[GALERA] Install and configuration: first and other nodes

defaults/main.yml

@@ -135,3 +135,8 @@ mariadb_repository: "http://ftp.igh.cnrs.fr/pub/mariadb/repo/{{ mariadb_version
 # -------------------------------------
 percona_version: '5.6'
 percona_repository: 'http://repo.percona.com/apt'
+
+
+# Galera
+mysql_galera_bootstrap: false
+mariadb_galera_members: []

tasks/galera/bootstrap.yml

@@ -0,0 +1,23 @@
+---
+- set_fact:
+    booboo: /var/lib/mysql/.ansible_galera_boostrap
+
+- name: STAT | Bootstrap mark
+  stat: path={{ booboo }}
+  register: s
+
+- block:
+
+    - name: COMMAND | Stop MariaDB
+      service: name=mysql state=stopped
+
+    - name: COMMAND | Bootstrap first node
+      command: galera_new_cluster
+      register: bootstrap_run
+
+  when: not s.stat.exists
+
+- name: COMMAND | Create Bootstrap mark
+  command: "touch {{ booboo }}"
+  args:
+    creates: "{{ booboo }}"

tasks/galera/main.yml

@@ -0,0 +1,19 @@
+---
+
+- 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: INCLUDE | Bootstrap first node
+  include: 'bootstrap.yml'
+  when: inventory_hostname == mysql_galera_primary_node
+
+- name: INCLUDE | Configure other nodes
+  include: 'nodes.yml'
+  when: inventory_hostname != mysql_galera_primary_node
+
+- name: SERVICE | Restart MariaDB if needed
+  service: name=mysql state=restarted
+  when: >
+    (galeraconfig or (p is defined and p.changed)) and
+    (bootstrap_run is not defined)

tasks/galera/nodes.yml

@@ -0,0 +1,29 @@
+---
+
+- name: COMMAND | GET debian.cnf from primary node
+  command: cat /etc/mysql/debian.cnf
+  register: debiancnf
+  delegate_to: '{{ mysql_galera_primary_node }}'
+
+- name: COMMAND | Get current debian.cnf
+  command: cat /etc/mysql/debian.cnf
+  register: ondc
+
+- block:
+
+  - name: SERVICE | Stop MariaDB
+    service: name=mysql state=stopped
+
+  - name: COPY | Paste primary node's debian.cnf
+    copy: >
+      content={{ debiancnf.stdout }}
+      dest=/etc/mysql/debian.cnf
+      mode=0600
+      owner=root
+      group=root
+    register: paste
+
+  - name: SERVICE | Start MariaDB
+    service: name=mysql state=started
+
+  when: debiancnf.stdout != ondc.stdout

tasks/main.yml

@@ -16,20 +16,19 @@
   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 or
-    (galeraconfig is defined and galeraconfig.changed)
+    extraconfig.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
 
+- name: INCLUDE | Galera
+  include: galera/main.yml
+  when: mysql_vendor == 'mariadb_galera'
+
 - name: INCLUDE | Replication
   include: replication/main.yml
   when: mysql_replication_master or mysql_replication_slave
@@ -49,4 +48,3 @@
     host="{{ item.host | default('localhost') }}"
     state=present
   with_items: "{{ mysql_users }}"
-

templates/etc/mysql/conf.d/09-galera.cnf.j2

@@ -4,16 +4,26 @@
 
 [mysqld]
 
+# --------------------
 # Galera config
+# --------------------
 
+# Global
 wsrep_on=ON
-# TODO: wsrep_cluster_address=gcomm://cluster01,cluster02,cluster03
-wsrep_cluster_address=gcomm://127.0.0.1
+wsrep_provider=/usr/lib/galera/libgalera_smm.so
+wsrep_cluster_address=gcomm://{{ mariadb_galera_members | join(",") }}
 # 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"
 
+# Node Configuration
+wsrep_node_address="{{ mysql_wsrep_node_address | default(ansible_eth0.ipv4.address) }}"
+wsrep_node_name="{{ mysql_wsrep_node_name | default(ansible_fqdn) }}"
+
+
+# --------------------
 # Deps
+# --------------------
 binlog_format=ROW
 default_storage_engine=InnoDB
 innodb_autoinc_lock_mode=2

tests/gen.pl

@@ -24,7 +24,8 @@ my @a = (
 
 my $start_ip = '192.168.200.10';
 my $iip = ip2long($start_ip);
-my $tmp_ip = 0;
+
+my @galera = ();
 
 foreach my $n (@a)
 {
@@ -40,27 +41,40 @@ foreach my $n (@a)
 	if($data[-1] eq 'slave')
 	{
 		open(FILE, '>', "host_vars/$n");
-		printf FILE (qq/his_master: '%s'\n/, $tmp_ip);
+		printf FILE (qq/his_master: '%s'\n/, long2ip($iip));
 		close(FILE);
 	}
 
-	if($data[-1] =~ /^\d$/ && $data[-2] eq 'mariadbgalera')
+#	if($data[-1] =~ /^\d$/ && $data[-2] eq 'mariadbgalera')
+#	{
+#		open(FILE, '>', "host_vars/$n");
+#		printf FILE (qq/galera_id: '%s'\n/, $data[-1]);
+#		close(FILE);
+#	}
+
+	if($data[-2] eq 'mariadbgalera')
 	{
-		open(FILE, '>', "host_vars/$n");
-		printf FILE (qq/galera_id: '%s'\n/, $data[-1]);
-		close(FILE);
+		push(@galera, long2ip($iip));
+		goto SKIP;
 	}
 
 	open(FILE, '>', "group_vars/" . $data[2]);
-	my $mv = $data[-2];
-	$mv = 'mariadb_galera' if($mv eq 'mariadbgalera');
-	printf FILE (qq/mysql_vendor: '%s'\n/, $mv);
+	printf FILE (qq/mysql_vendor: '%s'\n/, $data[2]);
 	close(FILE);
 
-	$tmp_ip = long2ip($iip);
+	SKIP:
 	$iip++;
 }
 
+open(FILE, '>', 'group_vars/mariadbgalera');
+say FILE qq/mysql_vendor: 'mariadb_galera'/;
+say FILE qq/mariadb_galera_members:/;
+foreach(@galera)
+{
+	say FILE qq/  - '$_'/;
+}
+close(FILE);
+
 sub ip2long {
 	return unpack("l*", pack("l*", unpack("N*", inet_aton(shift))));
 }

tests/group_vars/all

@@ -1,2 +1,2 @@
 mysql_use_percona_repository: true
-mysql_bind_address: '0.0.0.0'
+mysql_bind_address: '{{ ansible_eth1.ipv4.address }}'

tests/group_vars/mariadbgalera

@@ -1,3 +1,5 @@
 mysql_vendor: 'mariadb_galera'
-mysql_use_percona_repository: false
-mariadb_version: '10.1'
+mariadb_galera_members:
+  - '192.168.200.18'
+  - '192.168.200.19'
+  - '192.168.200.20'

tests/host_vars/jessie-default-mariadb-slave

@@ -1 +1 @@
-his_master: '192.168.200.16'
+his_master: '192.168.200.17'

tests/host_vars/jessie-default-mysql-slave

@@ -1 +1 @@
-his_master: '192.168.200.10'
+his_master: '192.168.200.11'

tests/host_vars/jessie-upstream-mariadb-slave

@@ -1 +1 @@
-his_master: '192.168.200.12'
+his_master: '192.168.200.13'

tests/host_vars/jessie-upstream-mariadbgalera-1

@@ -1 +0,0 @@
-galera_id: '1'

tests/host_vars/jessie-upstream-mariadbgalera-2

@@ -1 +0,0 @@
-galera_id: '2'

tests/host_vars/jessie-upstream-mariadbgalera-3

@@ -1 +0,0 @@
-galera_id: '3'

tests/host_vars/jessie-upstream-percona-slave

@@ -1 +1 @@
-his_master: '192.168.200.14'
+his_master: '192.168.200.15'

tests/test.yml

@@ -38,6 +38,11 @@
       when: c.changed
 
 - hosts: mariadbgalera
+  vars:
+    mysql_galera_primary_node: 'jessie-upstream-mariadbgalera-1'
+    mysql_wsrep_node_address: "{{ ansible_eth1.ipv4.address }}"
+    mysql_use_percona_repository: false
+    mariadb_version: '10.1'
   roles:
     - ../../