Technical Documentation

Changing Network and System Settings for a Junos Space Virtual Appliance

You can change some of the basic configuration options that you configured when you first installed and set up your Junos Space Virtual Appliance. You can also change system time defaults and retrieve system log files your virtual appliance.

Each time you log in from the Junos Space system console, the Junos Space Appliance Settings menu is displayed. Follow the system prompts from the menu to set or modify any menu options. Password changes take effect immediately. Any configuration changes you make do not take effect until you apply the changes.

You can perform the following tasks from the Junos Space Appliance Settings menu:

Changing the Password

To change your password:

  1. From the Junos Space Appliance Settings menu, enter 1 at the prompt.
  2. Enter y when prompted to change the password for an admin user.
  3. Type the new password and press Enter.
  4. Retype the new password and press Enter.

    Your password is updated and the setup program returns you to the main menu.

Setting Routing Options

To modify the default gateway for the management interface (eth0) or the device management interface (eth3):

  1. From the Junos Space Appliance Settings menu, enter 2 at the prompt.

  2. Enter one of the following options:

    • Enter 1 to change the default gateway for the management interface (eth0).

      Follow the prompts to change the IP address of the default gateway and return to the main menu.

    • Enter 2 to change the default gateway for the device management interface (eth3).

      Follow the prompts to change the IP address of the default gateway and return to the main menu.

      Note: Option 2 is available only when a device management interface (eth3) was specified during the initial configuration of the virtual appliance.

Adding DNS Servers

You can add up to three DNS servers. Enter each one using dotted decimal notation (for example, 10.157.191.252) Each addition returns you to the main menu.

To add a DNS server:

  1. From the Junos Space Appliance Settings menu, enter 3 at the prompt.
  2. Enter 1 to add a nameserver.
  3. Enter the new nameserver in dotted decimal notation.

Repeat Step 1 through Step 3 to add another DNS server.

Setting the System Time

When you configure each Junos Space Virtual Appliance with an NTP server, you ensure that, if the first node (which is used to synchronize time for all nodes in the fabric) goes down, all other nodes in the fabric remain synchronized. To ensure this behavior, all nodes in a fabric should be configured with the same external NTP source that you configured for the first appliance.

To change time options for an appliance:

  1. From the Junos Space Appliance Settings menu, enter 4 at the prompt.
  2. Enter 2 to set NTP servers.

    NTP servers automatically set the system clock based on external time sources.

  3. Enter of the following values at the prompt:

    • 1 to enable or disable NTP.
    • 2 to add an NTP server.
    The remaining numbered options let you remove an NTP server from the list.
  4. Follow the prompts to enable, set, or delete the NTP servers and return to the main menu.

Retrieve Logs

To retrieve system log files, you can use SecureCopy (SCP) if the network is functional, or a USB device if the network is down.

Note: To save the system log file to a USB device, the device must be connected to the Junos Space appliance.

To retrieve system logs:

  1. From the Junos Space Appliance Settings menu, enter 5 at the prompt.
  2. Choose a method for retrieving log files from the Retrieve Logs submenu:
    1. To save the log files to USB , enter 1 and follow the prompts.

      Junos Space retrieves the log files on all cluster members and combines them into a tar file. Once the file is created, you can copy the file onto a USB device.

    2. To save the log files using SCP enter 2 and follow the prompts.

      Junos Space retrieves the log files on all cluster members and combine them into a tar file. Once the file is created, you can transfer the file to a remote SCP server.

Expand VM Drive Size

To increase disk space on a Junos Space Virtual Appliance, you must first add a disk resource in the VMWare Infrastructure Client to create a new virtual disk. Then you initiate a scan for the additional drive space that you added from the VMWare Infrastructure Client to increase the file system size.

Note: The Junos Space Virtual Appliance must be powered on to increase disk space.

To expand the Virtual Machine drive size:

  1. Enter 6 to expand the VM drive size.
  2. Enter y to initiate a scan for the additional drive space you added when you deployed the virtual appliance.

When the scan completes, Junos Space displays the results to verify that file system size was increased to include the new logical volume.

Setting Security Options

By default, the firewall and SSH security options are enabled on the Junos Space appliance.

Note: Juniper recommends that, in most cases, the firewall remains enabled. However, if you are using Service Now to send email or SNMP notifications or using Service Now through a proxy server, you must disable the firewall. In addition, if the Service Now application is running in a multi-node fabric (node cluster), the firewall must be disabled across each node in the fabric.

To enable or disable the firewall:

  1. From the Junos Space Appliance Settings menu, enter 7 at the prompt.
  2. Change the firewall setting:
    • If the firewall is currently enabled, enter 1 to disable the firewall.
    • If the firewall is currently disabled, enter 1 to enable the firewall.

To enable or disable SSH:

  1. From the Junos Space Appliance Settings menu, enter 7 at the prompt.
  2. Change the SSH setting:
    • If SSH is currently enabled, enter 2 to disable SSH.
    • If SSH is currently disabled, enter 2 to enable SSH.

(Debug) Run Shell

To run shell commands to debug Junos Space:

  1. From the Junos Space Appliance Settings menu, enter 8 and follow the prompts.

Published: 2010-03-18