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object-expirer.conf - configuration file for the OpenStack Swift object

object-expirer.conf(5) OpenStack Swift object-expirer.conf(5)

NAME

object-expirer.conf - configuration file for the OpenStack Swift object expirer daemon
 
 
 

SYNOPSIS

object-expirer.conf
 
 
 

DESCRIPTION

This is the configuration file used by the object expirer daemon. The daemon's function is to query the internal hidden expiring_objects_account to discover objects that need to be deleted and to then delete them.
 
The configuration file follows the python-pastedeploy syntax. The file is divided into sections, which are enclosed by square brackets. Each section will contain a certain number of key/value parameters which are described later.
 
Any line that begins with a '#' symbol is ignored.
 
You can find more information about python-pastedeploy configuration format at http://pythonpaste.org/deploy/#config-format
 
 
 

GLOBAL SECTION

This is indicated by section named [DEFAULT]. Below are the parameters that are acceptable within this section.
 
swift_dir
Swift configuration directory. The default is /etc/swift.
user
The system user that the object server will run as. The default is swift.
log_name
Label used when logging. The default is swift.
log_facility
Syslog log facility. The default is LOG_LOCAL0.
log_level
Logging level. The default is INFO.
log_address
Logging address. The default is /dev/log.
log_max_line_length
The following caps the length of log lines to the value given; no limit if set to 0, the default.
log_custom_handlers
Comma separated list of functions to call to setup custom log handlers. functions get passed: conf, name, log_to_console, log_route, fmt, logger, adapted_logger. The default is empty.
log_udp_host
If set, log_udp_host will override log_address.
log_udp_port
UDP log port, the default is 514.
log_statsd_host
StatsD server. IPv4/IPv6 addresses and hostnames are supported. If a hostname resolves to an IPv4 and IPv6 address, the IPv4 address will be used.
log_statsd_port
The default is 8125.
log_statsd_default_sample_rate
The default is 1.
log_statsd_sample_rate_factor
The default is 1.
log_statsd_metric_prefix
The default is empty.
nice_priority
Modify scheduling priority of server processes. Niceness values range from -20 (most favorable to the process) to 19 (least favorable to the process). The default does not modify priority.
ionice_class
Modify I/O scheduling class of server processes. I/O niceness class values are IOPRIO_CLASS_RT (realtime), IOPRIO_CLASS_BE (best-effort) and IOPRIO_CLASS_IDLE (idle). The default does not modify class and priority. Work only with ionice_priority.
ionice_priority
Modify I/O scheduling priority of server processes. I/O niceness priority is a number which goes from 0 to 7. The higher the value, the lower the I/O priority of the process. Work only with ionice_class. Ignored if IOPRIO_CLASS_IDLE is set.
 
 
 

PIPELINE SECTION

This is indicated by section name [pipeline:main]. Below are the parameters that are acceptable within this section.
 
pipeline
It is used when you need to apply a number of filters. It is a list of filters ended by an application. The default should be "catch_errors cache proxy-server"
 
 
 

APP SECTION

This is indicated by section name [app:object-server]. Below are the parameters that are acceptable within this section.
use
Entry point for paste.deploy for the object server. This is the reference to the installed python egg. The default is egg:swift#proxy. See proxy-server.conf-sample for options or See proxy-server.conf manpage.
nice_priority
Modify scheduling priority of server processes. Niceness values range from -20 (most favorable to the process) to 19 (least favorable to the process). The default does not modify priority.
ionice_class
Modify I/O scheduling class of server processes. I/O niceness class values are IOPRIO_CLASS_RT (realtime), IOPRIO_CLASS_BE (best-effort) and IOPRIO_CLASS_IDLE (idle). The default does not modify class and priority. Work only with ionice_priority.
ionice_priority
Modify I/O scheduling priority of server processes. I/O niceness priority is a number which goes from 0 to 7. The higher the value, the lower the I/O priority of the process. Work only with ionice_class. Ignored if IOPRIO_CLASS_IDLE is set.
 
 
 

FILTER SECTION

Any section that has its name prefixed by "filter:" indicates a filter section. Filters are used to specify configuration parameters for specific swift middlewares. Below are the filters available and respective acceptable parameters.
 
[filter:cache]
 
Caching middleware that manages caching in swift.
 
use
Entry point for paste.deploy for the memcache middleware. This is the reference to the installed python egg. The default is egg:swift#memcache. See proxy-server.conf-sample for options or See proxy-server.conf manpage.
 
 
[filter:catch_errors]
use
Entry point for paste.deploy for the catch_errors middleware. This is the reference to the installed python egg. The default is egg:swift#catch_errors. See proxy-server.conf-sample for options or See proxy-server.conf manpage.
 
[filter:proxy-logging]
 
Logging for the proxy server now lives in this middleware. If the access_* variables are not set, logging directives from [DEFAULT] without "access_" will be used.
 
use
Entry point for paste.deploy for the proxy_logging middleware. This is the reference to the installed python egg. This is normally egg:swift#proxy_logging. See proxy-server.conf-sample for options or See proxy-server.conf manpage.
 
 
 

ADDITIONAL SECTIONS

The following sections are used by other swift-account services, such as replicator, auditor and reaper.
[account-replicator]
interval
Replaces run_pause with the more standard "interval", which means the replicator won't pause unless it takes less than the interval set. The default is 300.
auto_create_account_prefix
The default is ".".
expiring_objects_account_name
The default is 'expiring_objects'.
report_interval
The default is 300 seconds.
concurrency
Number of replication workers to spawn. The default is 1.
processes
Processes is how many parts to divide the work into, one part per process that will be doing the work. Processes set 0 means that a single process will be doing all the work. Processes can also be specified on the command line and will override the config value. The default is 0.
process
Process is which of the parts a particular process will work on process can also be specified on the command line and will override the config value process is "zero based", if you want to use 3 processes, you should run processes with process set to 0, 1, and 2. The default is 0.
reclaim_age
The expirer will re-attempt expiring if the source object is not available up to reclaim_age seconds before it gives up and deletes the entry in the queue. The default is 604800 seconds.
recon_cache_path
Path to recon cache directory. The default is /var/cache/swift.
 
 

DOCUMENTATION

More in depth documentation about the swift-object-expirer and also OpenStack Swift as a whole can be found at http://swift.openstack.org/admin_guide.html and http://swift.openstack.org
 
 

SEE ALSO

swift-proxy-server.conf(5),
 
03/15/2012 Linux