From 3e2ee30334a5166138a4fd262f7a56f57f2417ad Mon Sep 17 00:00:00 2001
From: Greg Karekinian <greg@karekinian.com>
Date: Wed, 21 May 2025 11:24:15 +0200
Subject: [PATCH] Configure maximum size and timespan of journald logs

Closes #506
---
 site-cookbooks/kosmos-base/recipes/default.rb   |  1 +
 .../kosmos-base/recipes/journald_conf.rb        | 17 +++++++++++++++++
 .../templates/default/journald.conf.erb         |  6 ++++++
 3 files changed, 24 insertions(+)
 create mode 100644 site-cookbooks/kosmos-base/recipes/journald_conf.rb
 create mode 100644 site-cookbooks/kosmos-base/templates/default/journald.conf.erb

diff --git a/site-cookbooks/kosmos-base/recipes/default.rb b/site-cookbooks/kosmos-base/recipes/default.rb
index d5df463..0033a24 100644
--- a/site-cookbooks/kosmos-base/recipes/default.rb
+++ b/site-cookbooks/kosmos-base/recipes/default.rb
@@ -27,6 +27,7 @@
 include_recipe 'apt'
 include_recipe 'timezone_iii'
 include_recipe 'ntp'
+include_recipe 'kosmos-base::journald_conf'
 include_recipe 'kosmos-base::systemd_emails'
 
 node.override["apt"]["unattended_upgrades"]["allowed_origins"] = [
diff --git a/site-cookbooks/kosmos-base/recipes/journald_conf.rb b/site-cookbooks/kosmos-base/recipes/journald_conf.rb
new file mode 100644
index 0000000..56ad111
--- /dev/null
+++ b/site-cookbooks/kosmos-base/recipes/journald_conf.rb
@@ -0,0 +1,17 @@
+#
+# Cookbook Name:: kosmos-base
+# Recipe:: journald_conf
+#
+
+template "/etc/systemd/journald.conf" do
+  source "journald.conf.erb"
+  variables system_max_use: "256M",
+            max_retention_sec: "7d"
+  # Restarting journald is required
+  notifies :run, "execute[systemctl restart systemd-journald.service]", :delayed
+end
+
+execute "systemctl restart systemd-journald.service" do
+  command "systemctl restart systemd-journald.service"
+  action :nothing
+end
diff --git a/site-cookbooks/kosmos-base/templates/default/journald.conf.erb b/site-cookbooks/kosmos-base/templates/default/journald.conf.erb
new file mode 100644
index 0000000..d39e2d2
--- /dev/null
+++ b/site-cookbooks/kosmos-base/templates/default/journald.conf.erb
@@ -0,0 +1,6 @@
+[Journal]
+# Set the maximum size of the journal logs in bytes
+SystemMaxUse=<%= @system_max_use %>
+
+# Set the number of days after which logs will be deleted
+MaxRetentionSec=<%= @max_retention_sec %>