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111 lines
4.2 KiB
Groff
111 lines
4.2 KiB
Groff
.\" Man page generated from reStructuredText.
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.TH BORG-SERVE 1 "2017-11-25" "" "borg backup tool"
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.SH NAME
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borg-serve \- Start in server mode. This command is usually not used manually.
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.
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. RE
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..
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.SH SYNOPSIS
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.sp
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borg [common options] serve [options]
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.SH DESCRIPTION
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.sp
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This command starts a repository server process. This command is usually not used manually.
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.SH OPTIONS
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.sp
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See \fIborg\-common(1)\fP for common options of Borg commands.
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.SS optional arguments
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.INDENT 0.0
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.TP
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.BI \-\-restrict\-to\-path \ PATH
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restrict repository access to PATH. Can be specified multiple times to allow the client access to several directories. Access to all sub\-directories is granted implicitly; PATH doesn\(aqt need to directly point to a repository.
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.TP
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.BI \-\-restrict\-to\-repository \ PATH
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restrict repository access. Only the repository located at PATH (no sub\-directories are considered) is accessible. Can be specified multiple times to allow the client access to several repositories. Unlike \fB\-\-restrict\-to\-path\fP sub\-directories are not accessible; PATH needs to directly point at a repository location. PATH may be an empty directory or the last element of PATH may not exist, in which case the client may initialize a repository there.
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.TP
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.B \-\-append\-only
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only allow appending to repository segment files
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.TP
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.BI \-\-storage\-quota \ QUOTA
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Override storage quota of the repository (e.g. 5G, 1.5T). When a new repository is initialized, sets the storage quota on the new repository as well. Default: no quota.
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.UNINDENT
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.SH EXAMPLES
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.sp
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borg serve has special support for ssh forced commands (see \fBauthorized_keys\fP
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example below): it will detect that you use such a forced command and extract
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the value of the \fB\-\-restrict\-to\-path\fP option(s).
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.sp
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It will then parse the original command that came from the client, makes sure
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that it is also \fBborg serve\fP and enforce path restriction(s) as given by the
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forced command. That way, other options given by the client (like \fB\-\-info\fP or
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\fB\-\-umask\fP) are preserved (and are not fixed by the forced command).
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.sp
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Environment variables (such as BORG_HOSTNAME_IS_UNIQUE) contained in the original
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command sent by the client are \fInot\fP interpreted, but ignored. If BORG_XXX environment
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variables should be set on the \fBborg serve\fP side, then these must be set in system\-specific
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locations like \fB/etc/environment\fP or in the forced command itself (example below).
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.INDENT 0.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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# Allow an SSH keypair to only run borg, and only have access to /path/to/repo.
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# Use key options to disable unneeded and potentially dangerous SSH functionality.
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# This will help to secure an automated remote backup system.
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$ cat ~/.ssh/authorized_keys
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command="borg serve \-\-restrict\-to\-path /path/to/repo",restrict ssh\-rsa AAAAB3[...]
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# Set a BORG_XXX environment variable on the "borg serve" side
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$ cat ~/.ssh/authorized_keys
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command="export BORG_XXX=value; borg serve [...]",restrict ssh\-rsa [...]
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.sp
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\fBNOTE:\fP
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.INDENT 0.0
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.INDENT 3.5
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The examples above use the \fBrestrict\fP directive. This does automatically
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block potential dangerous ssh features, even when they are added in a future
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update. Thus, this option should be preferred.
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.sp
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If you\(aqre using openssh\-server < 7.2, however, you have to explicitly specify
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the ssh features to restrict and cannot simply use the restrict option as it
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has been introduced in v7.2. We recommend to use
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\fBno\-port\-forwarding,no\-X11\-forwarding,no\-pty,no\-agent\-forwarding,no\-user\-rc\fP
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in this case.
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.UNINDENT
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.UNINDENT
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.SH SEE ALSO
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.sp
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\fIborg\-common(1)\fP
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.SH AUTHOR
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The Borg Collective
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.\" Generated by docutils manpage writer.
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.
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