From eb798800c7395e14d3e687b28a2669e4eb9e0cc0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Soko=C5=82owski?= <jakub@status.im>
Date: Thu, 26 Mar 2020 14:13:23 +0100
Subject: [PATCH] set memory and cpu limits on the container
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Jakub Sokołowski <jakub@status.im>
---
 defaults/main.yml   | 6 ++++++
 tasks/container.yml | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/defaults/main.yml b/defaults/main.yml
index 160eaae..e947924 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -19,6 +19,12 @@ beacon_node_metrics_port: 9200
 # rpc / administrative
 beacon_node_rpc_port: 9900
 
+# resource limits, mem in MB
+beacon_node_cpu_limit: 0.60
+beacon_node_mem_limit: '{{ (ansible_memtotal_mb * 0.6) | int }}'
+beacon_node_cpu_reserve: 0.20
+beacon_node_mem_reserve: '{{ (ansible_memtotal_mb * 0.2) | int }}'
+
 # general container management
 compose_state: 'present'
 compose_recreate: 'smart'
diff --git a/tasks/container.yml b/tasks/container.yml
index 3b0be98..eac320e 100644
--- a/tasks/container.yml
+++ b/tasks/container.yml
@@ -15,6 +15,14 @@
           container_name: '{{ beacon_node_cont_name }}'
           image: '{{ beacon_node_cont_image }}'
           restart: 'always'
+          deploy:
+            resources:
+              limits:
+                cpus: '{{ beacon_node_cpu_limit | string }}'
+                memory: '{{ beacon_node_mem_limit }}M'
+              reservations:
+                cpus: '{{ beacon_node_cpu_reserve | string }}'
+                memory: '{{ beacon_node_mem_reserve }}M'
           ports:
             - '127.0.0.1:{{ beacon_node_rpc_port }}:{{ beacon_node_rpc_port }}/tcp'
             - '{{ beacon_node_metrics_port }}:{{ beacon_node_metrics_port }}/tcp'