Service Description
ricci Cluster management daemon (Remote cluster and storage management)
Default port 11111
Propagates updated cluster configuration from (and to) cluster nodes
luci Luci is a web-based HA administration application
Luci can handle most common cluster tasks - avoiding the need for manual configuration changes
- Configure whole clusters
- add, remove, reboot and configure nodes
- Service management
- Resource management
- Failover Domains
- Global Fencing
cman Red Hat Cluster Manager
Performs cluster management in HA add-on
Runs on each cluster node and handles communication between nodes in the cluster
rgmanager Cluster resource group manager - it is layered on to of magma (API)
Provides cold failover of resource collected into groups.
modcluster
clvmd Cluster LVM Daemon
All clusters must have this running on them to provide LVM metadata updates 



yum install rgmanager lvm2-cluster gfs2-utils -y
Note that installing only the rgmanager will pull in all necessary dependencies to create an HA cluster from the HighAvailability channel. The lvm2-cluster and gfs2-utils packages are part of ResilientStorage channel and may not be needed by your site.
On both nodes install: 
yum groupinstall 'High Availability' 'Resilient Storage' -y
On main web management server 
yum install luci -y ; chkconfig luci on
On both nodes: 
# service ricci start
Starting system message bus:                               [  OK  ]
Starting oddjobd:                                          [  OK  ]
generating SSL certificates...  done
Generating NSS database...  done
Starting ricci:                                            [  OK  ]

# passwd ricci
Changing password for user ricci.
New password:
Retype new password:
passwd: all authentication tokens updated successfully.
On main node: 
# service luci start
Adding following auto-detected host IDs (IP addresses/domain names), corresponding to `mysql-cluster-1' address, to the configuration of self-managed certificate `/var/lib/luci/etc/cacert.config' (you can change them by editing `/var/lib/luci/etc/cacert.config', removing the generated certificate `/var/lib/luci/certs/host.pem' and restarting luci):
        (none suitable found, you can still do it manually as mentioned above)

Generating a 2048 bit RSA private key
writing new private key to '/var/lib/luci/certs/host.pem'
Start luci...                                              [  OK  ]
Point your web browser to https://mysql-cluster-1:8084 (or equivalent) to access luci
Add the following IP table rules to your servers: 
iptables -I INPUT 1 -p tcp --dport 5404 -j ACCEPT
iptables -I INPUT 1 -p udp --dport 5404 -j ACCEPT
iptables -I INPUT 1 -p tcp --dport 5405  -j ACCEPT
iptables -I INPUT 1 -p udp --dport 5405  -j ACCEPT
iptables -I INPUT 1 -p tcp --dport 11111 -j ACCEPT
iptables -I INPUT 1 -p tcp --dport 21064  -j ACCEPT
iptables -I INPUT 1 -p tcp --dport 16851  -j ACCEPT
iptables -I INPUT 1 -p tcp --dport 8084  -j ACCEPT
iptables -I INPUT 1 -p tcp --dport 443  -j ACCEPT

Port Protocol Description
5404, 5405
11111
21064
16851
8084
443 tcp

In your browser go to the following address and log in using the servers root account: 

https://x.x.x.x:8084
Once you have located the 'Create New Cluster' section, enter the parameters for the cluster you are creating
(Password field is the ricci password)
Once all is complete click 'Create Cluster' 
# clustat
Cluster Status for mysql Cluster @ Wed May 11 06:28:39 2016
Member Status: Quorate

 Member Name                                                ID   Status
 ------ ----                                                ---- ------
 mysql-cluster-1                                                1 Online, Local
 mysql-cluster-2                                                2 Offline

Configuring Fencing

Now we must configure the fencing method