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188 lines
4.8 KiB
Groff
188 lines
4.8 KiB
Groff
.TH "RADOSGW" "8" "September 27, 2012" "dev" "Ceph"
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.SH NAME
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radosgw \- rados REST gateway
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.
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.\" Man page generated from reStructuredText.
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.
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.SH SYNOPSIS
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.nf
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\fBradosgw\fP
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.fi
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.sp
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.SH DESCRIPTION
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.sp
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\fBradosgw\fP is an HTTP REST gateway for the RADOS object store, a part
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of the Ceph distributed storage system. It is implemented as a FastCGI
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module using libfcgi, and can be used in conjunction with any FastCGI
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capable web server.
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.SH OPTIONS
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.INDENT 0.0
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.TP
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.B \-c ceph.conf, \-\-conf=ceph.conf
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Use \fIceph.conf\fP configuration file instead of the default
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\fB/etc/ceph/ceph.conf\fP to determine monitor addresses during startup.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-m monaddress[:port]
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Connect to specified monitor (instead of looking through
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\fBceph.conf\fP).
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-rgw\-socket\-path=path
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Specify a unix domain socket path.
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.UNINDENT
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.SH CONFIGURATION
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.sp
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Currently it\(aqs the easiest to use the RADOS Gateway with Apache and mod_fastcgi:
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.sp
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.nf
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.ft C
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FastCgiExternalServer /var/www/s3gw.fcgi \-socket /tmp/radosgw.sock
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<VirtualHost *:80>
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ServerName rgw.example1.com
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ServerAlias rgw
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ServerAdmin webmaster@example1.com
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DocumentRoot /var/www
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RewriteEngine On
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RewriteRule ^/([a\-zA\-Z0\-9\-_.]*)([/]?.*) /s3gw.fcgi?page=$1¶ms=$2&%{QUERY_STRING} [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
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<IfModule mod_fastcgi.c>
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<Directory /var/www>
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Options +ExecCGI
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AllowOverride All
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SetHandler fastcgi\-script
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Order allow,deny
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Allow from all
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AuthBasicAuthoritative Off
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</Directory>
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</IfModule>
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AllowEncodedSlashes On
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ServerSignature Off
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</VirtualHost>
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.ft P
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.fi
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.sp
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And the corresponding radosgw script (/var/www/s3gw.fcgi):
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.sp
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.nf
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.ft C
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#!/bin/sh
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exec /usr/bin/radosgw \-c /etc/ceph/ceph.conf \-n client.radosgw.gateway
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.ft P
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.fi
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.sp
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The radosgw daemon is a standalone process which needs a configuration
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section in the ceph.conf The section name should start with
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\(aqclient.radosgw.\(aq as specified in /etc/init.d/radosgw:
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.sp
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.nf
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.ft C
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[client.radosgw.gateway]
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host = gateway
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keyring = /etc/ceph/keyring.radosgw.gateway
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rgw socket path = /tmp/radosgw.sock
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.ft P
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.fi
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.sp
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You will also have to generate a key for the radosgw to use for
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authentication with the cluster:
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.sp
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.nf
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.ft C
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ceph\-authtool \-C \-n client.radosgw.gateway \-\-gen\-key /etc/ceph/keyring.radosgw.gateway
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ceph\-authtool \-n client.radosgw.gateway \-\-cap mon \(aqallow r\(aq \-\-cap osd \(aqallow rwx\(aq /etc/ceph/keyring.radosgw.gateway
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.ft P
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.fi
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.sp
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And add the key to the auth entries:
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.sp
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.nf
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.ft C
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ceph auth add client.radosgw.gateway \-\-in\-file=keyring.radosgw.gateway
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.ft P
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.fi
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.sp
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Now you can start Apache and the radosgw daemon:
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.sp
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.nf
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.ft C
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/etc/init.d/apache2 start
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/etc/init.d/radosgw start
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.ft P
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.fi
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.SH USAGE LOGGING
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.sp
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The \fBradosgw\fP maintains an asynchronous usage log. It accumulates
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statistics about user operations and flushes it periodically. The
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logs can be accessed and managed through \fBradosgw\-admin\fP.
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.sp
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The information that is being logged contains total data transfer,
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total operations, and total successful operations. The data is being
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accounted in an hourly resolution under the bucket owner, unless the
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operation was done on the service (e.g., when listing a bucket) in
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which case it is accounted under the operating user.
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.sp
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Following is an example configuration:
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.sp
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.nf
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.ft C
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[client.radosgw.gateway]
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rgw enable usage log = true
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rgw usage log tick interval = 30
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rgw usage log flush threshold = 1024
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rgw usage max shards = 32
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rgw usage max user shards = 1
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.ft P
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.fi
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.sp
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The total number of shards determines how many total objects hold the
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usage log information. The per\-user number of shards specify how many
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objects hold usage information for a single user. The tick interval
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configures the number of seconds between log flushes, and the flush
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threshold specify how many entries can be kept before resorting to
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synchronous flush.
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.SH AVAILABILITY
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.sp
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\fBradosgw\fP is part of the Ceph distributed file system. Please refer
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to the Ceph documentation at \fI\%http://ceph.com/docs\fP for more
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information.
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.SH SEE ALSO
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.sp
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\fBceph\fP(8)
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\fBradosgw\-admin\fP(8)
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.SH COPYRIGHT
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2012, Inktank Storage, Inc.
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.\" Generated by docutils manpage writer.
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.
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