Support for init worker/coordinator init containers

Support for init worker/coordinator init containers

Author: habc12

charts/trino/README.md

@@ -39,6 +39,7 @@ The following table lists the configurable parameters of the Trino chart and the
 | `additionalExchangeManagerProperties` |  | `{}` |
 | `additionalCatalogs` |  | `{}` |
 | `env` |  | `[]` |
+| `initContainers` |  | `{}` |
 | `securityContext.runAsUser` |  | `1000` |
 | `securityContext.runAsGroup` |  | `1000` |
 | `service.type` |  | `"ClusterIP"` |

charts/trino/templates/deployment-coordinator.yaml

@@ -33,6 +33,10 @@ spec:
         - name: catalog-volume
           configMap:
             name: {{ template "trino.catalog" . }}
+      {{- if .Values.initContainers.coordinator }}
+      initContainers:
+      {{-  tpl (toYaml .Values.initContainers.coordinator) . | nindent 6 }}
+      {{- end }}
       imagePullSecrets:
         - name: registry-credentials
       containers:

charts/trino/templates/deployment-worker.yaml

@@ -30,6 +30,10 @@ spec:
         - name: catalog-volume
           configMap:
             name: {{ template "trino.catalog" . }}
+      {{- if .Values.initContainers.worker }}
+      initContainers:
+      {{-  tpl (toYaml .Values.initContainers.worker) . | nindent 6 }}
+      {{- end }}
       imagePullSecrets:
         - name: registry-credentials
       containers:

charts/trino/values.yaml

@@ -55,6 +55,17 @@ additionalCatalogs: {}
 # Array of EnvVar (https://v1-18.docs.kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#envvar-v1-core)
 env: []
 
+initContainers: {}
+  # coordinator:
+  #   - name: init-coordinator
+  #     image: busybox:1.28
+  #     imagePullPolicy: IfNotPresent
+  #     command: ['sh', '-c', "until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done"]
+  # worker:
+  #   - name: init-worker
+  #     image: busybox:1.28
+  #     command: ['sh', '-c', 'echo The worker is running! && sleep 3600']
+
 securityContext:
   runAsUser: 1000
   runAsGroup: 1000