4.7 Configuring the Network for Oracle Exalytics In-Memory Machine

This section describes how to use the exalytics_configure_network.sh script, to configure the network for Oracle Exalytics In-Memory Machine.

It contains the following topics:

Parent topic: Adding Oracle Exalytics In-Memory Machine to Your Network

4.7.1 Overview

The exalytics_configure_network.sh script is used to configure the Oracle Exalytics In-Memory Machine after the initial operating system image is installed.

This script verifies the following:

  • When started, the script verifies that the user is root. Users other than root are not allowed to run the script.

  • It verifies that the Oracle Exalytics In-Memory Machine is installed with a 10 GbE card. If the card is not installed or the drivers are not configured, the script stops its execution.

  • It verifies connectivity to all gateways and hostnames configured in the session.

You can run the script to configure the following multiple interfaces:

Note:

You cannot configure Fiber Channel using the exalytics_configure_network.sh script.

Parent topic: Configuring the Network for Oracle Exalytics In-Memory Machine

4.7.1.1 InfiniBand

The exalytics_configure_network.sh script optionally configures the InfiniBand network interface by bonding two InfiniBand interfaces. This interface is for IPoIB communication (bond0) intended for Oracle Exalytics In-Memory Machine's connectivity with Exalogic machine or Oracle Exadata Database Machine. You must specify an IP address and netmask for the script. A gateway address for this InfiniBand interface is not necessary.

When you configure InfiniBand using the exalytics_configure_network.sh script, the following files are updated:

/etc/sysconfig/network-scripts/ifcfg-ib*
/etc/sysconfig/network-scripts/ifcfg-bond0
/etc/modprobe.conf

Note:

The script keeps a copy of these files in the /tmp/exalytics.save/ directory and creates a flat backup for the files that may be modified.

Parent topic: Overview

4.7.1.2 10 GbE Interfaces

The exalytics_configure_network.sh script verifies whether bonding is required on the 10 GbE interfaces. If you opt for bonding, the script configures the bonded interfaces using bond1 on all 10 GbE interfaces. For bond1 interface, the script requires an IP address, netmask, and gateway address.

If you do not opt for a bonded interface, the script verifies whether you want to configure each interface separately. You are prompted to enter an IP address, netmask, and gateway address for each individual interface configured.

When you configure 10 GbE interfaces using the exalytics_configure_network.sh script, the following files are updated:

/etc/sysconfig/network-scripts/ifcfg-eth*
/etc/sysconfig/network-scripts/ifcfg-bond1
/etc/modprobe.conf

Note:

The script keeps a copy of the interface files in the /tmp/exalytics.save/ directory and creates a flat backup for the files that may be modified.

Parent topic: Overview

4.7.1.3 1 GbE Interfaces

The exalytics_configure_network.sh script verifies whether bonding is required on the 1 GbE interfaces. If you opt for bonding, the script configures the bonded interfaces using bond2 on all 1 GbE interfaces. For bond2 interface, the script requires an IP address, netmask, and gateway address.

If you do not opt for a bonded interface, the script verifies whether you want to configure each interface separately. You are prompted to enter an IP address, netmask, and gateway address for each individual interface configured.

When you configure 1 GbE interfaces using the exalytics_configure_network.sh script, the following files are updated:

/etc/sysconfig/network-scripts/ifcfg-eth*
/etc/sysconfig/network-scripts/ifcfg-bond2
/etc/modprobe.conf

Note:

The script keeps a copy of the interface files in the /tmp/exalytics.save/ directory and creates a flat backup for the files that may be modified.

Parent topic: Overview

4.7.1.4 Host Name

The exalytics_configure_network.sh script optionally configures a host name and a domain name for your Oracle Exalytics In-Memory Machine. You cannot configure a domain name without configuring a host name.

The configured host name maps to an IP address in the following sequence:

  • The Last IP configured in this session.

  • If no IP configured, it will take the IP from first active interface from: bond1, bond2, …, eth5.

  • If no IP is found, then no IP is configured in the /etc/hosts file.

When you configure host name using the exalytics_configure_network.sh script, the following files are updated:

/etc/sysconfig/network
/etc/hosts

Note:

The script keeps a copy of the interface files in the /tmp/exalytics.save/ directory and creates a flat backup for the files that may be modified.

Parent topic: Overview

4.7.1.5 Time

The exalytics_configure_network.sh script optionally configures the time zone using the tzselect script. This script guides you to select a continent, country, and city using numbered menu selection. The script verifies whether a network time server should be configured. If you choose to configure a server, the script prompts you to enter the server name and other required information.

If you do not opt for time server configuration, the script prompts you to set time and date.

For network time server configuration, the script modifies the /etc/ntp.conf file, and it starts the ntpd daemon and adds it to start at boot.

For time zone selection, the script creates a new soft link to /etc/localtime.

Note:

The script keeps a copy of the interface files in the /tmp/exalytics.save/ directory and creates a flat backup for the files that may be modified.

Parent topic: Overview

4.7.1.6 Domain Name Server (DNS)

The exalytics_configure_network.sh script optionally configures one or more domain name servers that you specify.

When you configure domain name servers using the exalytics_configure_network.sh script, the following file is updated:

/etc/resolv.conf

Note:

The script keeps a copy of the interface files in the /tmp/exalytics.save/ directory and creates a flat backup for the files that may be modified.

Parent topic: Overview

4.7.2 State of the Oracle Exalytics In-Memory Machine Before Running the Script

Before running the exalytics_configure_network.sh script, your Oracle Exalytics In-Memory Machine is not configured with the following:

  • 10 GbE and 1 GbE network interfaces

  • Optional InfiniBand network interfaces

  • Host name, domain name, and time zone

  • Time server and domain name servers

Parent topic: Configuring the Network for Oracle Exalytics In-Memory Machine

4.7.3 Running the exalytics_configure_network.sh Script

Run the exalytics_configure_network.sh script, and choose your configuration option, as described in Table 4-5.

Table 4-5 exalytics_configure_network.sh Properties

Question/Parameter Description

Do you want to configure InfiniBand for Exadata connection? [y/n) [n]

Enter y if you want to configure InfiniBand for connecting Oracle Exalytics In-Memory Machine to Oracle Exadata Database Machine.

Enter bond0 IP address

Enter a bond0 IP address. For example, 192.168.21.12.

Use xx.xxx.xx.xx for bond0 ip address (y/n) [y]

Verify the bond0 IP address you specified, and enter y.

Enter bond0 netmask address

Enter a bond0 netmask address. For example, 255.255.255.0.

Use xx.xxx.xxx.xx for bond0 netmask (y/n) [y]

Verify the bond0 netmask address you specified, and enter y.

Do you want to configure 10G network(y/n) [n]

Depending on your configuration option, enter y or n.

Configure bonding on eth0 eth1? (y/n) [n]

Depending on your configuration option, enter y or n.

Configure eth0 Interface? (y/n) [n]

Depending on your configuration option, enter y or n.

Enter eth0 IP address

Enter an eth0 IP address. For example, 10.10.10.10.

Use xx.xxx.xx.xx for eth0 ip address (y/n) [y]

Verify the eth0 IP address you specified, and enter y.

Enter etho0 netmask address

Enter a netmask for the eth0 interface. For example, 255.255.248.0.

Use xx.xxx.xxx.xx for eth0 netmask (y/n) [y]

Verify the eth0 netmask you specified, and enter y.

Enter eth0 gateway address

Enter the eth0 gateway address. For example, 10.20.30.40.

Use xx.xxx.xxx.xx for eth0 gateway (y/n) [y]

Verify the eth0 gateway address you specified, and enter y.

Configure eth1 Interface? (y/n) [n]

Depending on your configuration option, enter y or n.

Disable eth1

Depending on your configuration option, enter y or n.

Do you want to configure 1G network (y/n) [y]

Depending on your configuration option, enter y or n.

Configure bonding on eth2 eth3 eth4 eth5? (y/n) [n]: n

Depending on your configuration option, enter y or n.

Configure eth2 Interface? (y/n) [n]: y

Depending on your configuration option, enter y or n.

Enter eth2 IP address

Enter an eth2 IP address. For example, 10.10.10.11.

Use xx.x.x.xx for eth2 ip address (y/n) [y]: y

Verify the eth2 IP address you specified, and enter y.

Enter eth2 netmask address

Enter a netmask for the eth2 interface. For example, 255.255.255.254.

Use xxx.xxx.xxx.xxx for eth2 netmask (y/n) [y]: y

Verify the eth2 netmask address you specified and then enter y.

Enter eth2 gateway address

Enter an eth2 gateway address. For example, 10.1.1.1.

Use xx.x.x.x for eth2 gateway (y/n) [y]: y

Verify the eth2 gateway address you specified, and enter y.

Configure eth3 Interface? (y/n) [n]: n

Depending on your configuration option, enter y or n.

Disable eth3

Depending on your configuration option, enter y or n.

Configure eth4 Interface? (y/n) [n]: n

Depending on your configuration option, enter y or n.

Disable eth4

Depending on your configuration option, enter y or n.

Configure eth5 Interface? (y/n) [n]: n

Depending on your configuration option, enter y or n.

Disable eth5

Depending on your configuration option, enter y or n.

Do you want to configure hostname (y/n) [n]: y

Depending on your configuration option, enter y or n.

Enter hostname

Enter a hostname for the machine. For example, myhost.

Use xxxxx for host_name (y/n) [y]: y

Verify the hostname you specified, and enter y.

Enter domainname:mydomain

Enter a domain name. For example, mydomain.

Use xxxxx in for domainname (y/n) [y]: y

Verify the domain name you specified, and enter y.

Do you want to configure timezone (y/n) [y]: y

Depending on your configuration option, enter y or n.

Please identify a location so that time zone rules can be set correctly.

Please select a continent or ocean.

Enter your location. For example, if your location is Americas, enter 2.

Please select a country.

Enter your country. For example, if your country is United States, enter 47.

Please select one of the following time zone regions

Enter your time zone. For example, if your time zone is Pacific time, enter 21.

The following information has been given:         United States         Pacific Time Therefore TZ='America/Los_Angeles' will be used. Local time is now:      Thu Oct 20 07:19:36 PDT 2005. Universal Time is now:  Thu Oct 20 14:19:36 UTC 2005. Is the above information OK?

If the information is correct, enter 1.

Here is that TZ value again, this time on standard output so that you can use the /usr/bin/tzselect command in shell scripts: do you want to configure time server  (y/n) [y]: y

If you want to configure a time server, enter y.

Enter network time server:10.162.39.1 Use 10.162.39.1 for timeserver (y/n) [y]: y Do you want to configure DNS(s) (y/n) [y]: y Enter DNS: 10.162.39.57 Use 10.162.39.57 for DNS (y/n) [y]: y configure another DNS? (y/n) [n]: n

If you want to configure one or more domain name servers, enter y.

Commit changes? (y/n) [n]: y

To confirm your configuration options and values, enter y.

Parent topic: Configuring the Network for Oracle Exalytics In-Memory Machine

4.7.4 Verifying the Configuration

After the exalytics_configure_network.sh script runs successfully, you can verify the network configuration for your Oracle Exalytics In-Memory Machine machine as follows:

  • Ping 10 GbE network addresses to verify the 10 GbE network interfaces

  • Ping 1 GbE network addresses to verify the 1 GbE network interfaces

  • Run the ibstat command on the Oracle Exalytics In-Memory Machine to verify the InfiniBand network interface

  • Ping the gateway addresses

  • Ping an IP address of a machine that is in the same subnet as Oracle Exalytics In-Memory Machine for each of the interfaces

  • Verify the log file (/var/log/init-exalytics/init-exalytics.log)

  • Run the ifconfig -a command to verify the network configuration

Parent topic: Configuring the Network for Oracle Exalytics In-Memory Machine