Configure maximum size and timespan of journald logs

Closes #506

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"] = [

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

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 %>