• Version 4.0 and earlier: pbsyncd not available.
  • Version 5.0 and later: pbsyncd available.

The pbsyncd server listens for log synchronization requests from one or multiple pbsync clients.

pbsyncd is started as a stand-alone service or daemon from the command line or startup scripts, preferably running on each system that is also running pblogd (for log synchronization) or pbmasterd (for policy updates). A new TCP port is required to accept requests. The default port is 24350. This component is referred to as the server.

Log synchronization: When the server receives a synchronization request, it checks its own pb.settings file to determine the event log file name (as specified in the eventlog keyword) to retrieve. If the eventlog keyword is not specified, then the server uses the event log file name that is specified in the request.

Changes that are made to the pb.settings file after the daemon is started do not affect the operation of the daemon. If you change the pb.settings file, then you must restart the daemon for the changes to take effect. If you do not restart the daemon, then the daemon continues to operate using a snapshot of the pb.settings file that was cached at the time the daemon was started.

If pbsyncd detects an error, then an error message is logged in the server’s diagnostic log file. For log synchronization, the client can request the following:

  • That event logs from different log servers be merged
  • That partial I/O logs from different log servers be merged into one I/O log
  • That merged logs be sent to the client
pbsyncd [options]
pbsyncd -v|--version
pbsyncd --help
-d, --daemon

Runs pbsyncd in daemon mode.

To use the -d option, you must also use the -p option.

-f, --foreground Runs the server in the foreground when using daemon mode.
-p, --port port_number Instructs the server to listen to the defined port number (use a TCP port other than the default).
-e, --errorlog errorfile Uses the named file as the error log.
-s, --syslog <facility> Uses the syslog facilities.
-v, --version Displays the version.
--help Displays the help message and exits.
Synchronization daemon unable to start The synchronization daemon was unable to start.
Synchronization daemon: Unknown request (0xcode) The request from pbsync was unknown or not supported.
Unable to connect to log server <name> The system is unable to establish communications with the server, and is therefore unable to retrieve the log file.
Unable to retrieve file <path> on server <name> The remote server reports that it is unable to read or transmit the file; check file permissions or path.
Unique ID mismatch on <server name>:<path>:<uniqueID> (local ID:<uniqueID>) The unique ID in the remote log files mismatch with the local server.
Timed out while retrieving <server name>:<path>:<port> The operation timed out while retrieving a remote log file, causing the merge to fail.
Insufficient storage space to complete synchronization There is insufficient storage to either retrieve or merge the file; user must free up some space.
Success The synchronization operation was successful.


Entering the following starts the daemon and specifies /var/log/syncserver.log as the output error file:
pbsyncd -d -p 24345 -e /var/log/syncserver.log

For more information, please see the following: