From 40194e595cda5a4baf71ac4309cb696a5cef1902 Mon Sep 17 00:00:00 2001
From: Igor Ribeiro Barbosa Duarte <igor.duarte@scylladb.com>
Date: Wed, 19 Jun 2024 14:34:11 -0300
Subject: [PATCH] ansible-scylla-monitoring: Allow adding a custom dockerd
 configuration

Fixes https://github.com/scylladb/scylla-ansible-roles/issues/382
---
 ansible-scylla-monitoring/defaults/main.yml | 4 ++++
 ansible-scylla-monitoring/tasks/docker.yml  | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/ansible-scylla-monitoring/defaults/main.yml b/ansible-scylla-monitoring/defaults/main.yml
index f77678cc..0dca6e84 100644
--- a/ansible-scylla-monitoring/defaults/main.yml
+++ b/ansible-scylla-monitoring/defaults/main.yml
@@ -89,3 +89,7 @@ prometheus_url: 'https://github.com/prometheus/prometheus/releases/download/v2.3
 
 # Additional arguments to pass to the prometheus binary
 #prometheus_args: "--web.enable-admin-api --storage.tsdb.retention.size=50G"
+
+# Use this variable for setting any custom configuration allowed by dockerd (https://docs.docker.com/reference/cli/dockerd/#on-linux)
+# The content of this variable will be coppied to /etc/docker/daemon.json
+# docker_daemon_custom_config: { "bip": "172.17.0.1/24" }
diff --git a/ansible-scylla-monitoring/tasks/docker.yml b/ansible-scylla-monitoring/tasks/docker.yml
index 69004cef..e7938592 100644
--- a/ansible-scylla-monitoring/tasks/docker.yml
+++ b/ansible-scylla-monitoring/tasks/docker.yml
@@ -2,6 +2,13 @@
 - name: Populate service facts
   service_facts:
 
+- name: Add custom dockerd config
+  copy:
+    content: "{{ docker_daemon_custom_config }}"
+    dest: "/etc/docker/daemon.json"
+  become: true
+  when: docker_daemon_custom_config is defined
+
 - name: restart the docker daemon again
   service:
     name: docker