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

C.6.2 Setup example for creating a highly reliable network of guest domains on KVM hosts (Tagged VLAN)

This section describes a configuration setup example for the following network configuration.

1) Setting up the system

1-1) Define the IP addresses and host names you use in the /etc/hosts file.

192.168.80.1    hosta    # virtual IP address of the KVM host
192.168.80.100  swhub1   # IP address of the primary monitoring destination's HUB
192.168.80.101  swhub2   # IP address of the secondary monitoring destination's HUB

• For RHEL8

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

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

    TYPE=Ethernet
    BOOTPROTO=none
    DEVICE=eth0
    ONBOOT=yes

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

    TYPE=Ethernet
    BOOTPROTO=none
    DEVICE=eth1
    ONBOOT=yes

• For RHEL9

  1-2) Set the following parameters to ethX (X is 0, 1) with the "nmcli connection modify" command.

  ipv4.method: "disabled"
  ipv6.method: "disabled"
  connection.autoconnect: "yes"

  After setting, verify that the following parameters are set for ethX with the "nmcli connection show" command. If the parameters are different, fix the settings seeing "3.2.2.1 Setup common to modes."

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

2) Creating a virtual interface

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m v -t eth0,eth1

3) Setting the virtual bridge

• For RHEL8

  Create /etc/sysconfig/network-scripts/ifcfg-br0 as a new interface setup file for the virtual bridge.

  • Contents of /etc/sysconfig/network-scripts/ifcfg-br0

    DEVICE=br0
    TYPE=Bridge
    BOOTPROTO=none
    ONBOOT=yes
    DELAY=0

• For RHEL9

  Create br0 with the following parameters by using the "nmcli connection add" command.

  connection.id: "br0"
  connection.interface-name: "br0"
  connection.type: "bridge"
  connection.autoconnect: "yes"
  ipv4.method: "disabled"
  ipv6.method: "disabled"

4) Setting a virtual interface

• For RHEL8

  Define an IP address or a prefix in the /etc/sysconfig/network-scripts/ifcfg-sha0 file.

  • Contents of /etc/sysconfig/network-scripts/ifcfg-sha0

    DEVICE=sha0
    IPADDR=192.168.80.1
    PREFIX=24
    BOOTPROTO=none
    ONBOOT=yes
    TYPE=Ethernet

• For RHEL9

  Set the following parameters to sha0 with the "nmcli connection modify" command.

  connection.slave-type: "bridge"
  connection.master: "br0"
  ipv4.method: "manual"
  ipv4.addresses: "192.168.80.1/24"

5) Adding a tagged VLAN interface

• For RHEL8

  To add the tagged VLAN interface sha0.10 on the virtual interface sha0, add the /etc/sysconfig/network-scripts/ifcfg-sha0.10 file. In addition, define the virtual bridge name (BRIDGE=br0) of the connection target.

  • Contents of /etc/sysconfig/network-scripts/ifcfg-sha0.10

    VLAN=yes
    TYPE=Vlan
    PHYSDEV=sha0
    VLAN_ID=10
    BOOTPROTO=none
    BRIDGE=br0

• For RHEL9

  Create sha0.10 with the following parameters by using the "nmcli connection add" command.

  connection.id: "sha0.10"
  connection.interface-name: "sha0.10"
  connection.type: "vlan"
  connection.autoconnect: "yes"
  connection.slave-type: "bridge"
  connection.master: "br0"
  vlan.parent: "sha0"
  vlan.id: "10"
  ipv4.method: "disabled"
  ipv6.method: "disabled"

6) Setting the network monitoring function

/opt/FJSVhanet/usr/sbin/hanetpathmon target -n sha0 -p 192.168.80.100,192.168.80.101

7) Setting /etc/NetworkManager/NetworkManager.conf

Describe the tagged VLAN interface, which is set in step 5), in /etc/NetworkManager/NetworkManager.conf.

• Contents of /etc/NetworkManager/NetworkManager.conf

  [main]
  ...
  ignore-carrier=sha0.10

Note

The setting of /etc/NetworkManager/NetworkManager.conf is required to control the processing of NetworkManager for tagged VLAN interfaces and manage the processing in GLS. Make sure to set /etc/NetworkManager/NetworkManager.conf.

8) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now