B.10.3 Example of the Single system (GS Hot-standby)

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 the /etc/hosts file.

192.168.70.1    host11   # HOST-A Physical IP
192.168.71.1    host12   # HOST-A Physical IP
192.168.80.1    hosta    # HOST-A 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    gs13     # GS-1 Physical IP(IP-3)
192.168.71.3    gs14     # GS-1 Physical IP(IP-4)
192.168.81.2    gsa      # GS-1 Virtual IP

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

For RHEL7

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

DEVICE=eth0
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.70.1
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.71.1
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

For RHEL8 or later

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

TYPE=Ethernet
BOOTPROTO=none
IPADDR=192.168.70.1
PREFIX=24
DEVICE=eth0
ONBOOT=yes

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

TYPE=Ethernet
BOOTPROTO=none
IPADDR=192.168.71.1
PREFIX=24
DEVICE=eth1
ONBOOT=yes

1-3) Set the static route information of the virtual gateway for the remote host's virtual IP address in the /etc/sysconfig/network-scripts/route-"interface name" file.

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

2) Reflecting system setting

For RHEL7
Run the following command to reboot the system. After rebooting the system, verify eth0 and eth1 are active using the ip command.
```
/sbin/shutdown -r now
```

For RHEL8 or later

Run the following commands to reload the connection profiles. After reloading the profiles, verify eth0 and eth1 are active using the ip command.

/usr/bin/nmcli connection reload
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth0
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth1

3) Setting a subnet mask

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

4) Creating a 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 GS-1 -i 192.168.81.2 -t 192.168.70.2,192.168.71.2
/opt/FJSVhanet/usr/sbin/hanetobserv create -n GS-1 -i 192.168.81.2 -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

For RHEL7

7) Activating the virtual interface

/opt/FJSVhanet/usr/sbin/strhanet

For RHEL8 or later

7) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now

[GS-1]

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.