: machineconfiguration.openshift.io/v1
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kind: MachineConfigPool
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metadata:
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name: mcp-2
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spec:
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machineConfigSelector:
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matchExpressions:
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- {
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key: machineconfiguration.openshift.io/role,
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operator: In,
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values: [worker,mcp-2]
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}
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nodeSelector:
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matchLabels:
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node-role.kubernetes.io/mcp-2: ""
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---
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apiVersion: machineconfiguration.openshift.io/v1
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kind: MachineConfigPool
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metadata:
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name: mcp-1
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spec:
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machineConfigSelector:
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matchExpressions:
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- {
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key: machineconfiguration.openshift.io/role,
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operator: In,
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values: [worker,mcp-1]
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}
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nodeSelector:
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matchLabels:
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node-role.kubernetes.io/mcp-1: ""
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----
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. Create the `MachineConfigPool` resources:
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[source,terminal]
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----
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$ oc apply -f mcps.yaml
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----
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.Example output
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[source,terminal]
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----
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machineconfigpool.machineconfiguration.openshift.io/mcp-2 created
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----
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.Verification
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Monitor the `MachineConfigPool` resources as they are applied in the cluster.
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After you apply the `mcp` resources, the nodes are added into the new machine config pools.
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This takes a few minutes.
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[NOTE]
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====
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The nodes do not reboot while being added into the `mcp` groups.
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The original worker and master `mcp` groups remain unchanged.
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====
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* Check the status of the new `mcp` resources:
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[source,terminal]
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----
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$ oc get mcp
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----
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.Example output
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[source,terminal]
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----
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NAME CONFIG UPDATED UPDATING DEGRADED MACHINECOUNT READYMACHINECOUNT UPDATEDMACHINECOUNT DEGRADEDMACHINECOUNT AGE
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master rendered-master-be3e83 True False False 3 3 3 0 25d
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mcp-1 rendered-mcp-1-2f4c4f False True True 1 0 0 0 10s
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mcp-2 rendered-mcp-2-2r4s1f False True True 1 0 0 0 10s
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worker rendered-worker-23fc4f False True True 0 0 0 2 25d
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----
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Eventually, the resources are fully applied:
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[source,terminal]
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----
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NAME CONFIG UPDATED UPDATING DEGRADED MACHINECOUNT READYMACHINECOUNT UPDATEDMACHINECOUNT DEGRADEDMACHINECOUNT AGE
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master rendered-master-be3e83 True False False 3 3 3 0 25d
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mcp-1 rendered-mcp-1-2f4c4f True False False 1 1 1 0 7m33s
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mcp-2 rendered-mcp-2-2r4s1f True False False 1 1 1 0 51s
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worker rendered-worker-23fc4f True False False 0 0 0 0 25d
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----
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