OSF DCE Administration Guide--Introduction

OSF DCE Administration Guide—Introduction

6. DFS servers, Security and CDS replicas, GDA servers, Password Management

servers, and additional time servers

Note also that you must conﬁgure a CDS client on all Security server (master or replica)

machines that are not running a CDS server. You must also conﬁgure a Time client on

all machines that are not running a Time server. Be sure to conﬁgure the clients only

after you have conﬁgured all servers.

8.3 Split Server Conﬁgurations

If you conﬁgure the master Security server and the CDS initial server on different

machines, the cell is said to have a ‘‘split server’’ conﬁguration. If you choose a split

server conﬁguration, you must take some extra steps in the initial cell conﬁguration

phase. This is because every DCE machine must be conﬁgured as a DCE client,

including machines that are also conﬁgured as some kind of DCE server machine.

However, a DCE client conﬁguration cannot succeed unless a CDS server is available.

Therefore, the initial Security server machine cannot immediately be conﬁgured as a

DCE client, but must wait until a CDS server machine is conﬁgured.

This is not a problem when the master Security server and CDS server are conﬁgured on

one machine. However, in a split server conﬁguration, you must ﬁrst conﬁgure the

Security server, then conﬁgure the CDS server on another machine, and then come back

to the Security server machine and conﬁgure it as a DCE client or as an additional

server. The following steps detail these actions:

1. Conﬁgure Machine 1 as a Security server machine.

2. Go to Machine 2 and conﬁgure it as a CDS server machine.

3. Go back to Machine 1 and conﬁgure it as a DCE client.

Note that if you conﬁgure the Security server machine as some other kind of server

machine (for example, as a DTS server), then it will automatically be conﬁgured as a

DCE client. So the following scenario also works:

1. Conﬁgure Machine 1 as a Security server machine. The dce_conﬁg script will

prompt you with the clock synchronization question discussed in the following

subsection. When it does this, answer "n."

2. Go to Machine 2 and conﬁgure it as a CDS server machine.

3. Go back to Machine 1 and conﬁgure it as a DTS server.

In this scenario, Step 3 causes Machine 1 to be conﬁgured as a DCE client as well as a

DTS server.

Consult the OSF DCE Release Notes for the current information on timing and

sequence constraints when bringing up split server cells.

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