fix(thanos): add pod antiaffinity for receivers to avoid scheduling on the same node

thanos/6-receiver.yaml

@@ -54,6 +54,18 @@ spec:
       serviceAccount: thanos
       securityContext:
         fsGroup: 1001
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - podAffinityTerm:
+              labelSelector:
+                matchExpressions:
+                - key: app.kubernetes.io/name
+                  operator: In
+                  values:
+                  - receiver
+              topologyKey: kubernetes.io/hostname
+            weight: 1
       initContainers:
         - name: init-chmod-data
           image: docker.io/bitnami/minideb:buster
@@ -193,6 +205,18 @@ spec:
       serviceAccount: thanos
       securityContext:
         fsGroup: 1001
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - podAffinityTerm:
+              labelSelector:
+                matchExpressions:
+                - key: app.kubernetes.io/name
+                  operator: In
+                  values:
+                  - receiver
+              topologyKey: kubernetes.io/hostname
+            weight: 1
       initContainers:
         - name: init-chmod-data
           image: docker.io/bitnami/minideb:buster