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+.\"/*
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+.\" * Copyright (C) 2010 Red Hat, Inc.
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+.\" *
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+.\" * All rights reserved.
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+.\" *
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+.\" * Author: Angus Salkeld <asalkeld@redhat.com>
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+.\" *
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+.\" * This software licensed under BSD license, the text of which follows:
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+.\" *
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+.\" * Redistribution and use in source and binary forms, with or without
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+.\" * modification, are permitted provided that the following conditions are met:
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+.\" *
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+.\" * - Redistributions of source code must retain the above copyright notice,
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+.\" * this list of conditions and the following disclaimer.
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+.\" * - Redistributions in binary form must reproduce the above copyright notice,
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+.\" * this list of conditions and the following disclaimer in the documentation
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+.\" * and/or other materials provided with the distribution.
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+.\" * - Neither the name of the MontaVista Software, Inc. nor the names of its
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+.\" * contributors may be used to endorse or promote products derived from this
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+.\" * software without specific prior written permission.
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+.\" *
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+.\" * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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+.\" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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+.\" * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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+.\" * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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+.\" * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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+.\" * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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+.\" * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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+.\" * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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+.\" * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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+.\" * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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+.\" * THE POSSIBILITY OF SUCH DAMAGE.
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+.\" */
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+.TH COROSYNC-KEYGEN 8 2010-05-30
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+.SH NAME
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+corosync-keygen \- Generate an authentication key for Corosync.
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+.SH SYNOPSIS
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+.B "corosync-keygen"
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+.SH DESCRIPTION
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+
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+If you want to configure corosync to use cryptographic techniques to ensure authenticity
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+.br
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+and privacy of the messages, you will need to generate a private key.
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+.PP
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+.B corosync-keygen
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+creates this key and writes it to /etc/corosync/authkey.
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+.PP
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+This private key must be copied to every processor in the cluster. If the
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+.br
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+private key isn't the same for every node, those nodes with nonmatching private
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+.br
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+keys will not be able to join the same configuration.
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+.PP
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+Copy the key to some security transportable storage or use ssh to transmit the
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+.br
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+key from node to node. Then install the key with the command:
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+.PP
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+unix#: install -D --group=0 --owner=0 --mode=0400 /path_to_authkey/authkey /etc/corosync/authkey
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+.PP
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+If a message "Invalid digest" appears from the corosync executive, the keys
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+.br
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+are not consistent between processors.
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+.PP
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+.B Note: corosync-keygen
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+will ask for user input to assist in generating entropy.
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+.SH EXAMPLES
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+.TP
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+Generate the key.
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+.PP
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+$ corosync-keygen
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+.br
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+Corosync Cluster Engine Authentication key generator.
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+.br
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+Gathering 1024 bits for key from /dev/random.
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+.br
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+Press keys on your keyboard to generate entropy.
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+.br
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+.SH SEE ALSO
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+.BR corosync_overview (8),
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+.BR corosync.conf (5),
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+.SH AUTHOR
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+Angus Salkeld
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+.PP
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Angus Salkeld