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#!/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
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