[tempo-distributed] add readiness probe for memcached

charts/tempo-distributed/README.md

@@ -613,6 +613,7 @@ The memcached default args are removed and should be provided manually. The sett
 | memcached.maxUnavailable | int | `1` | Pod Disruption Budget maxUnavailable |
 | memcached.podAnnotations | object | `{}` | Annotations for memcached pods |
 | memcached.podLabels | object | `{}` | Labels for memcached pods |
+| memcached.readinessProbe | object | `{"initialDelaySeconds":5,"tcpSocket":{"port":"client"},"timeoutSeconds":1}` | Configures readinessProbe for memcached |
 | memcached.replicas | int | `1` |  |
 | memcached.resources | object | `{}` | Resource requests and limits for memcached |
 | memcached.service.annotations | object | `{}` | Annotations for memcached service |

charts/tempo-distributed/templates/memcached/statefulset-memcached.yaml

@@ -75,6 +75,8 @@ spec:
           envFrom:
             {{- toYaml . | nindent 12 }}
           {{- end }}
+          readinessProbe:
+            {{- toYaml .Values.memcached.readinessProbe | nindent 12 }}
           resources:
             {{- toYaml .Values.memcached.resources | nindent 12 }}
           {{- with .Values.tempo.securityContext }}

charts/tempo-distributed/values.yaml

@@ -1600,6 +1600,12 @@ memcached:
     # -- Memcached Docker image pull policy
     pullPolicy: IfNotPresent
   host: memcached
+  # -- Configures readinessProbe for memcached
+  readinessProbe:
+    initialDelaySeconds: 5
+    tcpSocket:
+      port: client
+    timeoutSeconds: 1
   # Number of replicas for memchached
   replicas: 1
   # -- Additional CLI args for memcached