Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 58 insertions, 0 deletions

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+Alerts module
+=============
+
+The alerts module can send simple alert messages about cluster health
+via e-mail.  In the future, it will support other notification methods
+as well.
+
+:note: This module is *not* intended to be a robust monitoring
+       solution.  The fact that it is run as part of the Ceph cluster
+       itself is fundamentally limiting in that a failure of the
+       ceph-mgr daemon prevents alerts from being sent.  This module
+       can, however, be useful for standalone clusters that exist in
+       environments where existing monitoring infrastructure does not
+       exist.
+
+Enabling
+--------
+
+The *alerts* module is enabled with::
+
+  ceph mgr module enable alerts
+
+Configuration
+-------------
+
+To configure SMTP, all of the following config options must be set::
+
+  ceph config set mgr mgr/alerts/smtp_host *<smtp-server>*
+  ceph config set mgr mgr/alerts/smtp_destination *<email-address-to-send-to>*
+  ceph config set mgr mgr/alerts/smtp_sender *<from-email-address>*
+
+By default, the module will use SSL and port 465.  To change that,::
+
+  ceph config set mgr mgr/alerts/smtp_ssl false   # if not SSL
+  ceph config set mgr mgr/alerts/smtp_port *<port-number>*  # if not 465
+
+To authenticate to the SMTP server, you must set the user and password::
+
+  ceph config set mgr mgr/alerts/smtp_user *<username>*
+  ceph config set mgr mgr/alerts/smtp_password *<password>*
+
+By default, the name in the ``From:`` line is simply ``Ceph``.  To
+change that (e.g., to identify which cluster this is),::
+
+  ceph config set mgr mgr/alerts/smtp_from_name 'Ceph Cluster Foo'
+
+By default, the module will check the cluster health once per minute
+and, if there is a change, send a message.  To change that
+frequency,::
+
+  ceph config set mgr mgr/alerts/interval *<interval>*   # e.g., "5m" for 5 minutes
+
+Commands
+--------
+
+To force an alert to be send immediately,::
+
+  ceph alerts send