Add nodeselector and tolerations for metallb (#7334)

* add nodeselector and tolerations for metallb

* remove unnecessary commented lines in metallb template

* set default speaker toleration to match original manifest

inventory/sample/group_vars/k8s-cluster/addons.yml

@@ -132,6 +132,28 @@ cert_manager_enabled: false
 metallb_enabled: false
 # metallb_ip_range:
 #   - "10.5.0.50-10.5.0.99"
+# metallb_speaker_nodeselector:
+#   kubernetes.io/os: "linux"
+# metallb_controller_nodeselector:
+#   kubernetes.io/os: "linux"
+# metallb_speaker_tolerations:
+#   - key: "node-role.kubernetes.io/master"
+#     operator: "Equal"
+#     value: ""
+#     effect: "NoSchedule"
+#   - key: "node-role.kubernetes.io/control-plane"
+#     operator: "Equal"
+#     value: ""
+#     effect: "NoSchedule"
+# metallb_controller_tolerations:
+#   - key: "node-role.kubernetes.io/master"
+#     operator: "Equal"
+#     value: ""
+#     effect: "NoSchedule"
+#   - key: "node-role.kubernetes.io/control-plane"
+#     operator: "Equal"
+#     value: ""
+#     effect: "NoSchedule"
 # metallb_version: v0.9.5
 # metallb_protocol: "layer2"
 # metallb_port: "7472"

roles/kubernetes-apps/metallb/defaults/main.yml

@@ -6,3 +6,11 @@ metallb_port: "7472"
 metallb_limits_cpu: "100m"
 metallb_limits_mem: "100Mi"
 metallb_peers: []
+metallb_speaker_nodeselector: {}
+metallb_controller_nodeselector: {}
+metallb_speaker_tolerations:
+  - effect: NoSchedule
+    key: node-role.kubernetes.io/master
+  - effect: NoSchedule
+    key: node-role.kubernetes.io/control-plane
+metallb_controller_tolerations: []

roles/kubernetes-apps/metallb/templates/metallb.yml.j2

@@ -345,11 +345,14 @@ spec:
         kubernetes.io/os: linux
       serviceAccountName: speaker
       terminationGracePeriodSeconds: 2
+{% if metallb_speaker_nodeselector %}
+      nodeSelector:
+        {{ metallb_speaker_nodeselector | to_nice_yaml | indent(width=8) }}
+{%- endif %}
+{% if metallb_speaker_tolerations %}
       tolerations:
-      - effect: NoSchedule
+        {{ metallb_speaker_tolerations | to_nice_yaml(indent=2) | indent(width=8) }}
-        key: node-role.kubernetes.io/master
+{% endif %}
-      - effect: NoSchedule
-        key: node-role.kubernetes.io/control-plane
 ---
 apiVersion: apps/v1
 kind: Deployment
@@ -374,6 +377,14 @@ spec:
         app: metallb
         component: controller
     spec:
+{% if metallb_controller_nodeselector %}
+      nodeSelector:
+        {{ metallb_controller_nodeselector | to_nice_yaml | indent(width=8) }}
+{%- endif %}
+{% if metallb_controller_tolerations %}
+      tolerations:
+        {{ metallb_controller_tolerations | to_nice_yaml(indent=2) | indent(width=8) }}
+{% endif %}
       containers:
       - args:
         - --port={{ metallb_port }}