diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
index 790c108..f9e48e8 100644
--- a/roles/prometheus/tasks/main.yml
+++ b/roles/prometheus/tasks/main.yml
@@ -41,6 +41,7 @@
     - django.rules.yml
     - ups.rules.yml
     - postgres.rules.yml
+    - environmental.rules.yml
   notify: Restart Prometheus
 
 - name: Make Prometheus snmp-exporter listen on localhost only
diff --git a/roles/prometheus/templates/environmental.rules.yml.j2 b/roles/prometheus/templates/environmental.rules.yml.j2
new file mode 100644
index 0000000..f371329
--- /dev/null
+++ b/roles/prometheus/templates/environmental.rules.yml.j2
@@ -0,0 +1,52 @@
+---
+{{ ansible_managed | comment }}
+
+{% macro raw(string) -%}
+{{ "{{" }} {{ string }} {{ "}}" }}
+{%- endmacro %}
+
+groups:
+
+  - name: environmental.rules
+    rules:
+
+      - alert: EnvironmentalTemperature
+        expr: rPDU2SensorTempHumidityStatusTempC / 10 > 30
+        for: 10m
+        labels:
+          severity: warning
+        annotations:
+          summary: >-
+            Température environnementale à {{ raw('$value') }}°
+
+      - alert: EnvironmentalTemperature
+        expr: rPDU2SensorTempHumidityStatusTempC / 10 > 40
+        for: 10m
+        labels:
+          severity: critical
+        annotations:
+          summary: >-
+            Température environnementale à {{ raw('$value') }}° 
+
+
+      - alert: EnvironmentalTemperature
+        expr: xupsEnvRemoteTemp > 30
+        for: 10m
+        labels:
+          severity: warning
+        annotations:
+          summary: >-
+            Température environnementale à {{ raw('$value') }}°
+
+      - alert: EnvironmentalTemperature
+        expr: xupsEnvRemoteTemp > 40
+        for: 10m
+        labels:
+          severity: critical
+        annotations:
+          summary: >-
+            Température environnementale à {{ raw('$value') }}° 
+
+
+
+...
diff --git a/roles/prometheus_federate/tasks/main.yml b/roles/prometheus_federate/tasks/main.yml
index cc96e65..366f614 100644
--- a/roles/prometheus_federate/tasks/main.yml
+++ b/roles/prometheus_federate/tasks/main.yml
@@ -20,6 +20,13 @@
     - alert.rules.yml
   notify: Restart Prometheus
 
+- name: Define Prometheus retention time
+  lineinfile:
+    path: /etc/default/prometheus
+    regexp: '^ARGS=\"--log.level=debug\"'
+    line: "ARGS=\"--log.level=debug --storage.tsdb.retention.time=120d\""
+  notify: Restart Prometheus
+
 # We don't need to restart Prometheus when updating nodes
 - name: Configure Prometheus Federate devices
   copy: