.. _account-server-config: ---------------------------- Account Server Configuration ---------------------------- This document describes the configuration options available for the account server. Documentation for other swift configuration options can be found at :doc:`index`. An example Account Server configuration can be found at etc/account-server.conf-sample in the source code repository. The following configuration sections are available: * :ref:`[DEFAULT] ` * `[account-server]`_ * `[account-replicator]`_ * `[account-auditor]`_ * `[account-reaper]`_ .. _account_server_default_options: ********* [DEFAULT] ********* =============================== ========== ============================================= Option Default Description ------------------------------- ---------- --------------------------------------------- swift_dir /etc/swift Swift configuration directory devices /srv/node Parent directory or where devices are mounted mount_check true Whether or not check if the devices are mounted to prevent accidentally writing to the root device bind_ip 0.0.0.0 IP Address for server to bind to bind_port 6202 Port for server to bind to keep_idle 600 Value to set for socket TCP_KEEPIDLE bind_timeout 30 Seconds to attempt bind before giving up backlog 4096 Maximum number of allowed pending connections workers auto Override the number of pre-forked workers that will accept connections. If set it should be an integer, zero means no fork. If unset, it will try to default to the number of effective cpu cores and fallback to one. Increasing the number of workers may reduce the possibility of slow file system operations in one request from negatively impacting other requests. See :ref:`general-service-tuning`. max_clients 1024 Maximum number of clients one worker can process simultaneously (it will actually accept(2) N + 1). Setting this to one (1) will only handle one request at a time, without accepting another request concurrently. user swift User to run as db_preallocation off If you don't mind the extra disk space usage in overhead, you can turn this on to preallocate disk space with SQLite databases to decrease fragmentation. disable_fallocate false Disable "fast fail" fallocate checks if the underlying filesystem does not support it. log_name swift Label used when logging log_facility LOG_LOCAL0 Syslog log facility log_level INFO Logging level log_address /dev/log Logging directory log_max_line_length 0 Caps the length of log lines to the value given; no limit if set to 0, the default. log_custom_handlers None Comma-separated list of functions to call to setup custom log handlers. log_udp_host Override log_address log_udp_port 514 UDP log port log_statsd_host None Enables StatsD logging; IPv4/IPv6 address or a hostname. If a hostname resolves to an IPv4 and IPv6 address, the IPv4 address will be used. log_statsd_port 8125 log_statsd_default_sample_rate 1.0 log_statsd_sample_rate_factor 1.0 log_statsd_metric_prefix eventlet_debug false If true, turn on debug logging for eventlet fallocate_reserve 1% You can set fallocate_reserve to the number of bytes or percentage of disk space you'd like fallocate to reserve, whether there is space for the given file size or not. Percentage will be used if the value ends with a '%'. This is useful for systems that behave badly when they completely run out of space; you can make the services pretend they're out of space early. nice_priority None 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 None 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. Linux supports io scheduling priorities and classes since 2.6.13 with the CFQ io scheduler. Work only with ionice_priority. ionice_priority None 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. =============================== ========== ============================================= **************** [account-server] **************** ============================= ============== ========================================== Option Default Description ----------------------------- -------------- ------------------------------------------ use Entry point for paste.deploy for the account server. For most cases, this should be ``egg:swift#account``. set log_name account-server Label used when logging set log_facility LOG_LOCAL0 Syslog log facility set log_level INFO Logging level set log_requests True Whether or not to log each request set log_address /dev/log Logging directory replication_server Configure parameter for creating specific server. To handle all verbs, including replication verbs, do not specify "replication_server" (this is the default). To only handle replication, set to a True value (e.g. "True" or "1"). To handle only non-replication verbs, set to "False". Unless you have a separate replication network, you should not specify any value for "replication_server". nice_priority None 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 None 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. Linux supports io scheduling priorities and classes since 2.6.13 with the CFQ io scheduler. Work only with ionice_priority. ionice_priority None 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. ============================= ============== ========================================== ******************** [account-replicator] ******************** ==================== ========================= ===================================== Option Default Description -------------------- ------------------------- ------------------------------------- log_name account-replicator Label used when logging log_facility LOG_LOCAL0 Syslog log facility log_level INFO Logging level log_address /dev/log Logging directory per_diff 1000 Maximum number of database rows that will be sync'd in a single HTTP replication request. Databases with less than or equal to this number of differing rows will always be sync'd using an HTTP replication request rather than using rsync. max_diffs 100 Maximum number of HTTP replication requests attempted on each replication pass for any one container. This caps how long the replicator will spend trying to sync a given database per pass so the other databases don't get starved. concurrency 8 Number of replication workers to spawn interval 30 Time in seconds to wait between replication passes databases_per_second 50 Maximum databases to process per second. Should be tuned according to individual system specs. 0 is unlimited. node_timeout 10 Request timeout to external services conn_timeout 0.5 Connection timeout to external services reclaim_age 604800 Time elapsed in seconds before an account can be reclaimed rsync_module {replication_ip}::account Format of the rsync module where the replicator will send data. The configuration value can include some variables that will be extracted from the ring. Variables must follow the format {NAME} where NAME is one of: ip, port, replication_ip, replication_port, region, zone, device, meta. See etc/rsyncd.conf-sample for some examples. rsync_compress no Allow rsync to compress data which is transmitted to destination node during sync. However, this is applicable only when destination node is in a different region than the local one. NOTE: Objects that are already compressed (for example: .tar.gz, mp3) might slow down the syncing process. recon_cache_path /var/cache/swift Path to recon cache nice_priority None 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 None 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. Linux supports io scheduling priorities and classes since 2.6.13 with the CFQ io scheduler. Work only with ionice_priority. ionice_priority None 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. handoffs_only no When handoffs_only mode is enabled the replicator will *only* replicate from handoff nodes to primary nodes and will not sync primary nodes with other primary nodes. handoff_delete auto the number of replicas which are ensured in swift. If the number less than the number of replicas is set, account-replicator could delete local handoffs even if all replicas are not ensured in the cluster. The replicator would remove local handoff account database after syncing when the number of successful responses is greater than or equal to this number. By default handoff partitions will be removed when it has successfully replicated to all the canonical nodes. ==================== ========================= ===================================== ***************** [account-auditor] ***************** ==================== ================ ======================================= Option Default Description -------------------- ---------------- --------------------------------------- log_name account-auditor Label used when logging log_facility LOG_LOCAL0 Syslog log facility log_level INFO Logging level log_address /dev/log Logging directory interval 1800 Minimum time for a pass to take accounts_per_second 200 Maximum accounts audited per second. Should be tuned according to individual system specs. 0 is unlimited. recon_cache_path /var/cache/swift Path to recon cache nice_priority None 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 None 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. Linux supports io scheduling priorities and classes since 2.6.13 with the CFQ io scheduler. Work only with ionice_priority. ionice_priority None 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. ==================== ================ ======================================= **************** [account-reaper] **************** ================== =============== ========================================= Option Default Description ------------------ --------------- ----------------------------------------- log_name account-reaper Label used when logging log_facility LOG_LOCAL0 Syslog log facility log_level INFO Logging level log_address /dev/log Logging directory concurrency 25 Number of replication workers to spawn interval 3600 Minimum time for a pass to take node_timeout 10 Request timeout to external services conn_timeout 0.5 Connection timeout to external services delay_reaping 0 Normally, the reaper begins deleting account information for deleted accounts immediately; you can set this to delay its work however. The value is in seconds, 2592000 = 30 days, for example. The sum of this value and the container-updater ``interval`` should be less than the account-replicator ``reclaim_age``. This ensures that once the account-reaper has deleted a container there is sufficient time for the container-updater to report to the account before the account DB is removed. reap_warn_after 2892000 If the account fails to be reaped due to a persistent error, the account reaper will log a message such as: Account has not been reaped since You can search logs for this message if space is not being reclaimed after you delete account(s). This is in addition to any time requested by delay_reaping. nice_priority None 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 None 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. Linux supports io scheduling priorities and classes since 2.6.13 with the CFQ io scheduler. Work only with ionice_priority. ionice_priority None 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. ================== =============== =========================================