B.8.4 Example of the Single system (GS Load Sharing)

This section describes an example configuration procedure of the network shown in the diagram below.

For the network configuration other than GLS, refer to "3.2.2 Network configuration".
For the GS configuration, refer to GS manual.
The dotted line indicates that the interface is inactive.

[HOST-A]

1) Setting up the system

1-1) Define IP addresses and hostnames in /etc/hosts file.

192.168.70.1    host11   # HOST Physical IP
192.168.71.1    host12   # HOST Physical IP
192.168.80.1    hosta    # HOST Virtual IP
192.168.80.254  virgw    # Virtual gateway
192.168.70.2    gs11     # GS-1 Physical IP (IP-1)
192.168.71.2    gs12     # GS-1 Physical IP (IP-2)
192.168.70.3    gs23     # GS-2 Physical IP (IP-3)
192.168.71.3    gs34     # GS-2 Physical IP (IP-4)
192.168.81.2    gsa      # GS1 Virtual IP
192.168.82.2    gsb      # GS2 Virtual IP

1-2) Configure /etc/sysconfig/network-scripts/ifcfg-ethX (X is 0,1) file as follows.

Note

The following setting example (/etc/sysconfig/network-scripts/ifcfg-ethX) is for RHEL5. For details, see "3.2.2 Network configuration".

Contents of /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
BROADCAST=192.168.70.255
IPADDR=192.168.70.1
NETMASK=255.255.255.0
NETWORK=192.168.70.0
ONBOOT=yes
TYPE=Ethernet

Contents of /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
BROADCAST=192.168.71.255
IPADDR=192.168.71.1
NETMASK=255.255.255.0
NETWORK=192.168.71.0
ONBOOT=yes
TYPE=Ethernet

1-3) When the system is RHEL, on the /etc/sysconfig/network file, define a statement which enables the network configuration.

NETWORKING=yes

1-4) Set the static route information of the virtual gateway for the remote host's virtual IP address in /etc/sysconfig/network-scripts/route-"interface name".

Contents of /etc/sysconfig/network-scripts/route-sha0

GATEWAY0=192.168.80.254  # Virtual gateway
NETMASK0=255.255.255.255 # Subnet mask
ADDRESS0=192.168.81.2    # GS-1 Virtual IP of the remote host
GATEWAY1=192.168.80.254  # Virtual gateway
NETMASK1=255.255.255.255 # Subnet mask
ADDRESS1=192.168.82.2    # GS-2 Virtual IP of the remote host

2) Reboot

Run the following command to reboot the system. After rebooting the system, verify eth0 and eth1 are active using ifconfig command.

/sbin/shutdown -r now

3) Setting a subnet mask

/opt/FJSVhanet/usr/sbin/hanetmask create -i 192.168.80.0 -m 255.255.255.0

4) Creating of virtual interface

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m c -i 192.168.80.1 -t eth0,eth1

5) Setting the Communication target monitoring function

/opt/FJSVhanet/usr/sbin/hanetobserv create -n GS1 -i 192.168.81.2 -t 192.168.70.2,192.168.71.2
/opt/FJSVhanet/usr/sbin/hanetobserv create -n GS2 -i 192.168.82.2 -t 192.168.70.3,192.168.71.3

6) Setting a virtual gateway

/opt/FJSVhanet/usr/sbin/hanetgw create -n sha0 -g 192.168.80.254

7) Activating of virtual interface

/opt/FJSVhanet/usr/sbin/strhanet

[GS]

Set the information for HOST-A's physical IP address and virtual IP address. For information on how to do this, see the GS manual.