The domain configuration server (DCS) is a daemon process that runs on Sun servers that support remote dynamic reconfiguration (DR) clients. It is started by inetd(1M) when the first DR request is received from a client connecting to the network service sun-dr. After the DCS accepts a DR request, it uses the libcfgadm(3LIB) interface to execute the DR operation. After the operation is performed, the results are returned to the client.

The DCS listens on the network service labeled sun-dr. Its underlying protocol is TCP, and it is invoked as an inetd server using the TCP transport. The entries for the DCS in the /etc/inet/inetd.conf file are as follows:

sun-dr stream tcp wait root /usr/lib/dcs dcs
sun-dr stream tcp6 wait root /usr/lib/dcs dcs

These entries enable remote DR operations. Removing them does not negatively impact the server; however, all DR operations initiated from a remote host would fail.

-s sessions

Sets the number of active sessions that the DCS allows at any one time. When the limit is reached, the DCS stops accepting connections until active sessions complete the execution of their DR operation. If this option is not specified, a default value of 128 is used.

The DCS uses syslog(3C) to report status and error messages. All of the messages are logged with the LOG_DAEMON facility. Error messages are logged with the LOG_ERR and LOG_NOTICE priorities, and informational messages are logged with the LOG_INFO priority. The default entries in the /etc/syslog.conf file log all of the DCS error messages to the /var/adm/messages log.

cfgadm_sbd(1M), inetd(1M), syslog(3C), config_admin(3CFGADM), libcfgadm(3LIB), inetd.conf(4), syslog.conf(4), dr(7D)