Merge branch 'fs-mount-example' into 'master'

apiVersion: v1

description: A Helm chart example for deploying a pod and mounting NCCS filesystems

name: nccs-fs-mount

version: 1.0.0

# Simple deployment that mounts NCCS filesystems

This simple example utilizes the ["recreate" deployment strategy](https://docs.openshift.com/container-platform/4.4/applications/deployments/deployment-strategies.html#deployments-recreate-strategy_deployment-strategies).

It will mount the NCCS GPFS filesystem and NFS filesystem, running as your projects automation user.

{{/*

Expand the name of the chart.

*/}}

{{- define "{{ .Values.fs-deployment.name }}.name" -}}

{{- default .Release.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}

{{- end -}}

{{/*

Create a default fully qualified app name.

We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).

*/}}

{{- define "{{ .Values.fs-deployment.name }}.fullname" -}}

{{- $name := default "{{ .Values.fs-deployment.name }}" .Values.nameOverride -}}

{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}

{{- end -}}

apiVersion: apps/v1

kind: Deployment

metadata:

  # This annotation is what enables the NCCS filesystem mount

  annotations:

    ccs.ornl.gov/fs: olcf

  name: {{ .Values.fsMount.name }}

spec:

  selector:

    matchLabels:

      app: {{ .Values.fsMount.name }} # has to match .spec.template.metadata.labels

  strategy:

    # Specifies the strategy used to replace old Pods by new ones

    # Refer: https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#strategy

    type: Recreate

  template:

    metadata:

      labels:

        app: {{ .Values.fsMount.name }}

    spec:

      containers:

      - name: fs-deployment

        image: alpine:latest

        command:

        - sh

        - -c

        - 'exec tail -f /dev/null'

        resources:

          limits:

            cpu: {{ .Values.fsMount.resources.limits.cpu }}

            memory: {{ .Values.fsMount.resources.limits.memory }}

          requests:

            cpu: {{ .Values.fsMount.resources.requests.cpu }}

            memory: {{ .Values.fsMount.resources.requests.memory }}

# This can be used to provide variables to your chart. 

# A simple example would be resources in the minio-standalone-deployment.yaml:

fsMount:

  resources:

    requests:

      cpu: 2

      memory: 1Gi

    limits:

      cpu: 2

      memory: 1Gi

  name: fs-deployment