Configuration

Configuration of Opus should take around 10 minutes.

You will:

• Configure networking.
• Setup an SSH key.
• Set a strong admin password.
• Provide an Active Directory server for user authentication.

Networking

Setting a static IP address

[Recommended]

After deploying the virtual machine it is good practice to set a static IP address for the appliance.

Note

To complete this step you will require:

• An available static IP address
• Routing and DNS settings

Connect to the virtual machine's Remote Console to access a command prompt.

If DHCP is configured to return settings that are applicable in a static context, helpful commands when configuring a static IP address include:

Command	Description
ip route | grep default	Print the default gateway set by DHCP
ip addr show eth0	Print the current IP address and netmask
cat /etc/resolv.conf	Show the current DNS settings

Run sudo netconf to start the network setup utility:

Once configuration is complete, run sudo reboot when prompted. This will restart Opus with the new IP address.

Securing the appliance

After configuring the network, the next step is to secure it.

Connect to the appliance with a web-browser using the IP address shown in vSphere.

Opus creates a self-signed certificate on first boot that will be reported as insecure by browsers:

Manually verify that the connection is secure by viewing the certificate:

Scroll down and verify that the SHA256 fingerprint:

...matches the output of the fingerprint command on the Remote Console:

Warning

The fingerprint command is not available over SSH.

When you are satisfied that the connection is secure, trust the certificate and proceed to the appliance's web UI.

Master SSH key

Opus does not use a password for SSH authentication.

The first SSH connection to Opus will set a master key. Opus will pick a random username for this initial connection.

Note

Additional keys can be added after setup.

Grab the ssh command from the web UI and run it locally:

If you are on Windows you will need to download putty and configure an SSH key.

If you have not used SSH before you may have to generate an SSH key pair:

ssh-keygen -t rsa

On connecting, the appliance should report that your key has been added:

The appliance will add your public key to /var/disk/config/authorized_keys. Append public keys to this file to allow additional administrators access.

Future SSH connection should be made with the username support.

Admin password

Back in the web-browser, Opus will ask you to choose a strong password for the admin local account:

The admin account has complete control over the appliance. It is recommended that you generate a strong password and store it in a vault or password manager, then switch to using an Active Directory account for everyday access to Opus.

Active Directory

[Recommended]

Opus can authenticate Active Directory users using LDAPS.

Note

To complete this step you will require:

• The active directory domain you wish to use for authentication, plus the host and LDAPS port if it is not resolvable
• The sAMAccountNames for list of groups you wish to allow access to Opus, e.g: All Users

Login to the web interface as admin and then click on the 'Users' tab. Click the 'Configure Active Directory' button:

This will pop-up a web form:

You will need to provide:

Setting	Description	Default
Domain	The domain used by Active Directory	None
Host	The host and port LDAPS is listening on.	The host returned by a DNS lookup for Domain
Server name	The server name presented on the certificate (this may be different to the domain).	The certificate's common name
Search scope	A scope to search for users in.	The Domain formatted as a distinguished name
Groups	One or more sAMAccountNames of any groups that are allowed access to Opus	All Users

Installing custom HTTPS certificates

[Advanced, Optional]

Replace the files at /var/disk/certs/https.key and /var/disk/certs/https.crt.

You can use ssh:

tar -c https.key https.crt | ssh support@<address> -C "tar -x --no-same-owner -C /tmp/"

ssh support@<address> -C "sudo mv /tmp/https.* /var/disk/certs/https.*"

or edit the files using vim or nano.

Reboot the appliance.

Configuring HashiCorp Vault

[Recommended, Optional]

Opus comes with a copy of HashiCorp Vault running on port 8200.

Navigating there with a browser will take you to the initial setup wizard.

Here you will create keys that will be required whenever Opus is restarted or the vault is sealed.

Warning

Put your keys in a safe place! Losing your keys will permanently lock you out of the vault.

Recommended configuration:

Environment	Key Share	Key Threshold
Development	1	1
Production	3	5

Once the initial setup is complete and the vault unsealed you can now add it to Opus.

Back in Opus, click the Vaults section and select Add Vault.

Complete

After setting a password for admin you will be asked to log in.

Setup is now complete.