From d0c3b67f168184061acb02cc736a2f473ddbabf5 Mon Sep 17 00:00:00 2001
From: Emilien Mantel <emilien.mantel@debianiste.org>
Date: Fri, 23 Sep 2016 11:40:35 +0200
Subject: [PATCH] [GALERA] Install and configuration OK => wsrep_ready ON

---
 README.md                                   |  2 +-
 tasks/install/main.yml                      |  3 ++-
 tasks/install/mariadb/default.yml           |  4 ++++
 tasks/main.yml                              |  9 ++++++++-
 templates/etc/mysql/conf.d/09-galera.cnf.j2 | 21 +++++++++++++++++++++
 tests/group_vars/mariadbgalera              |  2 ++
 tests/test.yml                              |  4 ++++
 7 files changed, 42 insertions(+), 3 deletions(-)
 create mode 100644 templates/etc/mysql/conf.d/09-galera.cnf.j2

diff --git a/README.md b/README.md
index 601a7d6..eadb43d 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Role Variables
 --------------
 
 - `mysql_origin`: origin of the package ("default" or "upstream")
-- `mysql_vendor`: "mysql", "mariadb" or "percona"
+- `mysql_vendor`: "mysql", "mariadb", "mariadb\_galera" (only with MariaDB upstream 10.1) or "percona"
 - `mysql_use_percona_repository`: use percona APT repository (automatic setted to true if you use "percona" as `mysql_vendor`).
 
 ### Configuration
diff --git a/tasks/install/main.yml b/tasks/install/main.yml
index 8e7e4db..3cb6da9 100644
--- a/tasks/install/main.yml
+++ b/tasks/install/main.yml
@@ -7,6 +7,7 @@
     (mysql_origin == 'default' and mysql_vendor == 'mysql') or
     (mysql_origin == 'default' and mysql_vendor == 'mariadb') or
     (mysql_origin == 'upstream' and mysql_vendor == 'mariadb') or
+    (mysql_origin == 'upstream' and mysql_vendor == 'mariadb_galera') or
     (mysql_origin ==  'upstream' and mysql_vendor == 'percona')
     )
 
@@ -24,7 +25,7 @@
 
 - name: INCLUDE | Install MariaDB from MariaDB repo
   include: 'mariadb/upstream.yml'
-  when: mysql_origin == 'upstream' and mysql_vendor == 'mariadb'
+  when: mysql_origin == 'upstream' and (mysql_vendor == 'mariadb' or mysql_vendor == 'mariadb_galera')
 
 - name: INCLUDE | Install Percona Server from Percona repo
   include: 'percona/upstream.yml'
diff --git a/tasks/install/mariadb/default.yml b/tasks/install/mariadb/default.yml
index 94208ca..c76defe 100644
--- a/tasks/install/mariadb/default.yml
+++ b/tasks/install/mariadb/default.yml
@@ -16,3 +16,7 @@
 - name: APT | Install MariaDB server
   apt: pkg=mariadb-server state=present
 
+- name: APT | Install Galera
+  apt: pkg=galera-3 state=present
+  when: mysql_vendor == 'mariadb_galera'
+
diff --git a/tasks/main.yml b/tasks/main.yml
index 20f5512..4243a54 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -16,9 +16,16 @@
   template: src=etc/mysql/conf.d/10-extra.cnf.j2 dest=/etc/mysql/conf.d/10-extra.cnf
   register: extraconfig
 
+- name: TEMPLATE | Deploy Galera configuration
+  template: src=etc/mysql/conf.d/09-galera.cnf.j2 dest=/etc/mysql/conf.d/09-galera.cnf
+  register: galeraconfig
+
 - name: SERVICE | Restart now (prevent bugs)
   service: name=mysql state=restarted
-  when: config.changed or extraconfig.changed
+  when: >
+    config.changed or
+    extraconfig.changed or
+    (galeraconfig is defined and galeraconfig.changed)
 
 - name: TEMPLATE Create .my.cnf for root
   template: src=root/my.cnf dest=/root/.my.cnf owner=root group=root mode=0600 backup=yes
diff --git a/templates/etc/mysql/conf.d/09-galera.cnf.j2 b/templates/etc/mysql/conf.d/09-galera.cnf.j2
new file mode 100644
index 0000000..b31e03d
--- /dev/null
+++ b/templates/etc/mysql/conf.d/09-galera.cnf.j2
@@ -0,0 +1,21 @@
+#
+# {{ ansible_managed }}
+#
+
+[mysqld]
+
+# Galera config
+
+wsrep_on=ON
+# TODO: wsrep_cluster_address=gcomm://cluster01,cluster02,cluster03
+wsrep_cluster_address=gcomm://127.0.0.1
+# TODO: https://mariadb.com/kb/en/mariadb/galera-cluster-system-variables/#wsrep_sst_method
+wsrep_sst_method=rsync
+# TODO: wsrep_cluster_name="my_wsrep_cluster"
+
+# Deps
+binlog_format=ROW
+default_storage_engine=InnoDB
+innodb_autoinc_lock_mode=2
+innodb_doublewrite=1
+query_cache_size=0
diff --git a/tests/group_vars/mariadbgalera b/tests/group_vars/mariadbgalera
index 9f6d935..6e21163 100644
--- a/tests/group_vars/mariadbgalera
+++ b/tests/group_vars/mariadbgalera
@@ -1 +1,3 @@
 mysql_vendor: 'mariadb_galera'
+mysql_use_percona_repository: false
+mariadb_version: '10.1'
diff --git a/tests/test.yml b/tests/test.yml
index 81677b6..81023c7 100644
--- a/tests/test.yml
+++ b/tests/test.yml
@@ -37,3 +37,7 @@
       delegate_to: "{{ his_master }}"
       when: c.changed
 
+- hosts: mariadbgalera
+  roles:
+    - ../../
+