mgr/dashboard: alerts module supports setting multiple email recipients

Signed-off-by: bugwz <[email protected]>

Author: bugwz

doc/mgr/alerts.rst

@@ -23,7 +23,8 @@ The *alerts* module is enabled with::
 Configuration
 -------------
 
-To configure SMTP, all of the following config options must be set::
+To configure SMTP, all of the following config options must be set
+(When setting ``mgr/alerts/smtp_destination``, you can use commas to separate multiple)::
 
   ceph config set mgr mgr/alerts/smtp_host *<smtp-server>*
   ceph config set mgr mgr/alerts/smtp_destination *<email-address-to-send-to>*

src/pybind/mgr/alerts/module.py

@@ -28,7 +28,7 @@ class Alerts(MgrModule):
         Option(
             name='smtp_destination',
             default='',
-            desc='Email address to send alerts to',
+            desc='Email address to send alerts to, use commas to separate multiple',
             runtime=True),
         Option(
             name='smtp_port',
@@ -243,7 +243,7 @@ def _send_alert_smtp(self,
                 server = smtplib.SMTP(self.smtp_host, self.smtp_port)
             if self.smtp_password:
                 server.login(self.smtp_user, self.smtp_password)
-            server.sendmail(self.smtp_sender, self.smtp_destination, message)
+            server.sendmail(self.smtp_sender, self.smtp_destination.split(','), message)
             server.quit()
         except Exception as e:
             return {