Description of problem:

When you install RHODS using the add-on-flow, there is a dialog that lets you configure e-mail notifications for alerts.

if you just add one e-mail address it works fine and e-mails are sent when we fill the notebook PVCs over 90% or 100%

The problem is that if you add multiple e-mail addresses (separated by space, as the dialog recommends) the e-mails are not sent because alertmanager complains about wrong configuration (more info below)

If we look at alertmanager's configmap, we see the list of e-mail addresses:

- name: 'user-notifications'
  email_configs:
  - to: 'jgarciao@redhat.com jgarciao@gmail.com bdattoma@redhat.com'
    send_resolved: false
    html: '{{ template "email.rhods.html" . }}'
    headers: 
      subject: '{{ template "email.rhods.subject" . }}'

After the users PVC is over 90% and the alert is firing in prometheus,  if we look at alertmanager's log, we see that the email with the alert was not sent because a configuration error. It's expecting a coma separated list of e-mail addresses:

level=error ts=2021-09-17T10:40:03.037Z caller=dispatch.go:309 component=dispatcher msg="Notify for alerts failed" num_alerts=1 err="user-notifications/email[0]: notify retry canceled due to unrecoverable error after 1 attempts: parse 'to' addresses: mail: expected comma"

Actual results:

User alarm e-mails are not sent

Expected results:

User alarm e-mails to be sent

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

I've tested this in ODS stage with RHODS v1.1.1-21