1 prerequisites for cluster setup, 1 configure network settings – Avago Technologies Syncro CS 9271-8i User Manual
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Syncro CS 9271-8i Solution User Guide
October 2013
Chapter 3: Creating the Cluster
Creating the Cluster in Red Hat Enterprise Linux (RHEL)
4.
If any of the validation tests fails or results in a warning, correct the problems that were uncovered and run the
test again.
3.4
Creating the Cluster in Red Hat Enterprise Linux (RHEL)
The following subsections describe how to enable cluster support, create a two-node cluster and configure NFS-
clustered resources for a Red Hat operating system.
Please note that the Syncro CS solution requires the Red Hat Enterprise Linux High Availability add-on in order for
dual-active HA functionality to operate properly and ensure data integrity through fencing. Product information
regarding the Red Hat Enterprise Linux High Availability add-on can be found
.
3.4.1
Prerequisites for Cluster Setup
Before you create a cluster, perform the following tasks so that all of the necessary modules and settings are pre-
configured. Additional details regarding Red Hat High Availability Add-On configuration and management can be
found at
.
3.4.1.1
Configure Network Settings
Perform the following steps to configure the network settings.
1.
Activate the network connections for node eth0 and node eth1 by selecting the following paths:
System > Preferences > Network Connections > System eth0 > Edit > Check Connect automatically
System > Preferences > Network Connections > System eth1 > Edit > Check Connect automatically
2.
NetworkManager is not supported on cluster nodes and should be removed or disabled. To disable, enter the
following commands at the command prompt for both nodes:
service NetworkManager stop
chkconfig NetworkManager off
3.
Perform the following steps to assign static IP addresses for both nodes (a total of four IP addresses).
a.
Select Setup > Network Configuration > Device Configuration.
b.
Use DNS: YOUR_IP_ADDRESS.
c.
Edit the /etc/hosts file to include the IP address and the hostname for both nodes and the client.
d.
Make sure you can ping hostname from both nodes.
The following are examples of the hosts file:
YOUR_IP_ADDRESS Node1
YOUR_IP_ADDRESS Node2
YOUR_IP_ADDRESS Client
4.
Configure the following iptables firewall settings to allow cluster services communication:
—
cman
(Cluster Manager): UDP ports 5405 and 5405
—
dlm
(Distributed Lock Manager): TCP port 21064
—
ricci
(part of Conga remote agent): TCP port 11111
—
modclustered
(part of Conga remote agent): TCP port 16851
—
luci
(Conga User Interface server): TCP port 8084