template.xml

<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export>
    <version>5.0</version>
    <date>2020-08-29T21:16:34Z</date>
    <groups>
        <group>
            <name>Templates/Applications</name>
        </group>
    </groups>
    <templates>
        <template>
            <template>Template Web SSL Certificate Monitor</template>
            <name>Template Web SSL Certificate Monitor</name>
            <groups>
                <group>
                    <name>Templates/Applications</name>
                </group>
            </groups>
            <applications>
                <application>
                    <name>Certificates</name>
                </application>
            </applications>
            <discovery_rules>
                <discovery_rule>
                    <name>Get URLs</name>
                    <key>get.urls</key>
                    <delay>1h</delay>
                    <item_prototypes>
                        <item_prototype>
                            <name>{#URL}</name>
                            <key>get.ssl[{#URL} {$EXPIRESWITHIN}]</key>
                            <delay>{$UPDATEINTERVAL}</delay>
                            <history>7d</history>
                            <trends>7d</trends>
                            <applications>
                                <application>
                                    <name>Certificates</name>
                                </application>
                            </applications>
                            <preprocessing>
                                <step>
                                    <type>CHECK_JSON_ERROR</type>
                                    <params>$.error</params>
                                </step>
                                <step>
                                    <type>JSONPATH</type>
                                    <params>$.expiresWithin</params>
                                </step>
                                <step>
                                    <type>REGEX</type>
                                    <params>^true
1</params>
                                    <error_handler>CUSTOM_VALUE</error_handler>
                                    <error_handler_params>0</error_handler_params>
                                </step>
                            </preprocessing>
                            <trigger_prototypes>
                                <trigger_prototype>
                                    <expression>{last()}=1</expression>
                                    <name>{#URL} expiration in {$EXPIRESWITHIN} day(s)</name>
                                    <priority>WARNING</priority>
                                    <description>Web SSL certificate is expiring soon.</description>
                                    <manual_close>YES</manual_close>
                                </trigger_prototype>
                            </trigger_prototypes>
                        </item_prototype>
                    </item_prototypes>
                </discovery_rule>
            </discovery_rules>
            <macros>
                <macro>
                    <macro>{$EXPIRESWITHIN}</macro>
                    <value>30</value>
                    <description>Days to check before certificate expires. default 30 days check.</description>
                </macro>
                <macro>
                    <macro>{$UPDATEINTERVAL}</macro>
                    <value>1h</value>
                    <description>How often to update the items</description>
                </macro>
            </macros>
        </template>
    </templates>
</zabbix_export>