fix: add nodeselector for sim (#1094)

Author: ajasnosz

CHANGELOG.md

@@ -6,6 +6,7 @@
 - add metrics dashboard
 - add support for IPv6 polling and traps for kubernetes deployment
 - add support for IPv6 polling and traps for docker deployment
+- add nodeSelector and podAntiAffinity to sim chart
 
 ### Fixed
 

charts/splunk-connect-for-snmp/templates/sim/deployment.yaml

@@ -60,6 +60,29 @@ spec:
             - name: config
               mountPath: "/config"
               readOnly: true
+      {{- with .Values.sim.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- if eq .Values.sim.podAntiAffinity "hard" }}
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - topologyKey: "kubernetes.io/hostname"
+              labelSelector:
+                matchLabels:
+                    {{- include "splunk-connect-for-snmp.sim.selectorLabels" . | nindent 22 }}
+      {{- else if eq .Values.sim.podAntiAffinity "soft" }}
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - weight: 1
+              podAffinityTerm:
+                topologyKey: kubernetes.io/hostname
+                labelSelector:
+                  matchLabels:
+                    {{- include "splunk-connect-for-snmp.sim.selectorLabels" . | nindent 22 }}
+      {{- end }}
       volumes:
          - name: config
            configMap:

charts/splunk-connect-for-snmp/values.schema.json

@@ -247,6 +247,15 @@
               "type": "boolean"
             }
           }
+        },
+        "podAnnotations": {
+          "type": "object"
+        },
+        "podAntiAffinity": {
+          "type": "string"
+        },
+        "nodeSelector": {
+          "type": "object"
         }
       }
     },

charts/splunk-connect-for-snmp/values.yaml

@@ -126,6 +126,10 @@ sim:
   autoscaling:
     enabled: false
 
+  podAnnotations: { }
+  podAntiAffinity: soft
+  nodeSelector: { }
+
 ################################################################################
 # SC4SNMP components settings
 ################################################################################

docs/configuration/values-params-description.md

@@ -63,6 +63,9 @@ Detailed documentation about configuring sim can be found in [Splunk Infrastruct
 | `autoscaling.maxReplicas`                       | Maximum number of running pods when autoscaling is enabled                     |         |
 | `autoscaling.targetCPUUtilizationPercentage`    | CPU % threshold that must be exceeded on pods to spawn another replica         |         |
 | `autoscaling.targetMemoryUtilizationPercentage` | Memory % threshold that must be exceeded on pods to spawn another replica      |         |
+| `podAntiAffinity`                               | [Kubernetes documentation](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#affinity-and-anti-affinity) | `soft`  |
+| `nodeSelector`                                  | [Kubernetes documentation](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#nodeselector)               |         |
+
 
 ## Scheduler