diff --git a/roles/grafana/defaults/main.yml b/roles/grafana/defaults/main.yml
index 237e298..415c662 100644
--- a/roles/grafana/defaults/main.yml
+++ b/roles/grafana/defaults/main.yml
@@ -87,3 +87,6 @@ grafana_auth: "{{ grafana_auth_base | combine(grafana_auth_extra, recursive=True
 # Plugins to install
 grafana_plugins:
   - alexanderzobnin-zabbix-app
+
+# Limit the amount of RAM grafana can eat (default is 50% of the total RAM)
+grafana_mem_limit: "{{ (ansible_memtotal_mb * 0.5) | int }}M"
diff --git a/roles/grafana/tasks/main.yml b/roles/grafana/tasks/main.yml
index ceb0853..2a5a463 100644
--- a/roles/grafana/tasks/main.yml
+++ b/roles/grafana/tasks/main.yml
@@ -14,6 +14,7 @@
       [Service]
       StartLimitInterval=0
       RestartSec=20
+      MemoryLimit={{ grafana_mem_limit }}
     dest: /etc/systemd/system/grafana-server.service.d/restart.conf
   register: grafana_unit
   tags: grafana