DX-15648: add imagePullPolicy attribute

Change-Id: I3eb55833c565ef0e7417369d3b8aa20d764f85c0

Author: Nirmalya Sen

charts/dremio/templates/dremio-coordinator.yaml

@@ -27,6 +27,7 @@ spec:
       containers:
       - name: dremio-coordinator
         image: {{.Values.image}}
+        imagePullPolicy: IfNotPresent
         resources:
           requests:
             memory: {{.Values.coordinator.memory}}M

charts/dremio/templates/dremio-executor.yaml

@@ -27,6 +27,7 @@ spec:
       containers:
       - name: dremio-executor
         image: {{.Values.image}}
+        imagePullPolicy: IfNotPresent
         resources:
           requests:
             memory: {{.Values.executor.memory}}M
@@ -61,6 +62,7 @@ spec:
       # since we're mounting a separate volume, reset permission to dremio uid/gid
       - name: chown-data-directory
         image: {{.Values.image}}
+        imagePullPolicy: IfNotPresent
         securityContext:
           runAsUser: 0
         volumeMounts:

charts/dremio/templates/dremio-master.yaml

@@ -30,6 +30,7 @@ spec:
       containers:
       - name: dremio-master-coordinator
         image: {{.Values.image}}
+        imagePullPolicy: IfNotPresent
         resources:
           requests:
             memory: {{.Values.coordinator.memory}}M
@@ -69,6 +70,7 @@ spec:
       # since we're mounting a separate volume, reset permission to dremio uid/gid
       - name: chown-data-directory
         image: {{.Values.image}}
+        imagePullPolicy: IfNotPresent
         securityContext:
           runAsUser: 0
         volumeMounts:
@@ -80,6 +82,7 @@ spec:
         - "/opt/dremio/data"
       - name: upgrade-task
         image: {{.Values.image}}
+        imagePullPolicy: IfNotPresent
         volumeMounts:
         - name: dremio-master-volume
           mountPath: /opt/dremio/data

charts/dremio/values.yaml

@@ -1,4 +1,8 @@
-image: dremio/dremio-oss
+# The image used to build the Dremio cluster. It is recommended to update the
+# version tag to the version that you are using. This will ensure that all
+# the pods are using the same version of the software.
+image: dremio/dremio-oss:latest
+
 # Check out Dremio documentation for memory and cpu requirements for
 # the coordinators and the executors.
 # The value of memory should be in MB. CPU is in no of cores.
@@ -18,6 +22,7 @@ executor:
   cpu: 4
   count: 1
   volumeSize: 20Gi
+
 # If your Kubernetes cluster does not support LoadBalancer,
 # comment out the line below for the helm chart to succeed or add
 # the correct serviceType for your cluster.