Fix trigger in Zabbix 4.0 LTS, add support to systemd 219 (CentOS 7)

README.md

@@ -14,6 +14,7 @@ OS:
 
 * RHEL/CentOS/Oracle EL
 * Ubuntu 16.04/18.04
+* (systemd version 230+)
 
 Zabbix:
 
@@ -24,8 +25,8 @@ Installation
 ------------
 
 * Server
-  * Import template `Template_App_systemd_Services_v4.xml` file if you have Zabbix 4
-  * Import template `Template_App_systemd_Services_v5.xml` file if you have Zabbix 5
+  * Import template `Template_systemd_Services_v4.xml` file if you have Zabbix 4
+  * Import template `Template_systemd_Services_v5.xml` file if you have Zabbix 5
   * Link template to host
 * Agent
   * Place the following files inside `/etc/zabbix/`:
@@ -82,6 +83,13 @@ zabbix_agentd -t "systemd.service.status[sshd]"
 zabbix_agentd -t "systemd.service.restart[sshd]"
 ```
 
+The `status[SERVICENAME]` will return:
+
+* `[t|1]` if that service is running
+* `[t|0]` if that service is NOT running
+
+The `restart[SERVICENAME]` will return the most recent restart date.
+
 License
 -------
 

userparameter_systemd_services_old.conf

@@ -0,0 +1,5 @@
+UserParameter=systemd.service.discovery,/usr/local/bin/zbx_service_discovery.sh
+
+UserParameter=systemd.service.status[*],$(systemctl is-active -q $1) && echo 1 || echo 0
+
+UserParameter=systemd.service.restart[*],/usr/local/bin/zbx_service_restart_check.sh $1

usr/local/bin/zbx_service_restart_check.sh

@@ -8,6 +8,7 @@ uptime=$(date +%s -d "$(systemctl show --value -p ActiveEnterTimestamp sysinit.t
 if [[ $(( now - uptime)) -lt 180 ]]; then
         echo 0
 else
+        # note that the next line requires systemd version 230 because of "--value"
         service_start=$(systemctl show --value -p ActiveEnterTimestamp "$service")
         service_start_as_epoch=$(date -d "$service_start" +%s)
 

usr/local/bin/zbx_service_restart_check_old.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+service="$1"
+now=$(date +%s)
+
+uptime_value=$(systemctl show --value -p ActiveEnterTimestamp sysinit.target)
+
+# Don't alert if the server has just been restarted
+uptime=$(date +%s -d "$uptime_value")
+if [[ $(( now - uptime)) -lt 180 ]]; then
+        echo 0
+else
+        # note that the next line requires systemd version 230 because of "--value"
+        service_start=$(systemctl show --value -p ActiveEnterTimestamp "$service")
+        service_start_as_epoch=$(date -d "$service_start" +%s)
+
+        [[ $(( now - service_start_as_epoch )) -lt 180 ]] && echo 1 || echo 0
+fi