Compute node

Compute node

Configure network interfaces

  1. Configure the first interface as the management interface:

    IP address: 10.0.0.31

    Network mask: 255.255.255.0 (or /24)

    Default gateway: 10.0.0.1

    Note

    Additional compute nodes should use 10.0.0.32, 10.0.0.33, and so on.

  2. The provider interface uses a special configuration without an IP address assigned to it. Configure the second interface as the provider interface:

    Replace INTERFACE_NAME with the actual interface name. For example, eth1 or ens224.

    For Ubuntu:

    • Edit the /etc/network/interfaces file to contain the following:

      # The provider network interface
      auto INTERFACE_NAME
      iface  INTERFACE_NAME inet manual
      up ip link set dev $IFACE up
      down ip link set dev $IFACE down
      

    For RHEL or CentOS:

    • Edit the /etc/sysconfig/network-scripts/ifcfg-INTERFACE_NAME file to contain the following:

      Do not change the HWADDR and UUID keys.

      DEVICE=INTERFACE_NAME
      TYPE=Ethernet
      ONBOOT="yes"
      BOOTPROTO="none"
      

    For SUSE:

    • Edit the /etc/sysconfig/network/ifcfg-INTERFACE_NAME file to contain the following:

      STARTMODE='auto'
      BOOTPROTO='static'
      
  3. Reboot the system to activate the changes.

Configure name resolution

  1. Set the hostname of the node to compute1.

  2. Edit the /etc/hosts file to contain the following:

    # controller
    10.0.0.11       controller
    
    # compute1
    10.0.0.31       compute1
    
    # block1
    10.0.0.41       block1
    
    # object1
    10.0.0.51       object1
    
    # object2
    10.0.0.52       object2
    

    Warning

    Some distributions add an extraneous entry in the /etc/hosts file that resolves the actual hostname to another loopback IP address such as 127.0.1.1. You must comment out or remove this entry to prevent name resolution problems. Do not remove the 127.0.0.1 entry.

    Note

    This guide includes host entries for optional services in order to reduce complexity should you choose to deploy them.

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