(ITS#8635) serverID doc updates (0 is single master only)

[quanah@openldap.org]

Full_Name: Quanah Gibson-Mount
Version: 2.4.44
OS: N/A
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (47.208.148.239)


The man page for serverID says:

serverID <integer> [<URL>]
              Specify an integer ID from 0 to 4095 for this server (limited to 3
 hexadecimal  digits).   The  ID  may  also  be
              specified  as  a  hexadecimal  ID by prefixing the value with
"0x".  These IDs are required when using multimaster
              replication and each master must have a unique ID. Note that this
requirement also  applies  to  separate  masters
              contributing to a glued set of databases.  If the URL is provided,
this directive may be specified multiple times,
              providing a complete list of participating servers and their IDs.
The fully  qualified  hostname  of  each  server
              should  be  used  in  the  supplied  URLs. The IDs are used in the
"replica id" field of all CSNs generated by the
              specified server. The default value is zero.  Example:

            serverID 1


However, it does not specifically note that serverID 0 is reserved for single
master only, and that in MMR & Mirror mode configurations, serverIDs must be 1
and higher.

The admin guide likely needs similar updating.