diff --git a/playbooks/00_install_zabbix_agent.yml b/playbooks/00_install_zabbix_agent.yml
index 50cbdb6..2421c58 100644
--- a/playbooks/00_install_zabbix_agent.yml
+++ b/playbooks/00_install_zabbix_agent.yml
@@ -1,7 +1,7 @@
 - hosts: datacenter
   name: Install zabbix agent
   vars:
-    ZABBIX_SERVER_IP: "192.168.77.216"
+    ZABBIX_SERVER: "zabbix-server.lan"
   tasks:
 
     - name: Combine list1 and list2 into a merged_list var
@@ -85,7 +85,7 @@
       ansible.builtin.lineinfile:
         path: "{{ zabbix_agent_cfg }}"
         regexp: "^ServerActive=.*"
-        line: "ServerActive={{ ZABBIX_SERVER_IP }}"
+        line: "ServerActive={{ ZABBIX_SERVER }}"
       become: "{{ 'no' if inventory_hostname in groups['nas'] else 'yes' }}"
 
     - name: Reconfigure zabbix agent ListenPort
@@ -108,11 +108,18 @@
     - name: Reconfigure zabbix-agent2 hostname
       ansible.builtin.lineinfile:
         path: "{{ zabbix_agent_cfg }}"
-        regexp: "^UserParameter=.*"
         insertafter: '^# UserParameter='
         line: "UserParameter=system.temperature,vcgencmd measure_temp"
       become: "{{ 'no' if inventory_hostname in groups['nas'] else 'yes' }}"
 
+    - name: Reconfigure zabbix-agent2 config
+      ansible.builtin.lineinfile:
+        path: "{{ zabbix_agent_cfg }}"
+        insertafter: '^# UserParameter='
+        line: "UserParameter=system.certs,python3 /share/ZFS530_DATA/.qpkg/ZabbixAgent/cert_check2.py"
+      become: "{{ 'no' if inventory_hostname in groups['nas'] else 'yes' }}"
+      when: inventory_hostname not in groups['nas']
+
     - name: Reconfigure zabbix-agent2 hostname
       ansible.builtin.lineinfile:
         path: "{{ zabbix_agent_cfg }}"