PRIMECLUSTER Global Link Services Configuration and AdministrationGuide 4.7Redundant Line Control Function

B.6.1 Example of the Single system

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.

[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)
192.168.81.2    gsa      # GS-1 Virtual IP

• For RHEL8

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

  • 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

• For RHEL9

  1-2) Set the IP address defined above with the "nmcli connection modify" command.

  • Configuration of eth0

    Set the following parameters with the "nmcli connection modify" command.

    ipv4.method: "manual"
    ipv4.addresses: "192.168.70.1/24"
    connection.autoconnect: "yes"

  • Configuration of eth1

    Set the following parameters with the "nmcli connection modify" command.

    ipv4.method: "manual"
    ipv4.addresses: "192.168.71.1/24"
    connection.autoconnect: "yes"

    After setting, verify that the following parameters are set for ethX with the nmcli connection show command.

    connection.type: "802-3-ethernet"
    connection.id: "ethX"
    connection.interface-name: "ethX"

2) Reflecting system setting

Run the following command and reload the connection profile. After reloading the profile, verify eth0 and eth1 are enabled using the ip command.

/usr/bin/nmcli connection reload
/usr/bin/nmcli connection up eth0
/usr/bin/nmcli connection up 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

6) Setting a virtual gateway

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

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.