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[release-4.18] OCPBUGS-54463: Update desired config in MCN on OCL update #5026

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[release-4.18] OCPBUGS-54463: Update desired config in MCN on OCL update #5026

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19 changes: 19 additions & 0 deletions pkg/daemon/update.go
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Original file line number Diff line number Diff line change
Expand Up @@ -837,6 +837,25 @@ func (dn *Daemon) updateOnClusterBuild(oldConfig, newConfig *mcfgv1.MachineConfi
oldConfigName := oldConfig.GetName()
newConfigName := newConfig.GetName()

// Add the desired config version to the MCN
// get MCP associated with node. Note that in 4.18 and prior only default worker
// & master node roles/MCPs are supported in MCN, thus the hard-coded label checks
// for determining MCP association.
pool := ""
var ok bool
if dn.node != nil {
if _, ok = dn.node.Labels["node-role.kubernetes.io/master"]; ok {
pool = "master"
} else if _, ok = dn.node.Labels["node-role.kubernetes.io/worker"]; ok {
pool = "worker"
}
}
// update the MCN spec
err := upgrademonitor.GenerateAndApplyMachineConfigNodeSpec(dn.featureGatesAccessor, pool, dn.node, dn.mcfgClient)
if err != nil {
return fmt.Errorf("error updating MCN spec for node %s: %w", dn.node.Name, err)
}

oldIgnConfig, err := ctrlcommon.ParseAndConvertConfig(oldConfig.Spec.Config.Raw)
if err != nil {
return fmt.Errorf("parsing old Ignition config failed: %w", err)
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