To deploy Postgres using Helm charts

1. Use the following command to save the PostgreSQL chart values to a file:

   helm show values postgresql-<version>.tgz > postgres-values.yaml

2. Use the following command to edit the chart values:

   vi postgres-values.yaml

3. Create NetBackup namespace by using the following command:
   kubectl create ns netbackup 
   
4. Execute the following command to deploy the PostgreSQL database:

   helm upgrade --install postgresql postgresql-<version>.tgz -f postgres-values.yaml -n netbackup

   Or

   If using the OCI registry, use the following command:

   helm upgrade --install postgresql oci://abcd.veritas.com:5000/helm-charts/netbackup-postgresql --version <version> -f postgres-values.yaml -n netbackup

   Following is the output of the above command:

   helm show values postgresql-10.4.tgz > postgres-values.yaml
   vi postgres-values.yaml
    
   helm upgrade --install postgresql postgresql-10.4.tgz -f postgres-values.yaml -n netbackup
   Release "postgresql" does not exist. Installing it now.
   NAME: postgresql
   LAST DEPLOYED: Tue Feb 27 00:43:17 2024
   NAMESPACE: netbackup
   STATUS: deployed
   REVISION: 1
   TEST SUITE: None
   

   Following is an example for postgres-values.yaml file:

   # Copyright (c) 2024 Veritas Technologies LLC. All rights reserved
    
   # Default values for postgresql.
   global:
     environmentNamespace: "netbackup"
     containerRegistry: "364956537575.dkr.ecr.us-east-1.amazonaws.com"
     
   postgresql:
     replicas: 1
     # The values in the image (name, tag) are placeholders. These will be set
     # when the deploy_nb_cloudscale.sh runs.
     image:
       name: "netbackup/postgresql"
       tag: "14.11.1.0"
       pullPolicy: Always
     service:
       serviceName: nb-postgresql
     volume:
       volumeClaimName: nb-psql-pvc
       volumeDefaultMode: 0640
       pvcStorage: 5Gi
       # configMapName: nbpsqlconf
       storageClassName: nb-disk-premium
       mountPathData: /netbackup/postgresqldb
       secretMountPath: /netbackup/postgresql/keys/server
       # mountConf: /netbackup
       timezone: null
     securityContext:
       runAsUser: 0
     createCerts: true
     # pgbouncerIniPath: /netbackup/pgbouncer.ini
     serverSecretName: postgresql-server-crt
     clientSecretName: postgresql-client-crt
     dbSecretName: dbsecret
     dbPort: 13785
     pgbouncerPort: 13787
     dbAdminName: postgres
     initialDbAdminPassword: postgres
     dataDir: /netbackup/postgresqldb
     # postgresqlConfFilePath: /netbackup/postgresql.conf
     # pgHbaConfFilePath: /netbackup/pg_hba.conf
     defaultPostgresqlHostName: nb-postgresql