Trendz Analytics Kubernetes 1.14.x Upgrade Instructions

Prepare for upgrading Trendz Analytics

Obtain Trendz Kubernetes scripts

Use the Kubernetes configuration files from your original installation. If you no longer have them, re-clone the repository and fill in your configuration values as described in the installation guide:

git clone https://github.com/thingsboard/trendz-k8s.git --depth 1

Connect to your Kubernetes cluster

Select the correct kube-config context before running any commands:

kubectl config get-contexts

kubectl config use-context <your-config-name>

Set trendz as the default namespace, so the commands below run in it:

kubectl config set-context --current --namespace=trendz

Back up the database

Back up the trendz database with pg_dump or your PostgreSQL provider's backup tools.

Upgrading Trendz Analytics to 1.14.0

Reduce pod count

Scale the deployment to one pod:

kubectl scale deployment trendz-app-deployment --replicas=1

Create upgrade flag file

Get the pod name:

kubectl get pods -l app=trendz-app-pod-label

Create the flag file in the pod. Replace <POD_NAME> and set the version you are currently running:

kubectl exec <POD_NAME> -- sh -c "echo '1.13.2' > /data/.upgradeversion"

Update image version

In trendz-app-deployment.yml, set the image to thingsboard/trendz:1.14.0 and apply it:

kubectl apply -f trendz-app-deployment.yml

Verify the upgrade

Check the pod logs:

kubectl logs -f <trendz-pod-name>

Expected output:

Upgrading Trendz from version …
…
Current version is …, upgrade is not needed
…
Started TrendzApplication in …

Restore pod count

kubectl scale deployment trendz-app-deployment --replicas=<pod-count>

Upload widget bundle to ThingsBoard

After the upgrade, upload the latest Trendz widget bundle and JS module to ThingsBoard. See the post-installation steps for details.

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