Feature 11032: Documentation about OSM Helm chart integration with different data bases

helm -n osm status osm

```

### Deploy OSM Using other databases

In case you want to use an already deployed `mysql` chart, before deploying the OSM Helm chart, edit the following values inside `devops/installers/helm/osm/values.yaml`: `global.db.mysql.mysqlSecretName`, `global.db.mysql.mysqlSecretKey`, and `global.db.mysql.mysqlService` to point to your `mysql`:

```yaml

global:

...

  db:

    mysql:

      mysqlSecretName: mysql

      mysqlSecretKey: mysql-root-password

      mysqlService: mysql

```

In case you want to use an already deployed `mongodb` chart, before deploying the OSM Helm chart, edit the value `global.db.mongo.mongoService` to point to your `mongodb`.

If `mongodb` was deployed with `auth.enabled=true`, then edit the values in the OSM Helm chart to match, setting `global.db.mongo.auth.enabled=true` and using `global.db.mongo.auth.secretName` and `global.db.mongo.auth.secretKeyRootPassword` to point to the existing secret.

```yaml

global:

...

  db:

    mongo:

      mongoService: mongodb-k8s

      auth:

        enabled: true

        secretName: mongodb-k8s

        secretKeyRootPassword: mongodb-root-password

```

Then, contiune to deploy the OSM Chart normally:

```bash

# Build the helm chart dependencies 

helm dependency build installers/helm/osm

# Check that there are no errors

helm -n osm template osm installers/helm/osm -f osm-values.yaml ${OSM_HELM_OPTS}

# Deploy OSM helm chart

helm -n osm install osm installers/helm/osm -f osm-values.yaml ${OSM_HELM_OPTS}

helm -n osm status osm

```

### Deploy NG-SA

```bash