Volume
Define and mount Kubernetes volumes on Fission function containers through PodSpec so stateful functions can access attached data.
PodSpec lets you attach a Kubernetes volume to a function’s container.
Functions are typically stateless, but workloads like data pipelines need access to attached data.
You define a volume and then mount it on a specific container.
The example below creates a volume with the Kubernetes downward API, which dumps pod label information into a file, and mounts it on the function container at /etc/funcdata.
apiVersion: fission.io/v1
kind: Environment
...
spec:
podspec:
# A container which will be merged with for pool manager
containers:
- name: nodep
image: ghcr.io/fission/node-env
volumeMounts:
- name: funcvol
mountPath: /etc/funcdata
readOnly: true
volumes:
- name: funcvol
downwardAPI:
items:
- path: "labels"
fieldRef:
fieldPath: metadata.labels