| pgpool-II 4.1.2 Documentation | |||
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Pgpool-II supports two destinations for logging the Pgpool-II messages. The supported log destinations are stderr and syslog. You can also set this parameter to a list of desired log destinations separated by commas if you want the log messages on the multiple destinations.
#for example to log on both syslog and stderr
log_destination = 'syslog,stderr'
The default is to log to stderr only.
Note: On some systems you will need to alter the configuration of your system's syslog daemon in order to make use of the syslog option for log_destination. Pgpool-II can log to syslog facilities LOCAL0 through LOCAL7 (see syslog_facility), but the default syslog configuration on most platforms will discard all such messages. You will need to add something like:
local0.* /var/log/pgpool.logto the syslog daemon's configuration file to make it work.
This parameter can be changed by reloading the Pgpool-II configurations.
See also the documentation of your system's syslog daemon. When logging to syslog is enabled, this parameter determines the syslog "facility" to be used. You can choose from LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7; the default is LOCAL0. See also the documentation of your system's syslog daemon.
This parameter can be changed by reloading the Pgpool-II configurations.
When logging to syslog is enabled, this parameter determines the program name used to identify Pgpool-II messages in syslog logs. The default is pgpool.
This parameter can be changed by reloading the Pgpool-II configurations.
Controls which minimum message levels are sent to the client. Valid values are DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, LOG, NOTICE, WARNING and ERROR. Each level includes all the levels that follow it. The default is NOTICE.
This parameter can be changed by reloading the Pgpool-II configurations. You can also use PGPOOL SET command to alter the value of this parameter for a current session.
The default is WARNING. Controls which minimum message levels are emitted to log. Valid values are DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, INFO, NOTICE, WARNING, ERROR, LOG, FATAL, and PANIC. Each level includes all the levels that follow it. The default is WARNING.
This parameter can be changed by reloading the Pgpool-II configurations. You can also use PGPOOL SET command to alter the value of this parameter for a current session.
Setting to on, prints all SQL statements to the log.
This parameter can be changed by reloading the Pgpool-II configurations. You can also use PGPOOL SET command to alter the value of this parameter for a current session.
Similar to log_statement, except that it print the logs for each DB node separately. It can be useful to make sure that replication or load-balancing is working.
This parameter can be changed by reloading the Pgpool-II configurations. You can also use PGPOOL SET command to alter the value of this parameter for a current session.
Setting to on, prints client messages to the log.
This parameter can be changed by reloading the Pgpool-II configurations. You can also use PGPOOL SET command to alter the value of this parameter for a current session.
Setting to on, prints the hostname instead of IP address in the ps command result, and connection logs (when log_connections is on).
This parameter can be changed by reloading the Pgpool-II configurations.
Setting to on, prints all client connections from to the log.
This parameter can be changed by reloading the Pgpool-II configurations.
Controls the amount of detail emitted for each message that is logged. Valid values are TERSE, DEFAULT, and VERBOSE, each adding more fields to displayed messages. TERSE excludes the logging of DETAIL, HINT, and CONTEXT error information.
This parameter can be changed by reloading the Pgpool-II configurations. You can also use PGPOOL SET command to alter the value of this parameter for a current session.
This is a printf-style string that is output at the beginning of
each log line.
% characters begin "escape sequences" that are replaced
with information outlined below.
All unrecognized escapes are ignored. Other characters are copied straight to
the log line. Default is '%t: pid %p: ', which prints timestamp and process id,
which keeps backward compatibility with prePgpool-II
V3.4.
Table 5-5. log_line_prefix escape options
| Escape | Effect |
|---|---|
| %a | Client application name |
| %p | Process ID (PID) |
| %P | Process name |
| %t | Time stamp |
| %d | Database name |
| %u | User name |
| %l | Log line number for each process |
| %% | '%' character |
This parameter can be changed by reloading the Pgpool-II configurations.