Apache Flink Operator - enable azure-fs-hadoop - azure

Question

I am trying to perform a flink job, using Flink Operator (https://github:com/apache/flink-kubernetes-operator) on k8s, that using uses a connection to Azure Blob Storage described here: https://nightlies.apache.org/flink/flink-docs-release-1.15/docs/deployment/filesystems/azure/
Following the guideline I need to copy the jar file flink-azure-fs-hadoop-1.15.0.jar from one directory to another.
I have already tried to do it via podTemplate and command functionality, but unfortunately it does not work, and the file does not appear in the destination directory.
Can you guide me on how to do it properly?
Below you can find my FlinkDeployment file.
apiVersion: flink.apache.org/v1beta1
kind: FlinkDeployment
metadata:
namespace: flink
name: basic-example
spec:
image: flink:1.15
flinkVersion: v1_15
flinkConfiguration:
taskmanager.numberOfTaskSlots: "2"
serviceAccount: flink
podTemplate:
apiVersion: v1
kind: Pod
metadata:
name: pod-template
spec:
serviceAccount: flink
containers:
- name: flink-main-container
volumeMounts:
- mountPath: /opt/flink/data
name: flink-data
# command:
# - "touch"
# - "/tmp/test.txt"
volumes:
- name: flink-data
emptyDir: { }
jobManager:
resource:
memory: "2048m"
cpu: 1
podTemplate:
apiVersion: v1
kind: Pod
metadata:
name: job-manager-pod-template
spec:
initContainers:
- name: fetch-jar
image: cirrusci/wget
volumeMounts:
- mountPath: /opt/flink/data
name: flink-data
command:
- "wget"
- "LINK_TO_CUSTOM_JAR_FILE_ON_AZURE_BLOB_STORAGE"
- "-O"
- "/opt/flink/data/test.jar"
containers:
- name: flink-main-container
command:
- "touch"
- "/tmp/test.txt"
taskManager:
resource:
memory: "2048m"
cpu: 1
job:
jarURI: local:///opt/flink/data/test.jar
parallelism: 2
upgradeMode: stateless
state: running
ingress:
template: "CUSTOM_LINK_TO_AZURE"
annotations:
cert-manager.io/cluster-issuer: letsencrypt
kubernetes.io/ingress.allow-http: 'false'
traefik.ingress.kubernetes.io/router.entrypoints: websecure
traefik.ingress.kubernetes.io/router.tls: 'true'
traefik.ingress.kubernetes.io/router.tls.options: default

Answer 1

Since you are using the stock Flink 1.15 image this Azure filesystem plugin comes built-in. You can enable it via setting the ENABLE_BUILT_IN_PLUGINS environment variable.
spec:
podTemplate:
containers:
# Do not change the main container name
- name: flink-main-container
env:
- name: ENABLE_BUILT_IN_PLUGINS
value: flink-azure-fs-hadoop-1.15.0.jar
https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/resource-providers/standalone/docker/#using-filesystem-plugins