openstack/swift
Code Issues Proposed changes
97f79b9dda
swift/doc/manpages/object-server.conf.5
Darrell Bishop b8e3e9e1c2 Allow optional, temporary healthcheck failure. 
A deployer may want to remove a Swift node from a load balancer for
maintenance or upgrade.  This patch provides an optional mechanism for
this.  The healthcheck filter config can specify "disable_path" which is
a filesystem path.  If a file is present at that location, the
healthcheck middleware returns a 503 with a body of "DISABLED BY FILE".

So a deployer can configure "disable_path" and then touch that
filesystem path, wait for the proxy to be removed from the load balancer
pool, perform maintenance/upgrade, and then remove the "disable_path"
file.

Also cleaned up the conf file man pages a bit.

Change-Id: I1759c78c74910a54c720f298d4d8e6fa57a4dab4
2012-12-04 09:14:27 -08:00

275 lines
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.\"
.\" Author: Joao Marcelo Martins <marcelo.martins@rackspace.com> or <btorch@gmail.com>
.\" Copyright (c) 2010-2012 OpenStack, LLC.
.\"
.\" Licensed under the Apache License, Version 2.0 (the "License");
.\" you may not use this file except in compliance with the License.
.\" You may obtain a copy of the License at
.\"
.\" http://www.apache.org/licenses/LICENSE-2.0
.\"
.\" Unless required by applicable law or agreed to in writing, software
.\" distributed under the License is distributed on an "AS IS" BASIS,
.\" WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
.\" implied.
.\" See the License for the specific language governing permissions and
.\" limitations under the License.
.\"
.TH object-server.conf 5 "8/26/2011" "Linux" "OpenStack Swift"
.SH NAME
.LP
.B object-server.conf
\- configuration file for the openstack-swift object server
.SH SYNOPSIS
.LP
.B object-server.conf
.SH DESCRIPTION
.PP
This is the configuration file used by the object server and other object
background services, such as; replicator, updater and auditor.
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
\fIhttp://pythonpaste.org/deploy/#config-format\fR
.SH GLOBAL SECTION
.PD 1
.RS 0
This is indicated by section named [DEFAULT]. Below are the parameters that
are acceptable within this section.
.IP "\fBbind_ip\fR"
IP address the object server should bind to. The default is 0.0.0.0 which will make
it bind to all available addresses.
.IP "\fBbind_port\fR"
TCP port the object server should bind to. The default is 6000.
.IP \fBbacklog\fR
TCP backlog. Maximum number of allowed pending connections. The default value is 4096.
.IP \fBworkers\fR
Number of object server workers to fork. The default is 1.
.IP \fBuser\fR
The system user that the object server will run as. The default is swift.
.IP \fBswift_dir\fR
Swift configuration directory. The default is /etc/swift.
.IP \fBdevices\fR
Parent directory or where devices are mounted. Default is /srv/node.
.IP \fBmount_check\fR
Whether or not check if the devices are mounted to prevent accidentally writing to
the root device. The default is set to true.
.IP \fBlog_name\fR
Label used when logging. The default is swift.
.IP \fBlog_facility\fR
Syslog log facility. The default is LOG_LOCAL0.
.IP \fBlog_level\fR
Logging level. The default is INFO.
.IP \fBlog_address\fR
Logging address. The default is /dev/log.
.RE
.PD
.SH PIPELINE SECTION
.PD 1
.RS 0
This is indicated by section name [pipeline:main]. Below are the parameters that
are acceptable within this section.
.IP "\fBpipeline\fR"
It is used when you need to apply a number of filters. It is a list of filters
ended by an application. The normal pipeline is "healthcheck recon
object-server".
.RE
.PD
.SH APP SECTION
.PD 1
.RS 0
This is indicated by section name [app:object-server]. Below are the parameters
that are acceptable within this section.
.IP "\fBuse\fR"
Entry point for paste.deploy for the object server. This is the reference to the installed python egg.
This is normally \fBegg:swift#object\fR.
.IP "\fBset log_name\fR
Label used when logging. The default is object-server.
.IP "\fBset log_facility\fR
Syslog log facility. The default is LOG_LOCAL0.
.IP "\fB set log_level\fR
Logging level. The default is INFO.
.IP "\fB set log_requests\fR
Enables request logging. The default is True.
.IP "\fB set log_address\fR
Logging address. The default is /dev/log.
.IP \fBnode_timeout\fR
Request timeout to external services. The default is 3 seconds.
.IP \fBconn_timeout\fR
Connection timeout to external services. The default is 0.5 seconds.
.RE
.PD
.SH FILTER SECTION
.PD 1
.RS 0
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.
.IP "\fB[filter:healthcheck]\fR"
.RE
.RS 3
.IP "\fBuse\fR"
Entry point for paste.deploy for the healthcheck middleware. This is the reference to the installed python egg.
This is normally \fBegg:swift#healthcheck\fR.
.IP "\fBdisable_path\fR"
An optional filesystem path which, if present, will cause the healthcheck
URL to return "503 Service Unavailable" with a body of "DISABLED BY FILE".
.RE
.RS 0
.IP "\fB[filter:recon]\fR"
.RE
.RS 3
.IP "\fBuse\fR"
Entry point for paste.deploy for the recon middleware. This is the reference to the installed python egg.
This is normally \fBegg:swift#recon\fR.
.IP "\fBrecon_cache_path\fR"
The recon_cache_path simply sets the directory where stats for a few items will be stored.
Depending on the method of deployment you may need to create this directory manually
and ensure that swift has read/write. The default is /var/cache/swift.
.RE
.PD
.SH ADDITIONAL SECTIONS
.PD 1
.RS 0
The following sections are used by other swift-object services, such as replicator,
updater, auditor.
.IP "\fB[object-replicator]\fR"
.RE
.RS 3
.IP \fBlog_name\fR
Label used when logging. The default is object-replicator.
.IP \fBlog_facility\fR
Syslog log facility. The default is LOG_LOCAL0.
.IP \fBlog_level\fR
Logging level. The default is INFO.
.IP \fBlog_address\fR
Logging address. The default is /dev/log.
.IP \fBvm_test_mode\fR
Indicates that you are using a VM environment. The default is no.
.IP \fBdaemonize\fR
Whether or not to run replication as a daemon. The default is yes.
.IP \fBrun_pause\fR
Time in seconds to wait between replication passes. The default is 30.
.IP \fBconcurrency\fR
Number of replication workers to spawn. The default is 1.
.IP \fBstats_interval\fR
Interval in seconds between logging replication statistics. The default is 300.
.IP \fBrsync_timeout\fR
Max duration of a partition rsync. The default is 900 seconds.
.IP \fBrsync_io_timeout\fR
Passed to rsync for I/O OP timeout. The default is 30 seconds.
.IP \fBhttp_timeout\fR
Max duration of an HTTP request. The default is 60 seconds.
.IP \fBlockup_timeout\fR
Attempts to kill all workers if nothing replicates for lockup_timeout seconds. The
default is 1800 seconds.
.IP \fBreclaim_age\fR
Time elapsed in seconds before an object can be reclaimed. The default is
604800 seconds.
.IP \fBrecon_enable\fR
Enable logging of replication stats for recon. The default is on.
.IP "\fBrecon_cache_path\fR"
The recon_cache_path simply sets the directory where stats for a few items will be stored.
Depending on the method of deployment you may need to create this directory manually
and ensure that swift has read/write.The default is /var/cache/swift.
.RE
.RS 0
.IP "\fB[object-updater]\fR"
.RE
.RS 3
.IP \fBlog_name\fR
Label used when logging. The default is object-updater.
.IP \fBlog_facility\fR
Syslog log facility. The default is LOG_LOCAL0.
.IP \fBlog_level\fR
Logging level. The default is INFO.
.IP \fBlog_address\fR
Logging address. The default is /dev/log.
.IP \fBinterval\fR
Minimum time for a pass to take. The default is 300 seconds.
.IP \fBconcurrency\fR
Number of reaper workers to spawn. The default is 1.
.IP \fBnode_timeout\fR
Request timeout to external services. The default is 10 seconds.
.IP \fBconn_timeout\fR
Connection timeout to external services. The default is 0.5 seconds.
.IP \fBslowdown = 0.01\fR
Slowdown will sleep that amount between objects. The default is 0.01 seconds.
.RE
.PD
.RS 0
.IP "\fB[object-auditor]\fR"
.RE
.RS 3
.IP \fBlog_name\fR
Label used when logging. The default is object-auditor.
.IP \fBlog_facility\fR
Syslog log facility. The default is LOG_LOCAL0.
.IP \fBlog_level\fR
Logging level. The default is INFO.
.IP \fBlog_address\fR
Logging address. The default is /dev/log.
.IP \fBfiles_per_second\fR
Maximum files audited per second. Should be tuned according to individual
system specs. 0 is unlimited. The default is 20.
.IP \fBbytes_per_second\fR
Maximum bytes audited per second. Should be tuned according to individual
system specs. 0 is unlimited. The default is 10000000.
.IP \fBlog_time\fR
The default is 3600 seconds.
.IP \fBzero_byte_files_per_second\fR
The default is 50.
.RE
.SH DOCUMENTATION
.LP
More in depth documentation about the swift-object-server and
also Openstack-Swift as a whole can be found at
.BI http://swift.openstack.org/admin_guide.html
and
.BI http://swift.openstack.org
.SH "SEE ALSO"
.BR swift-object-server(1),
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