diff --git a/tomcat-instance/tasks/main.yml b/tomcat-instance/tasks/main.yml
index 836443da..65070a02 100644
--- a/tomcat-instance/tasks/main.yml
+++ b/tomcat-instance/tasks/main.yml
@@ -4,6 +4,7 @@
   register: tomcat_instance_stat
 
 - include: tomcat.yml
+- include: nagios.yml
 - include: check.yml
 - include: user.yml
 - include: systemd.yml
diff --git a/tomcat-instance/tasks/nagios.yml b/tomcat-instance/tasks/nagios.yml
new file mode 100644
index 00000000..805e4e77
--- /dev/null
+++ b/tomcat-instance/tasks/nagios.yml
@@ -0,0 +1,20 @@
+---
+- name: Intall monitorings plugins 
+  apt:
+    name: monitoring-plugins
+    state: present
+
+- name: Mount /usr in rw
+  command: mount -o remount,rw /usr warn=no
+  changed_when: False
+
+- name: Create Nagios plugins dir
+  file:
+    path: '/usr/local/lib/nagios/plugins'
+    state: directory
+
+- name: Copy Tomcat instance check
+  template:
+    src: 'templates/check_tomcat_instance.sh.j2'
+    dest: '/usr/local/lib/nagios/plugins/check_tomcat_instance.sh'
+    mode: 0755
diff --git a/tomcat-instance/templates/check_tomcat_instance.sh.j2 b/tomcat-instance/templates/check_tomcat_instance.sh.j2
new file mode 100644
index 00000000..8ed63475
--- /dev/null
+++ b/tomcat-instance/templates/check_tomcat_instance.sh.j2
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+TOMCAT_ROOT='{{ tomcat_instance_root }}'
+alert=0
+
+for instance in $(ls $TOMCAT_ROOT); do
+        port=$(id -u $instance)
+        if [ -h ${TOMCAT_ROOT}/${instance}/.config/systemd/user/default.target.wants/tomcat.service ]; then
+                echo -n "$instance ($port) : "
+                /usr/lib/nagios/plugins/check_tcp -p $port
+                ret=$?
+                if [ $ret != 0 ]; then
+                        alert=$ret
+                fi
+        fi
+done
+
+exit $alert