kafecho · March 6, 2013 13:48 · Mar 6, 2013
diff --git a/Ansible playbook for corosync b/Ansible playbook for corosync
@@ -0,0 +1,44 @@
+# This playbook installs and configure corosync and pacemaker on a set of nodes part of a given group.
+---
+
+# See the file /etc/ansible/hosts where the group is actually defined. There might be a way to define groups in a file 'closer' to this playbook.
+- hosts: clusternodes
+  vars:
+    mcastport : 5405
+  tasks:
+
+  # It would be better to use Ansible to change the IP tables config to allow corosync/pacemaker on the nodes part of the cluster.
+  - name: ensure iptables is stopped and is not running at boot time.
+    action: service name=iptables state=stopped enabled=no
+
+  - name: ensure python-selinux is installed on all nodes.
+    action: yum name=libselinux-python state=installed  
+
+  - name: set SELinux to permissive
+    action: selinux policy=targeted state=permissive
+
+  - name: ensure SELinux is turned off
+    action: command /usr/sbin/setenforce 0
+
+  - name: ensure corosync is installed.
+    action: yum name=corosync state=installed
+
+  - name: write the corosync config files
+    action: template src=corosync.conf dest=/etc/corosync/corosync.conf
+
+  - name: add the pcmk file in the folder service.d for corosync configuration
+    action: copy src=pcmk dest=/etc/corosync/service.d/pcmk
+
+  - name: ensure Pacemaker is installed.
+    action: yum name=pacemaker state=installed
+
+  - name: ensure corosync is running (and automatically at boot time)
+    action: service name=corosync state=started enabled=yes
+
+  - name: ensure pacemaker is running automatically at boot time
+    action: command /sbin/chkconfig pacemaker on
+
+  - name: ensure Pacemaker is running (and also enabled to start at boot time). For some reason, Pacemaker will fail to start when the steps below are done synchronously.
+    action: service name=pacemaker state=started enabled=yes
+    async: 60
+    poll:  5
diff --git a/Ansible template for Corosync b/Ansible template for Corosync
@@ -0,0 +1,33 @@
+# Please read the corosync.conf.5 manual page
+compatibility: whitetank
+
+totem {
+  version: 2
+	secauth: off
+	interface {
+		{% for host in hostvars %}
+  		member {
+			memberaddr: {{ hostvars[host]['ansible_eth1']['ipv4']['address']}}
+		}
+		{% endfor %}
+		ringnumber: 0 
+		bindnetaddr: {{ bindnetaddr }}
+		mcastport: {{ mcastport }}
+		ttl: 1
+	}
+	transport: udpu
+}
+
+logging {
+	fileline: off
+	to_logfile: yes
+	to_syslog: yes
+	debug: on
+	logfile: /var/log/corosync.log
+	debug: off
+	timestamp: on
+	logger_subsys {
+		subsys: AMF
+		debug: off
+	}
+}
diff --git a/Configure Corosync to use Pacemaker b/Configure Corosync to use Pacemaker
@@ -0,0 +1,4 @@
+service{
+  name:	pacemaker
+	ver:	1
+}