1 files changed, 118 insertions, 0 deletions
diff --git a/agents/alerts/alert_smtp.sh.sample b/agents/alerts/alert_smtp.sh.sample
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+++ b/agents/alerts/alert_smtp.sh.sample
@@ -0,0 +1,118 @@
+#!/bin/sh
+#
+# Copyright 2016-2021 the Pacemaker project contributors
+#
+# The version control history for this file may have further details.
+#
+# This source code is licensed under the GNU General Public License version 2
+# or later (GPLv2+) WITHOUT ANY WARRANTY.
+#
+##############################################################################
+#
+# Sample configuration (cib fragment in xml notation)
+# ================================
+# <configuration>
+#   <alerts>
+#     <alert id="smtp_alert" path="/path/to/alert_smtp">
+#       <instance_attributes id="config_for_alert_smtp">
+#         <nvpair id="cluster_name" name="cluster_name" value=""/>
+#         <nvpair id="email_client" name="email_client" value=""/>
+#         <nvpair id="email_sender" name="email_sender" value=""/>
+#       </instance_attributes>
+#       <recipient id="smtp_destination" value="admin@example.com"/>
+#     </alert>
+#   </alerts>
+# </configuration>
+
+# Explicitly list all environment variables used, to make static analysis happy
+: ${CRM_alert_version:=""}
+: ${CRM_alert_recipient:=""}
+: ${CRM_alert_timestamp:=""}
+: ${CRM_alert_kind:=""}
+: ${CRM_alert_node:=""}
+: ${CRM_alert_desc:=""}
+: ${CRM_alert_task:=""}
+: ${CRM_alert_rsc:=""}
+: ${CRM_alert_attribute_name:=""}
+: ${CRM_alert_attribute_value:=""}
+
+email_client_default="sendmail"
+email_sender_default="hacluster"
+email_recipient_default="root"
+
+: ${email_client=${email_client_default}}
+: ${email_sender=${email_sender_default}}
+email_recipient="${CRM_alert_recipient-${email_recipient_default}}"
+
+node_name=`uname -n`
+cluster_name=`crm_attribute --query -n cluster-name -q`
+email_body=`env | grep CRM_alert_`
+
+if [ ! -z "${email_sender##*@*}" ]; then
+    email_sender="${email_sender}@${node_name}"
+fi
+
+if [ ! -z "${email_recipient##*@*}" ]; then
+    email_recipient="${email_recipient}@${node_name}"
+fi
+
+if [ -z ${CRM_alert_version} ]; then
+    email_subject="Pacemaker version 1.1.15 or later is required for alerts"
+else
+    case ${CRM_alert_kind} in
+        node)
+            email_subject="${CRM_alert_timestamp} ${cluster_name}: Node '${CRM_alert_node}' is now '${CRM_alert_desc}'"
+            ;;
+        fencing)
+            email_subject="${CRM_alert_timestamp} ${cluster_name}: Fencing ${CRM_alert_desc}"
+            ;;
+        resource)
+            if [ ${CRM_alert_interval} = "0" ]; then
+                CRM_alert_interval=""
+            else
+                CRM_alert_interval=" (${CRM_alert_interval})"
+            fi
+
+            if [ ${CRM_alert_target_rc} = "0" ]; then
+                CRM_alert_target_rc=""
+            else
+                CRM_alert_target_rc=" (target: ${CRM_alert_target_rc})"
+            fi
+
+            case ${CRM_alert_desc} in
+                Cancelled) ;;
+                *)
+                    email_subject="${CRM_alert_timestamp} ${cluster_name}: Resource operation '${CRM_alert_task}${CRM_alert_interval}' for '${CRM_alert_rsc}' on '${CRM_alert_node}': ${CRM_alert_desc}${CRM_alert_target_rc}"
+                    ;;
+            esac
+            ;;
+        attribute)
+            #
+            email_subject="${CRM_alert_timestamp} ${cluster_name}: The '${CRM_alert_attribute_name}' attribute of the '${CRM_alert_node}' node was updated in '${CRM_alert_attribute_value}'"
+            ;;
+        *)
+            email_subject="${CRM_alert_timestamp} ${cluster_name}: Unhandled $CRM_alert_kind alert"
+            ;;
+
+    esac
+fi
+
+if [ ! -z "${email_subject}" ]; then
+    case $email_client in
+        # This sample script supports only sendmail for sending the email.
+	# Support for additional senders can easily be added by adding
+	# new cases here.
+        sendmail)
+            sendmail -t -r "${email_sender}" <<__EOF__
+From: ${email_sender}
+To: ${email_recipient}
+Return-Path: ${email_sender}
+Subject: ${email_subject}
+
+${email_body}
+__EOF__
+            ;;
+        *)
+            ;;
+    esac
+fi