Provided by: swift-proxy_2.7.1-0ubuntu2_all 
NAME
proxy-server.conf - configuration file for the openstack-swift proxy server
SYNOPSIS
proxy-server.conf
DESCRIPTION
This is the configuration file used by the proxy server and other proxy middlewares.
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.
bind_ip
IP address the proxy server should bind to. The default is 0.0.0.0 which will make
it bind to all available addresses.
bind_port
TCP port the proxy server should bind to. The default is 80.
bind_timeout
Timeout to bind socket. The default is 30.
backlog
TCP backlog. Maximum number of allowed pending connections. The default value is
4096.
admin_key
Key to use for admin calls that are HMAC signed. Default is empty, which will
disable admin calls to /info.
disallowed_sections
Allows the ability to withhold sections from showing up in the public calls to
/info. You can withhold subsections by separating the dict level with a ".". The
following would cause the sections 'container_quotas' and 'tempurl' to not be
listed, and the key max_failed_deletes would be removed from bulk_delete. Default
value is 'swift.valid_api_versions' which allows all registered features to be
listed via HTTP GET /info except swift.valid_api_versions information
workers
The number of pre-forked processes that will accept connections. Zero means no
fork. The default is auto which will make the server try to match the number of
effective cpu cores if python multiprocessing is available (included with most
python distributions >= 2.6) or fallback to one. It's worth noting that individual
workers will use many eventlet co-routines to service multiple concurrent requests.
max_clients
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. The default is 1024.
user The system user that the proxy server will run as. The default is swift.
expose_info
Enables exposing configuration settings via HTTP GET /info. The default is true.
swift_dir
Swift configuration directory. The default is /etc/swift.
cert_file
Location of the SSL certificate file. The default path is /etc/swift/proxy.crt.
This is disabled by default.
key_file
Location of the SSL certificate key file. The default path is /etc/swift/proxy.key.
This is disabled by default.
expiring_objects_container_divisor
The default is 86400.
expiring_objects_account_name
The default is 'expiring_objects'.
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
To cap the length of log lines to the value given. No limit if set to 0, the
default.
log_headers
The default is false.
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.
client_timeout
Time to wait while receiving each chunk of data from a client or another backend
node. The default is 60.
eventlet_debug
Debug mode for eventlet library. The default is false.
trans_id_suffix
This optional suffix (default is empty) that would be appended to the swift
transaction id allows one to easily figure out from which cluster that X-Trans-Id
belongs to. This is very useful when one is managing more than one swift cluster.
cors_allow_origin
Use a comma separated list of full url (http://foo.bar:1234,https://foo.bar)
strict_cors_mode
The default is true.
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 apply a number of filters. It is a list of filters ended
by an application. The normal pipeline is "catch_errors gatekeeper healthcheck
proxy-logging cache container_sync bulk tempurl ratelimit tempauth container-quotas
account-quotas slo dlo versioned_writes proxy-logging proxy-server".
Note: The double proxy-logging in the pipeline is not a mistake. The left-most
proxy-logging is there to log requests that were handled in middleware and never
made it through to the right-most middleware (and proxy server). Double logging is
prevented for normal requests. See proxy-logging docs.
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:healthcheck]
use Entry point for paste.deploy for the healthcheck middleware. This is the
reference to the installed python egg. This is normally egg:swift#healthcheck.
disable_path
An optional filesystem path which, if present, will cause the healthcheck URL to
return "503 Service Unavailable" with a body of "DISABLED BY FILE".
[filter:tempauth]
use Entry point for paste.deploy for the tempauth middleware. This is the reference
to the installed python egg. This is normally egg:swift#tempauth.
set log_name
Label used when logging. The default is tempauth.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
reseller_prefix
The reseller prefix will verify a token begins with this prefix before even
attempting to validate it. Also, with authorization, only Swift storage accounts
with this prefix will be authorized by this middleware. Useful if multiple auth
systems are in use for one Swift cluster. The default is AUTH.
auth_prefix
The auth prefix will cause requests beginning with this prefix to be routed to
the auth subsystem, for granting tokens, etc. The default is /auth/.
require_group
The require_group parameter names a group that must be presented by either X-
Auth-Token or X-Service-Token. Usually this parameter is used only with multiple
reseller prefixes (e.g., SERVICE_require_group=blah). By default, no group is
needed. Do not use .admin.
token_life
This is the time in seconds before the token expires. The default is 86400.
allow_overrides
This allows middleware higher in the WSGI pipeline to override auth processing,
useful for middleware such as tempurl and formpost. If you know you're not going
to use such middleware and you want a bit of extra security, you can set this to
false. The default is true.
storage_url_scheme
This specifies what scheme to return with storage urls: http, https, or default
(chooses based on what the server is running as) This can be useful with an SSL
load balancer in front of a non-SSL server.
user_<account>_<user>
Lastly, you need to list all the accounts/users you want here. The format is:
user_<account>_<user> = <key> [group] [group] [...] [storage_url] or if you want
underscores in <account> or <user>, you can base64 encode them (with no equal
signs) and use this format: user64_<account_b64>_<user_b64> = <key> [group]
[group] [...] [storage_url]
There are special groups of: .reseller_admin who can do anything to any account
for this auth and also .admin who can do anything within the account.
If neither of these groups are specified, the user can only access containers
that have been explicitly allowed for them by a .admin or .reseller_admin. The
trailing optional storage_url allows you to specify an alternate url to hand
back to the user upon authentication. If not specified, this defaults to
http[s]://<ip>:<port>/v1/<reseller_prefix>_<account> where http or https depends
on whether cert_file is specified in the [DEFAULT] section, <ip> and <port> are
based on the [DEFAULT] section's bind_ip and bind_port (falling back to
127.0.0.1 and 8080), <reseller_prefix> is from this section, and <account> is
from the user_<account>_<user> name.
Here are example entries, required for running the tests:
user_admin_admin = admin .admin .reseller_admin
user_test_tester = testing .admin
user_test2_tester2 = testing2 .admin
user_test_tester3 = testing3
[filter:authtoken]
To enable Keystone authentication you need to have the auth token middleware first to be
configured. Here is an example below, please refer to the keystone's documentation for
details about the different settings.
You'll need to have as well the keystoneauth middleware enabled and have it in your main
pipeline so instead of having tempauth in there you can change it to: authtoken
keystoneauth
paste.filter_factory = keystonemiddleware.auth_token:filter_factory
auth_uri = http://keystonehost:5000
auth_url = http://keystonehost:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = swift
password = password
# delay_auth_decision defaults to False, but leaving it as false will
# prevent other auth systems, staticweb, tempurl, formpost, and ACLs from
# working. This value must be explicitly set to True.
delay_auth_decision = False
cache = swift.cache
include_service_catalog = False
[filter:keystoneauth]
Keystone authentication middleware.
use Entry point for paste.deploy for the keystoneauth middleware. This is the
reference to the installed python egg. This is normally egg:swift#keystoneauth.
reseller_prefix
The reseller_prefix option lists account namespaces that this middleware is
responsible for. The prefix is placed before the Keystone project id. For
example, for project 12345678, and prefix AUTH, the account is named
AUTH_12345678 (i.e., path is /v1/AUTH_12345678/...). Several prefixes are
allowed by specifying a comma-separated list as in: "reseller_prefix = AUTH,
SERVICE". The empty string indicates a single blank/empty prefix. If an empty
prefix is required in a list of prefixes, a value of '' (two single quote
characters) indicates a blank/empty prefix. Except for the blank/empty prefix,
an underscore ('_') character is appended to the value unless already present.
operator_roles
The user must have at least one role named by operator_roles on a project in
order to create, delete and modify containers and objects and to set and read
privileged headers such as ACLs. If there are several reseller prefix items,
you can prefix the parameter so it applies only to those accounts (for example
the parameter SERVICE_operator_roles applies to the /v1/SERVICE_<project> path).
If you omit the prefix, the option applies to all reseller prefix items. For the
blank/empty prefix, prefix with '' (do not put underscore after the two single
quote characters).
reseller_admin_role
The reseller admin role has the ability to create and delete accounts.
allow_overrides
This allows middleware higher in the WSGI pipeline to override auth processing,
useful for middleware such as tempurl and formpost. If you know you're not going
to use such middleware and you want a bit of extra security, you can set this to
false.
service_roles
If the service_roles parameter is present, an X-Service-Token must be present in
the request that when validated, grants at least one role listed in the
parameter. The X-Service-Token may be scoped to any project. If there are
several reseller prefix items, you can prefix the parameter so it applies only
to those accounts (for example the parameter SERVICE_service_roles applies to
the /v1/SERVICE_<project> path). If you omit the prefix, the option applies to
all reseller prefix items. For the blank/empty prefix, prefix with '' (do not
put underscore after the two single quote characters). By default, no
service_roles are required.
default_domain_id
For backwards compatibility, keystoneauth will match names in cross-tenant
access control lists (ACLs) when both the requesting user and the tenant are in
the default domain i.e the domain to which existing tenants are migrated. The
default_domain_id value configured here should be the same as the value used
during migration of tenants to keystone domains.
allow_names_in_acls
For a new installation, or an installation in which keystone projects may move
between domains, you should disable backwards compatible name matching in ACLs
by setting allow_names_in_acls to false:
[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. This is normally egg:swift#memcache.
set log_name
Label used when logging. The default is memcache.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
memcache_max_connections
Sets the maximum number of connections to each memcached server per worker.
memcache_servers
If not set in the configuration file, the value for memcache_servers will be
read from /etc/swift/memcache.conf (see memcache.conf-sample) or lacking that
file, it will default to 127.0.0.1:11211. You can specify multiple servers
separated with commas, as in: 10.1.2.3:11211,10.1.2.4:11211. (IPv6 addresses
must follow rfc3986 section-3.2.2, i.e. [::1]:11211)
memcache_serialization_support
This sets how memcache values are serialized and deserialized:
0 = older, insecure pickle serialization
1 = json serialization but pickles can still be read (still insecure)
2 = json serialization only (secure and the default)
To avoid an instant full cache flush, existing installations should upgrade with
0, then set to 1 and reload, then after some time (24 hours) set to 2 and
reload. In the future, the ability to use pickle serialization will be removed.
If not set in the configuration file, the value for
memcache_serialization_support will be read from /etc/swift/memcache.conf if it
exists (see memcache.conf-sample). Otherwise, the default value as indicated
above will be used.
[filter:ratelimit]
Rate limits requests on both an Account and Container level. Limits are configurable.
use Entry point for paste.deploy for the ratelimit middleware. This is the reference
to the installed python egg. This is normally egg:swift#ratelimit.
set log_name
Label used when logging. The default is ratelimit.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
clock_accuracy
This should represent how accurate the proxy servers' system clocks are with
each other. 1000 means that all the proxies' clock are accurate to each other
within 1 millisecond. No ratelimit should be higher than the clock accuracy.
The default is 1000.
max_sleep_time_seconds
App will immediately return a 498 response if the necessary sleep time ever
exceeds the given max_sleep_time_seconds. The default is 60 seconds.
log_sleep_time_seconds
To allow visibility into rate limiting set this value > 0 and all sleeps greater
than the number will be logged. If set to 0 means disabled. The default is 0.
rate_buffer_seconds
Number of seconds the rate counter can drop and be allowed to catch up (at a
faster than listed rate). A larger number will result in larger spikes in rate
but better average accuracy. The default is 5.
account_ratelimit
If set, will limit PUT and DELETE requests to /account_name/container_name.
Number is in requests per second. If set to 0 means disabled. The default is 0.
container_ratelimit_size
When set with container_limit_x = r: for containers of size x, limit requests
per second to r. Will limit PUT, DELETE, and POST requests to /a/c/o. The
default is ''.
container_listing_ratelimit_size
Similarly to the above container-level write limits, the following will limit
container GET (listing) requests.
[filter:domain_remap]
Middleware that translates container and account parts of a domain to path parameters that
the proxy server understands. The container.account.storageurl/object gets translated to
container.account.storageurl/path_root/account/container/object and
account.storageurl/path_root/container/object gets translated to
account.storageurl/path_root/account/container/object
use Entry point for paste.deploy for the domain_remap middleware. This is the
reference to the installed python egg. This is normally egg:swift#domain_remap.
set log_name
Label used when logging. The default is domain_remap.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
storage_domain
The domain to be used by the middleware.
path_root
The path root value for the storage URL. The default is v1.
reseller_prefixes
Browsers can convert a host header to lowercase, so check that reseller prefix
on the account is the correct case. This is done by comparing the items in the
reseller_prefixes config option to the found prefix. If they match except for
case, the item from reseller_prefixes will be used instead of the found reseller
prefix. When none match, the default reseller prefix is used. When no default
reseller prefix is configured, any request with an account prefix not in that
list will be ignored by this middleware. Defaults to 'AUTH'.
default_reseller_prefix
The default reseller prefix. This is used when none of the configured
reseller_prefixes match. When not set, no reseller prefix is added.
[filter:catch_errors]
use Entry point for paste.deploy for the catch_errors middleware. This is the
reference to the installed python egg. This is normally egg:swift#catch_errors.
set log_name
Label used when logging. The default is catch_errors.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
[filter:cname_lookup]
Note: this middleware requires python-dnspython
use Entry point for paste.deploy for the cname_lookup middleware. This is the
reference to the installed python egg. This is normally egg:swift#cname_lookup.
set log_name
Label used when logging. The default is cname_lookup.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
storage_domain
The domain to be used by the middleware.
lookup_depth
How deep in the CNAME chain to look for something that matches the storage
domain. The default is 1.
[filter:staticweb]
Note: Put staticweb just after your auth filter(s) in the pipeline
use Entry point for paste.deploy for the staticweb middleware. This is the reference
to the installed python egg. This is normally egg:swift#staticweb.
set log_name
Label used when logging. The default is staticweb.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
[filter:tempurl]
Note: Put tempurl before slo, dlo, and your auth filter(s) in the pipeline
use Entry point for paste.deploy for the tempurl middleware. This is the reference
to the installed python egg. This is normally egg:swift#tempurl.
methods
The methods allowed with Temp URLs. The default is 'GET HEAD PUT POST DELETE'.
incoming_remove_headers
The headers to remove from incoming requests. Simply a whitespace delimited list
of header names and names can optionally end with '*' to indicate a prefix
match. incoming_allow_headers is a list of exceptions to these removals.
incoming_allow_headers
The headers allowed as exceptions to incoming_remove_headers. Simply a
whitespace delimited list of header names and names can optionally end with '*'
to indicate a prefix match.
outgoing_remove_headers
The headers to remove from outgoing responses. Simply a whitespace delimited
list of header names and names can optionally end with '*' to indicate a prefix
match. outgoing_allow_headers is a list of exceptions to these removals.
outgoing_allow_headers
The headers allowed as exceptions to outgoing_remove_headers. Simply a
whitespace delimited list of header names and names can optionally end with '*'
to indicate a prefix match.
[filter:formpost]
Note: Put formpost just before your auth filter(s) in the pipeline
use Entry point for paste.deploy for the formpost middleware. This is the reference
to the installed python egg. This is normally egg:swift#formpost.
[filter:name_check]
Note: Just needs to be placed before the proxy-server in the pipeline.
use Entry point for paste.deploy for the name_check middleware. This is the
reference to the installed python egg. This is normally egg:swift#name_check.
forbidden_chars
Characters that will not be allowed in a name. The default is '"`<>.
maximum_length
Maximum number of characters that can be in the name. The default is 255.
forbidden_regexp
Python regular expressions of substrings that will not be allowed in a name. The
default is /./|/../|/.$|/..$.
[filter:list-endpoints]
use Entry point for paste.deploy for the list_endpoints middleware. This is the
reference to the installed python egg. This is normally
egg:swift#list_endpoints.
list_endpoints_path
The default is '/endpoints/'.
[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.
access_log_name
Label used when logging. The default is proxy-server.
access_log_facility
Syslog log facility. The default is LOG_LOCAL0.
access_log_level
Logging level. The default is INFO.
access_log_address
Default is /dev/log.
access_log_udp_host
If set, access_log_udp_host will override access_log_address. Default is unset.
access_log_udp_port
Default is 514.
access_log_statsd_host
You can use log_statsd_* from [DEFAULT], or override them here. 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.
access_log_statsd_port
Default is 8125.
access_log_statsd_default_sample_rate
Default is 1.
access_log_statsd_sample_rate_factor
The default is 1.
access_log_statsd_metric_prefix
Default is "" (empty-string)
access_log_headers
Default is False.
access_log_headers_only
If access_log_headers is True and access_log_headers_only is set only these
headers are logged. Multiple headers can be defined as comma separated list like
this: access_log_headers_only = Host, X-Object-Meta-Mtime
reveal_sensitive_prefix
By default, the X-Auth-Token is logged. To obscure the value, set
reveal_sensitive_prefix to the number of characters to log. For example, if set
to 12, only the first 12 characters of the token appear in the log. An
unauthorized access of the log file won't allow unauthorized usage of the token.
However, the first 12 or so characters is unique enough that you can trace/debug
token usage. Set to 0 to suppress the token completely (replaced by '...' in the
log). The default is 16 chars. Note: reveal_sensitive_prefix will not affect
the value logged with access_log_headers=True.
log_statsd_valid_http_methods
What HTTP methods are allowed for StatsD logging (comma-sep); request methods
not in this list will have "BAD_METHOD" for the <verb> portion of the metric.
Default is "GET,HEAD,POST,PUT,DELETE,COPY,OPTIONS".
[filter:bulk]
Note: Put before both ratelimit and auth in the pipeline.
use Entry point for paste.deploy for the bulk middleware. This is the reference to
the installed python egg. This is normally egg:swift#bulk.
max_containers_per_extraction
The default is 10000.
max_failed_extractions
The default is 1000.
max_deletes_per_request
The default is 10000.
max_failed_deletes
The default is 1000.
In order to keep a connection active during a potentially long bulk request,
Swift may return whitespace prepended to the actual response body. This
whitespace will be yielded no more than every yield_frequency seconds. The
default is 10.
yield_frequency
delete_container_retry_count
Note: This parameter is used during a bulk delete of objects and their
container. This would frequently fail because it is very likely that all
replicated objects have not been deleted by the time the middleware got a
successful response. It can be configured the number of retries. And the number
of seconds to wait between each retry will be 1.5**retry The default is 0.
[filter:slo]
Note: Put after auth and staticweb in the pipeline.
use Entry point for paste.deploy for the slo middleware. This is the reference to
the installed python egg. This is normally egg:swift#slo.
max_manifest_segments
The default is 1000.
max_manifest_size
The default is 2097152.
min_segment_size
The default is 1048576
rate_limit_after_segment
Start rate-limiting object segments after the Nth segment of a segmented object.
The default is 10 segments.
rate_limit_segments_per_sec
Once segment rate-limiting kicks in for an object, limit segments served to N
per second. The default is 1.
max_get_time
Time limit on GET requests (seconds). The default is 86400.
[filter:dlo]
Note: Put after auth and staticweb in the pipeline. If you don't put it in the pipeline,
it will be inserted for you.
use Entry point for paste.deploy for the dlo middleware. This is the reference to
the installed python egg. This is normally egg:swift#dlo.
rate_limit_after_segment
Start rate-limiting object segments after the Nth segment of a segmented object.
The default is 10 segments.
rate_limit_segments_per_sec
Once segment rate-limiting kicks in for an object, limit segments served to N
per second. The default is 1.
max_get_time
Time limit on GET requests (seconds). The default is 86400.
[filter:container-quotas]
Note: Put after auth in the pipeline.
use Entry point for paste.deploy for the container_quotas middleware. This is the
reference to the installed python egg. This is normally
egg:swift#container_quotas.
[filter:account-quotas]
Note: Put after auth in the pipeline.
use Entry point for paste.deploy for the account_quotas middleware. This is the
reference to the installed python egg. This is normally
egg:swift#account_quotas.
[filter:gatekeeper]
Note: this middleware requires python-dnspython
use Entry point for paste.deploy for the gatekeeper middleware. This is the
reference to the installed python egg. This is normally egg:swift#gatekeeper.
set log_name
Label used when logging. The default is gatekeeper.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
set log_headers
Enables the ability to log request headers. The default is False.
[filter:container_sync]
Note: this middleware requires python-dnspython
use Entry point for paste.deploy for the container_sync middleware. This is the
reference to the installed python egg. This is normally
egg:swift#container_sync.
allow_full_urls
Set this to false if you want to disallow any full url values to be set for any
new X-Container-Sync-To headers. This will keep any new full urls from coming
in, but won't change any existing values already in the cluster. Updating those
will have to be done manually, as knowing what the true realm endpoint should be
cannot always be guessed. The default is true.
current
Set this to specify this clusters //realm/cluster as "current" in /info
[filter:xprofile]
Note: Put it at the beginning of the pipeline to profile all middleware. But it is safer
to put this after healthcheck.
use Entry point for paste.deploy for the xprofile middleware. This is the reference
to the installed python egg. This is normally egg:swift#xprofile.
profile_module
This option enable you to switch profilers which should inherit from python
standard profiler. Currently the supported value can be 'cProfile',
'eventlet.green.profile' etc.
log_filename_prefix
This prefix will be used to combine process ID and timestamp to name the profile
data file. Make sure the executing user has permission to write into this path
(missing path segments will be created, if necessary). If you enable profiling
in more than one type of daemon, you must override it with an unique value like,
the default is /var/log/swift/profile/account.profile.
dump_interval
The profile data will be dumped to local disk based on above naming rule in this
interval. The default is 5.0.
dump_timestamp
Be careful, this option will enable profiler to dump data into the file with
time stamp which means there will be lots of files piled up in the directory.
The default is false
path This is the path of the URL to access the mini web UI. The default is
__profile__.
flush_at_shutdown
Clear the data when the wsgi server shutdown. The default is false.
unwind Unwind the iterator of applications. Default is false.
[filter:versioned_writes]
Note: Put after slo, dlo in the pipeline. If you don't put it in the pipeline, it will be
inserted automatically.
use Entry point for paste.deploy for the versioned_writes middleware. This is the
reference to the installed python egg. This is normally
egg:swift#versioned_writes.
allow_versioned_writes
Enables using versioned writes middleware and exposing configuration settings
via HTTP GET /info. WARNING: Setting this option bypasses the "allow_versions"
option in the container configuration file, which will be eventually deprecated.
See documentation for more details.
APP SECTION
This is indicated by section name [app:proxy-server]. Below are the parameters that are
acceptable within this section.
use Entry point for paste.deploy for the proxy server. This is the reference to the
installed python egg. This is normally egg:swift#proxy.
set log_name
Label used when logging. The default is proxy-server.
set log_facility
Syslog log facility. The default is LOG_LOCAL0.
set log_level
Logging level. The default is INFO.
set log_address
Logging address. The default is /dev/log.
log_handoffs
Log when handoff locations are used. Default is True.
recheck_account_existence
Cache timeout in seconds to send memcached for account existence. The default is 60
seconds.
recheck_container_existence
Cache timeout in seconds to send memcached for container existence. The default is
60 seconds.
object_chunk_size
Chunk size to read from object servers. The default is 8192.
client_chunk_size
Chunk size to read from clients. The default is 8192.
node_timeout
Request timeout to external services. The default is 10 seconds.
recoverable_node_timeout
How long the proxy server will wait for an initial response and to read a chunk of
data from the object servers while serving GET / HEAD requests. Timeouts from
these requests can be recovered from so setting this to something lower than
node_timeout would provide quicker error recovery while allowing for a longer
timeout for non-recoverable requests (PUTs). Defaults to node_timeout, should be
overridden if node_timeout is set to a high number to prevent client timeouts from
firing before the proxy server has a chance to retry.
conn_timeout
Connection timeout to external services. The default is 0.5 seconds.
post_quorum_timeout
How long to wait for requests to finish after a quorum has been established. The
default is 0.5 seconds.
error_suppression_interval
Time in seconds that must elapse since the last error for a node to be considered
no longer error limited. The default is 60 seconds.
error_suppression_limit
Error count to consider a node error limited. The default is 10.
allow_account_management
Whether account PUTs and DELETEs are even callable. If set to 'true' any authorized
user may create and delete accounts; if 'false' no one, even authorized, can. The
default is false.
object_post_as_copy
Set object_post_as_copy = false to turn on fast posts where only the metadata
changes are stored as new and the original data file is kept in place. This makes
for quicker posts. The default is True.
account_autocreate
If set to 'true' authorized accounts that do not yet exist within the Swift cluster
will be automatically created. The default is set to false.
auto_create_account_prefix
Prefix used when automatically creating accounts. The default is '.'.
max_containers_per_account
If set to a positive value, trying to create a container when the account already
has at least this maximum containers will result in a 403 Forbidden. Note: This is
a soft limit, meaning a user might exceed the cap for recheck_account_existence
before the 403s kick in.
max_containers_whitelist
This is a comma separated list of account hashes that ignore the
max_containers_per_account cap.
deny_host_headers
Comma separated list of Host headers to which the proxy will deny requests. The
default is empty.
put_queue_depth
Depth of the proxy put queue. The default is 10.
sorting_method
Storage nodes can be chosen at random (shuffle - default), by using timing
measurements (timing), or by using an explicit match (affinity). Using timing
measurements may allow for lower overall latency, while using affinity allows for
finer control. In both the timing and affinity cases, equally-sorting nodes are
still randomly chosen to spread load. The valid values for sorting_method are
"affinity", "shuffle", and "timing".
timing_expiry
If the "timing" sorting_method is used, the timings will only be valid for the
number of seconds configured by timing_expiry. The default is 300.
request_node_count
Set to the number of nodes to contact for a normal request. You can use '*
replicas' at the end to have it use the number given times the number of replicas
for the ring being used for the request. The default is '2 * replicas'.
read_affinity
Which backend servers to prefer on reads. Format is r<N> for region N or r<N>z<M>
for region N, zone M. The value after the equals is the priority; lower numbers are
higher priority. Default is empty, meaning no preference. Example: first read
from region 1 zone 1, then region 1 zone 2, then anything in region 2, then
everything else: read_affinity = r1z1=100, r1z2=200, r2=300
write_affinity
Which backend servers to prefer on writes. Format is r<N> for region N or r<N>z<M>
for region N, zone M. If this is set, then when handling an object PUT request,
some number (see setting write_affinity_node_count) of local backend servers will
be tried before any nonlocal ones. Default is empty, meaning no preference.
Example: try to write to regions 1 and 2 before writing to any other nodes:
write_affinity = r1, r2
write_affinity_node_count
The number of local (as governed by the write_affinity setting) nodes to attempt to
contact first, before any non-local ones. You can use '* replicas' at the end to
have it use the number given times the number of replicas for the ring being used
for the request. The default is '2 * replicas'.
swift_owner_headers
These are the headers whose values will only be shown to swift_owners. The exact
definition of a swift_owner is up to the auth system in use, but usually indicates
administrative responsibilities. The default is 'x-container-read, x-container-
write, x-container-sync-key, x-container-sync-to, x-account-meta-temp-url-key, x-
account-meta-temp-url-key-2, x-container-meta-temp-url-key, x-container-meta-temp-
url-key-2, x-account-access-control'.
DOCUMENTATION
More in depth documentation about the swift-proxy-server 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(1)