From f827350f1d3dea4e910dff1a9698e5cc75fecb93 Mon Sep 17 00:00:00 2001
From: Maciej Szulik <maszulik@redhat.com>
Date: Thu, 23 Mar 2017 16:01:20 +0100
Subject: Increase rate limiting in journald.conf

---
 roles/openshift_master/tasks/main.yml | 22 ++++++++++++++++++++++
 roles/openshift_master/vars/main.yml  | 19 +++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/roles/openshift_master/tasks/main.yml b/roles/openshift_master/tasks/main.yml
index 121261e94..373ec0806 100644
--- a/roles/openshift_master/tasks/main.yml
+++ b/roles/openshift_master/tasks/main.yml
@@ -180,6 +180,28 @@
 - name: Install the systemd units
   include: systemd_units.yml
 
+- name: Checking for journald.conf
+  stat: path=/etc/systemd/journald.conf
+  register: journald_conf_file
+
+- name: Update journald setup
+  replace:
+    dest: /etc/systemd/journald.conf
+    regexp: '^(\#| )?{{ item.var }}=\s*.*?$'
+    replace: ' {{ item.var }}={{ item.val }}'
+    backup: yes
+  with_items: "{{ journald_vars_to_replace | default([]) }}"
+  when: journald_conf_file.stat.exists
+  register: journald_update
+
+# I need to restart journald immediatelly, otherwise it gets into way during
+# further steps in ansible
+- name: Restart journald
+  systemd:
+    name: systemd-journald
+    state: restarted
+  when: journald_update | changed
+
 - name: Install Master system container
   include: system_container.yml
   when:
diff --git a/roles/openshift_master/vars/main.yml b/roles/openshift_master/vars/main.yml
index cf39b73f6..0c681c764 100644
--- a/roles/openshift_master/vars/main.yml
+++ b/roles/openshift_master/vars/main.yml
@@ -20,3 +20,22 @@ openshift_master_valid_grant_methods:
 - deny
 
 openshift_master_is_scaleup_host: False
+
+# These defaults assume forcing journald persistence, fsync to disk once
+# a second, rate-limiting to 10,000 logs a second, no forwarding to
+# syslog or wall, using 8GB of disk space maximum, using 10MB journal
+# files, keeping only a days worth of logs per journal file, and
+# retaining journal files no longer than a month.
+journald_vars_to_replace:
+- { var: Storage, val: persistent }
+- { var: Compress, val: yes }
+- { var: SyncIntervalSec, val: 1s }
+- { var: RateLimitInterval, val: 1s }
+- { var: RateLimitBurst, val: 10000 }
+- { var: SystemMaxUse, val: 8G }
+- { var: SystemKeepFree, val: 20% }
+- { var: SystemMaxFileSize, val: 10M }
+- { var: MaxRetentionSec, val: 1month }
+- { var: MaxFileSec, val: 1day }
+- { var: ForwardToSyslog, val: no }
+- { var: ForwardToWall, val: no }
-- 
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