Harmonic MediaGrid

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Chapter 4 System Configuration

Joining a Harmonic MediaGrid Cluster to an Apple Open Directory Domain

Joining a High Bandwidth ContentBridge to an Open Directory Server with

OS X 10.11 or Later

Follow the procedures in this section in order.

NOTE: This procedure requires Harmonic MediaGrid Server version 4.0 or later.

IMPORTANT: Before you can perform this procedure, you must install MediaGridOSXServer-

omauthchk.dmg

onto the Open Directory server. This file is available with the Harmonic MediaGrid

software downloads on the Harmonic website.

NOTE: It is not necessary to manually create a ContentBridge account on the Apple Open Directory server.

Creating Passwordless SSH Access from the High Bandwidth ContentBridge to the Open

Directory Server

1. Create a service account on the Open Directory server for running omauthchk.

Harmonic recommends that you name the service account “omauthchk.”

2. Log in to the Open Directory server using the service account.

3. From the home directory, make an .ssh subdirectory, if needed, and then verify permissions

and enter the .ssh directory. For example:

mkdir -p .ssh

chmod 700 .ssh

cd .ssh

4. In the .ssh directory, generate private and public authentication keys and then press

Enter

twice to set up passwordless access. Suggested key names are as follows:

 id_omauthchk

 id_omauthchk.pub

For example, ssh-keygen -f id_omauthchk

5. Append the public key to the authorized_keys file, as follows:

chmod 644 authorized_keys (if present)

cat id_omauthchk.pub >> authorized_keys

chmod 444 authorized_keys

6. Connect a monitor and keyboard to the High Bandwidth ContentBridge, and then log in with

the following user name and password:

User name: root

Password: omneon

7. From /opt/omclb/conf, connect interactively to the Open Directory server using SSH, as

follows:

ssh -l omauthchk <OD_server_IP_addrress>

8. Exit back to the High Bandwidth ContentBridge, and then securely copy the private key, as

follows:

scp omauthchk@<OD server>:.ssh/id_omauthchk /opt/omclb/conf/

id_omauthchk

Harmonic MediaGrid - Later