feat(controller): support app dns policy config

Author: jianxiaoguo

charts/controller/templates/_helpers.tpl

@@ -26,6 +26,10 @@ env:
 - name: "DRYCC_APP_RUNTIME_CLASS"
   value: "{{ .Values.appRuntimeClass }}"
 {{- end }}
+{{- if (.Values.appDNSPolicy) }}
+- name: "DRYCC_APP_DNS_POLICY"
+  value: "{{ .Values.appDNSPolicy }}"
+{{- end }}
 {{- if (.Values.appPodExecTimeout) }}
 - name: "DRYCC_APP_POD_EXEC_TIMEOUT"
   value: "{{ .Values.appPodExecTimeout }}"

charts/controller/values.yaml

@@ -20,6 +20,9 @@ k8sApiVerifyTls: "true"
 appStorageClass: "drycc-storage"
 # Set runtimeClassName. It is used for application.
 appRuntimeClass: ""
+# Set appDNSPolicy. It is used for application.
+# See: https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy
+appDNSPolicy: ""
 # set timeout seconds. It is used for pod exec
 appPodExecTimeout: 3600
 # Set api replicas

rootfs/api/models/app.py

@@ -1116,6 +1116,7 @@ def _gather_app_settings(self, release, app_settings, process_type, replicas, vo
             'annotations': json.loads(settings.KUBERNETES_POD_DEFAULT_ANNOTATIONS),
             'healthcheck': healthcheck,
             'runtime_class_name': settings.DRYCC_APP_RUNTIME_CLASS,
+            'dns_policy': settings.DRYCC_APP_DNS_POLICY,
             'lifecycle_post_start': config.lifecycle_post_start,
             'lifecycle_pre_stop': config.lifecycle_pre_stop,
             'routable': routable,

rootfs/api/settings/production.py

@@ -330,6 +330,8 @@
 
 DRYCC_APP_RUNTIME_CLASS = os.environ.get('DRYCC_APP_RUNTIME_CLASS', "")
 
+DRYCC_APP_DNS_POLICY = os.environ.get('DRYCC_APP_DNS_POLICY', "")
+
 DRYCC_APP_POD_EXEC_TIMEOUT = int(os.environ.get('DRYCC_APP_POD_EXEC_TIMEOUT', "3600"))
 
 DRYCC_DEFAULT_CONFIG_TAGS = os.environ.get('DRYCC_DEFAULT_CONFIG_TAGS', '')

rootfs/scheduler/resources/pod.py

@@ -158,6 +158,8 @@ def manifest(self, namespace, name, image, **kwargs):
         # pod runtimeClassName
         if kwargs.get('runtime_class_name', ''):
             spec['runtimeClassName'] = kwargs.get('runtime_class_name')
+        if kwargs.get('dns_policy', ''):
+            spec['dnsPolicy'] = kwargs.get('dns_policy')
 
         # what should the pod do if it exits
         spec['restartPolicy'] = kwargs.get('restart_policy', 'Always')