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174 lines
4.7 KiB
Groff
174 lines
4.7 KiB
Groff
.TH "MKCEPHFS" "8" "April 11, 2012" "dev" "Ceph"
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.SH NAME
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mkcephfs \- create a ceph file system
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.
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.\" Man page generated from reStructeredText.
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.
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.SH SYNOPSIS
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.nf
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\fBmkcephfs\fP [ \-c \fIceph.conf\fP ] [ \-\-mkbtrfs ] [ \-a, \-\-all\-hosts [ \-k
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\fI/path/to/admin.keyring\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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\fBmkcephfs\fP is used to create an empty Ceph file system, possibly
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spanning multiple hosts. The ceph.conf file describes the composition
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of the entire Ceph cluster, including which hosts are participating,
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which daemons run where, and which paths are used to store file system
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data or metadata.
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.sp
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The mkcephfs tool can be used in two ways. If \-a is used, it will use
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ssh and scp to connect to remote hosts on your behalf and do the setup
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of the entire cluster. This is the easiest solution, but can also be
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inconvenient (if you don\(aqt have ssh to connect without prompting for
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passwords) or slow (if you have a large cluster).
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.sp
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Alternatively, you can run each setup phase manually. First, you need
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to prepare a monmap that will be shared by each node:
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.sp
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.nf
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.ft C
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# prepare
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master# mkdir /tmp/foo
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master# mkcephfs \-c /etc/ceph/ceph.conf \e
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\-\-prepare\-monmap \-d /tmp/foo
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.ft P
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.fi
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.sp
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Share the \fB/tmp/foo\fP directory with other nodes in whatever way is
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convenient for you. On each OSD and MDS node:
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.sp
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.nf
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.ft C
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osdnode# mkcephfs \-\-init\-local\-daemons osd \-d /tmp/foo
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mdsnode# mkcephfs \-\-init\-local\-daemons mds \-d /tmp/foo
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.ft P
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.fi
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.sp
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Collect the contents of the /tmp/foo directories back onto a single
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node, and then:
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.sp
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.nf
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.ft C
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master# mkcephfs \-\-prepare\-mon \-d /tmp/foo
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.ft P
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.fi
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.sp
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Finally, distribute \fB/tmp/foo\fP to all monitor nodes and, on each of
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those nodes:
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.sp
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.nf
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.ft C
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monnode# mkcephfs \-\-init\-local\-daemons mon \-d /tmp/foo
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.ft P
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.fi
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.SH OPTIONS
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.INDENT 0.0
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.TP
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.B \-a, \-\-allhosts
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Performs the necessary initialization steps on all hosts in the
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cluster, executing commands via SSH.
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.UNINDENT
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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 the given conf file instead of the default \fB/etc/ceph/ceph.conf\fP.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-k /path/to/keyring
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When \fB\-a\fP is used, we can specify a location to copy the
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client.admin keyring, which is used to administer the cluster. The
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default is \fB/etc/ceph/keyring\fP (or whatever is specified in the
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config file).
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-mkbtrfs
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Create and mount the any btrfs file systems specified in the
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ceph.conf for OSD data storage using mkfs.btrfs. The "btrfs devs"
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and (if it differs from "osd data") "btrfs path" options must be
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defined.
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.sp
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\fBNOTE\fP Btrfs is still considered experimental. This option
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can ease some configuration pain, but is the use of btrfs is not
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required when \fBosd data\fP directories are mounted manually by the
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adminstrator.
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.sp
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\fBNOTE\fP This option is deprecated and will be removed in a future
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release.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-no\-copy\-conf
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By default, mkcephfs with \-a will copy the new configuration to
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/etc/ceph/ceph.conf on each node in the cluster. This option
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disables that behavior.
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.UNINDENT
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.SH SUBCOMMANDS
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.sp
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The sub\-commands performed during cluster setup can be run individually with
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.INDENT 0.0
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.TP
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.B \-\-prepare\-monmap \-d dir \-c ceph.conf
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Create an initial monmap with a random fsid/uuid and store it and
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the ceph.conf in dir.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-init\-local\-daemons type \-d dir
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Initialize any daemons of type type on the local host using the
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monmap in dir. For types osd and mds, the resulting authentication
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keys will be placed in dir. For type mon, the initial data files
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generated by \-\-prepare\-mon (below) are expected in dir.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-prepare\-mon \-d dir
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Prepare the initial monitor data based on the monmap, OSD, and MDS
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authentication keys collected in dir, and put the result in dir.
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.UNINDENT
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.SH AVAILABILITY
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.sp
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\fBmkcephfs\fP is part of the Ceph distributed file system. Please refer
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to the Ceph wiki at \fI\%http://ceph.newdream.net/wiki\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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\fBmonmaptool\fP(8),
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\fBosdmaptool\fP(8),
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\fBcrushtool\fP(8)
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.SH COPYRIGHT
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2011, New Dream Network
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.\" Generated by docutils manpage writer.
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.\"
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