feat: [PIDM-504] update deploy config

[dylantangredi-jakala]

List of Changes

• upgraded helm chart to v8.0.2 (NOTE: no autoscaling defined so no existing ScaledObject to migrate or created for this service)
• added rolling update strategy (maxUnavailable, maxSurge)
• overridden deployment replicas to match HPA minReplica config

Motivation and Context

This upgrade was required to address an issue with the rollout strategy and the autoscaler behaviour (if it will be enabled on this service), where the pods would scale down to 1 during deploy instead of keeping the same number of pods and doing +1 -1 to avoid traffic congestion. Also replicas are set to match the autoscaling config during deploy, to avoid starting the service with 1 pod when there is relevant traffic on the service.
This also ensures zero-downtime deployments by keeping all existing pods running until new versions are healthy and ready, then replacing them one at a time.

How Has This Been Tested?

❯ helm dependency update
Getting updates for unmanaged Helm repositories...
...Successfully got an update from the "https://pagopa.github.io/aks-microservice-chart-blueprint" chart repository
...Successfully got an update from the "https://pagopa.github.io/aks-cron-chart-blueprint" chart repository
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "bitnami" chart repository
Update Complete. ⎈Happy Helming!⎈
Saving 14 charts
Downloading microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Already downloaded microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Downloading cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Already downloaded cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Already downloaded microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Already downloaded microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Already downloaded microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Already downloaded cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Already downloaded cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Already downloaded cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Already downloaded microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Already downloaded cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Downloading microservice-chart from repo https://pagopa.github.io/aks-microservice-chart-blueprint
Already downloaded cron-chart from repo https://pagopa.github.io/aks-cron-chart-blueprint
Deleting outdated charts

❯ helm upgrade --namespace apiconfig \
    --install --values ./values-dev.yaml \
    --set postgresql.azure.workloadIdentityClientId=xxxxx \
    --set postgresql.podAnnotations.force-rollout="rollout-$(date +%s)" \
    --wait --timeout 15m0s \
    cache .
Release "cache" has been upgraded. Happy Helming!
NAME: cache
LAST DEPLOYED: Wed Oct 15 10:35:25 2025
NAMESPACE: apiconfig
STATUS: deployed
REVISION: 15
TEST SUITE: None

❯ kubectl get deployment cache-postgresql -n apiconfig -o jsonpath='{.metadata.labels.helm\.sh/blueprint-version}'
8.0.2%

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud