Configure the IAM endpoint by using Helm

When you deploy or upgrade the Logging agent, you can configure the logs-values.yaml file to set env.iamEnvironment to control the IAM endpoint that is used by the agent to exchange the tokens.

The default value is Production.

Valid values are: Production, PrivateProduction and Custom.

Update the file named logs-values.yaml that you use to deploy or upgrade the agent with the following content:

Set Production to use the iam.cloud.ibm.com default endpoint

Sample logs-values.yaml file looks as follows:
```
env:
  iamEnvironment: "Production"
```
Set PrivateProduction to use the private.iam.cloud.ibm.com endpoint

Sample logs-values.yaml file looks as follows:
```
env:
  iamEnvironment: "PrivateProduction"
```
Set Custom to use a custom IAM endpoint (for example private.eu-de.iam.cloud.ibm.com). You must also set env.iamHost.

Sample logs-values.yaml file looks as follows:
```
env:
  iamEnvironment: "Custom"
  iamHost: "private.eu-de.iam.cloud.ibm.com"
```

After you modify the logs-values.yaml, you can Upgrade the agent or continue modifying the file before applying all the changes.