B.1.5 Example of the Cluster system (Mutual 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 configuring the cluster system, refer to the Cluster system manual.
In this section, description of private LAN is omitted.
The dotted line indicates that the interface is inactive.
You need at least a remote host using Fast switching mode other than a node used for configuring a Cluster system. For details on configuring a remote host, refer to "B.1.1 Example of the Single system".

[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
192.168.70.2    host21  # HOST-B Physical IP
192.168.71.2    host22  # HOST-B Physical IP
192.168.80.2    hostb   # HOST-B Virtual IP
192.168.80.10   hosta1  # HOST-A/B Takeover virtual IP
192.168.80.20   hostb1  # HOST-A/B Takeover 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

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

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

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

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 t -i 192.168.80.1 -t eth0,eth1

5) Creating takeover virtual interfaces

/opt/FJSVhanet/usr/sbin/hanethvrsc create -n sha0 -i 192.168.80.10
/opt/FJSVhanet/usr/sbin/hanethvrsc create -n sha0 -i 192.168.80.20

For RHEL8 or later (not required for RHEL7)

6) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now

[HOST-B]

1) Setting up the system

1-1) Define IP addresses and hostnames in the /etc/hosts file. Defined content is same as HOST-A.

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=192.168.70.2
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.71.2
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

For RHEL8 or later

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

DEVICE=eth0
BOOTPROTO=none
IPADDR=192.168.70.2
PREFIX=24
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=none
IPADDR=192.168.71.2
PREFIX=24
ONBOOT=yes
TYPE=Ethernet

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 t -i 192.168.80.2 -t eth0,eth1

5) Creating takeover virtual interfaces

/opt/FJSVhanet/usr/sbin/hanethvrsc create -n sha0 -i 192.168.80.10
/opt/FJSVhanet/usr/sbin/hanethvrsc create -n sha0 -i 192.168.80.20

For RHEL8 or later (not required for RHEL7)

6) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now

[Configuration by RMS Wizard]

1) Configuration of userApplication: After configuring HOST-A and HOST-B, register the created takeover virtual interface as a Gls resource to create a cluster application. Use RMS Wizard to set up the cluster configuration. For details, see "PRIMECLUSTER Installation and Administration Guide".

2) Starting of userApplication: After completing the configuration, start the userApplication to activate the takeover virtual interface on the operation node.