object-expirer.conf(5)

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.

delay_reaping_account/container

Normally, the expirer begins reaping expired objects immediately. You can add options prefixed with "delay_reaping_" in the form of "delay_reaping_<ACCT>[/<CNTR>]" to cause the expirer to delay processing of tasks in those account or account/container. The <ACCT>[/<CNTR>] part of the config option names should url-quote the paths. The value is in seconds. The default is no delay for any tasks.

round_robin_task_cache_size

Number of tasks objects to cache before processing.

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.

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"

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.

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.

Caching middleware that manages caching in swift.

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.

[object-expirer]

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.

report_interval

The default is 300 seconds.

request_tries

The number of times the expirer's internal client will attempt any given request in the event of failure. The default is 3.

concurrency

Number of expirer 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.

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.