Upgrading the Helm Chart

Our goal is to upgrade the Helm chart to a new version, but this time we use a Helm repository. As in the previous example, we upgrade the chart by changing the image tag in values.yaml and updating the chart version in Chart.yaml.

# Update the image tag
sed -i 's/IMAGE_TAG=.*/IMAGE_TAG=v2/' $HOME/.bashrc
source $HOME/.bashrc

# Docker build with the new tag
docker build -t $IMAGE_REGISTRY:$IMAGE_TAG $HOME/todo/app

# Docker push with the new tag
docker push $IMAGE_REGISTRY:$IMAGE_TAG

Update values.yaml with the new image tag:

cat < $HOME/todo/app/manifests/helm/todo/values.yaml
# Set the replica count to 2 this time
replicaCount: 2
image:
  repository: $IMAGE_REGISTRY
  # This is the new image tag
  tag: $IMAGE_TAG
  pullPolicy: IfNotPresent
service:
  type: NodePort
  port: 5000
resources:
  limits:
    cpu: 100m
    memory: 128Mi
  requests:
    cpu: 100m
    memory: 128Mi
imagePullSecrets:
  - name: gitlab-registry
readinessProbe:
  httpGet:
    path: /tasks
    port: 5000
  initialDelaySeconds: 5
  periodSeconds: 10
autoscaling:
  enabled: false  
serviceAccount:
  create: false
ingress:
  enabled: false
httpRoute:
  enabled: false
EOF

Update the chart version (version) and the app version (appVersion) in Chart.yaml:

cat < $HOME/todo/app/manifests/helm/todo/Chart.yaml
apiVersion: v2
name: todo
description: A Helm chart to install the todo app
type: application
version

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