There are several configuration parameters that affect the behavior of the replication system. In this section, we describe how to set the slon daemon's configuration parameters; the following subsections discuss each parameter in detail.
All parameter names are case-insensitive. Every parameter takes a value of one of four types: boolean, integer, floating point, or string. Boolean values may be written as ON, OFF, FALSE, YES, NO, 1, 0 (all case-insensitive) or any unambiguous prefix of these.
One parameter is specified per line. The equal sign between name and value is optional. Whitespace is insignificant and blank lines are ignored. Hash marks (#) introduce comments anywhere. Parameter values that are not simple identifiers or numbers must be single-quoted.
Some options may be set through the Command-line, these options override any conflicting settings in the configuration file.
syslog (integer)Sets up logging to syslog. If this parameter is 1, messages go both to syslog and the standard output. A value of 2 sends output only to syslog (some messages will still go to the standard output/error). The default is 0, which means syslog is off.
syslog_facility (string)Sets the syslog "facility" to be used when syslog enabled. Valid values are LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The default is LOCAL0.
syslog_ident (string)Sets the program name used to identify slon messages in syslog. The default is slon.
log_level (integer)Debug log level (higher value ==> more output). Range: [0,4], default 0
There are nine log message types; using this option, some or all of the "debugging" levels may be left out of the slon logs. In Slony-I version 2, a lot of log message levels have been revised in an attempt to ensure the "interesting stuff" comes in at CONFIG/INFO levels, so that you could run at level 0, omitting all of the "DEBUG" messages, and still have meaningful contents in the logs.
log_pid (boolean)Determins, if you would like the pid of the (parent) slon process to appear in each log line entry.
log_timestamp (boolean)Determines if you would like the timestamp of the event being logged to appear in each log line entry.
log_timestamp_format (string)A strftime()-conformant format
string for use if log_timestamp is enabled. The
default is "%Y-%m-%d %H:%M:%S %Z"
pid_file (string)Location and filename you would like for a file containing the Process ID of the slon process. The default is not defined in which case no file is written.