Manage the Unidesk ELM (virtual appliance)

In this article:

The Enterprise Layer Manager (ELM) is a virtual appliance that coordinates communication in the Unidesk environment and manages copies of your Layers and Image Templates. Based on CentOS, the ELM hosts the Unidesk Management Console (UMC), a friendly interface where you create Unidesk Layers and use those Layers to publish Layered Images.

You can log into the ELM and modify the administrator password, network address, NTP servers, and Time Zone settings using the Unidesk Appliance Configuration utility, as described here.

Before you start

o Make sure that the Unidesk Enterprise Layer Manager (ELM) is running in your hypervisor.

o Make sure you have the password for an account with administrator privileges

Log into the ELM using an account with administrator privileges

1. Using either your hypervisor console or SSH, log into the ELM as administrator (default password Unidesk1).

   • Note: If the ELM is in Azure, type /opt/sbin/cfg_launcher, and press Enter.

   This opens the Unidesk Appliance Configuration utility.

Change the administrator password

1. Log in to the ELM's Appliance Configuration utility, as described above.
2. At the Appliance Configuration utility's Action prompt, enter P (for Password change), and press Return.
3. When prompted, enter the new password, and then confirm the password. A message confirms that the ** Password changed successfully.
4. Press the Enter key to continue.
5. At the Action prompt, enter Q to quit.

Configure networking (includes Static IP Address option)

You can change the ELM's IP address and/or its DNS servers.

When the ELM is first deployed, the DNS settings are retrieved through DHCP. If DHCP is not available and you will be using static IP addresses, once you select Static, you will be prompted to enter the IP addresses for your DNS servers.

1. Log in to the ELM's Appliance Configuration utility, as described above.
2. At the Action prompt, enter C (for Configure Networking), and press Return.
3. At the next prompt, type D for Dynamic (DHCP) or S for Static.

   If you choose Static, you will be prompted for the IP address and Subnet mask, along with default addresses for the Gateway and DNS addresses.

4. When prompted, enter Y to save settings.
5. At the Action prompt, enter Q to quit.
6. Restart the appliance.

Synchronize the system clock with NTP servers

You can synchronize the system clock on the ELM by configuring NTP servers. You can specify how many NTP servers you need, with 6 being the maximum. And, you can add and remove NTP servers, as needed. Where possible your existing servers will be used as defaults.

1. Log in to the ELM's Appliance Configuration utility, as described above.
2. At the Action prompt, enter N for NTP servers change, and press Return. A list of your current NTP servers is displayed.

3. At the prompt, specify how many NTP servers you need by typing a number from 0 to 6.

   • 0 - All servers will be removed (you will be warned).
   • 1-6 - You will be prompted to accept or replace each of the current servers.
     
4. For each server, press Enter to accept the current value. Or, enter a new server address (Example: 3.pool.ntp.org). Once the last address is entered, an NTP Server Summary is displayed.
5. Enter S to save the settings.
6. At the Action prompt, enter Q to quit.
7. Restart the appliance.

Change the Time Zone

1. Log in to the ELM's Appliance Configuration utility, as described above.
2. At the Action prompt, enter T for Timezone change, and press Return. The current time zone is displayed.
3. Press Enter to display available timezones. The first bunch of time zones are displayed in alphabetical order, starting with the

4. Advance through the timezone codes until you see yours:

   • Enter - Advances one line at a time.
   • Page Up Page Down - Displays the next or previous screen full of choices.

   Or search the timezones:

   • Type Slash (/) and part of the name you are looking for.
5. When your timezone is displayed, press Q to get to the prompt.
6. Type the number for your timezone. The timezone you entered is displayed.
7. Press Enter to complete the change.
8. At the Action prompt, enter Q to quit.
9. Restart the appliance.