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servicelb pool selector 

adds a new optional node label
"svccontroller.k3s.cattle.io/lbpool=<pool>" that can be set on nodes.
ServiceType: LoadBalancer services can then specify a matching label,
which will schedule the DaemonSet only on specified nodes. This allows
operators to specify different pools of nodes that can serve different
LoadBalancer services on the same ports.

Signed-off-by: robertlestak <robert.lestak@umusic.com>
This commit is contained in:
robertlestak 2022-02-28 19:37:53 -08:00 committed by Brad Davidson
parent 232e00dd30
commit a82ac4fdc7
1 changed files with 9 additions and 4 deletions
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13
pkg/servicelb/controller.go
View File

@ -32,10 +32,11 @@ import (
)
var (
svcNameLabel = "svccontroller." + version.Program + ".cattle.io/svcname"
daemonsetNodeLabel = "svccontroller." + version.Program + ".cattle.io/enablelb"
nodeSelectorLabel = "svccontroller." + version.Program + ".cattle.io/nodeselector"
DefaultLBImage = "rancher/klipper-lb:v0.3.4"
svcNameLabel = "svccontroller." + version.Program + ".cattle.io/svcname"
daemonsetNodeLabel = "svccontroller." + version.Program + ".cattle.io/enablelb"
daemonsetNodePoolLabel = "svccontroller." + version.Program + ".cattle.io/lbpool"
nodeSelectorLabel = "svccontroller." + version.Program + ".cattle.io/nodeselector"
DefaultLBImage = "rancher/klipper-lb:v0.3.4"
)
const (
@ -499,6 +500,10 @@ func (h *handler) newDaemonSet(svc *core.Service) (*apps.DaemonSet, error) {
ds.Spec.Template.Spec.NodeSelector = map[string]string{
daemonsetNodeLabel: "true",
}
// Add node selector for "svccontroller.k3s.cattle.io/lbpool=<pool>" if service has lbpool label
if svc.Labels[daemonsetNodePoolLabel] != "" {
ds.Spec.Template.Spec.NodeSelector[daemonsetNodePoolLabel] = svc.Labels[daemonsetNodePoolLabel]
}
ds.Labels[nodeSelectorLabel] = "true"
}
return ds, nil