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README
BSD-3-Clause
Corosync-qdevice
----------------
corosync-qdevice is a daemon running on each node of a cluster. It provides
a configured number of votes to the quorum subsystem based on a third-party
arbitrator's decision. Its primary use is to allow a cluster to sustain more
node failures than standard quorum rules allow. It is recommended for clusters
with an even number of nodes and highly recommended for 2 node clusters.

corosync-qnetd is a daemon running outside of the cluster with the purpose
of providing a vote to the corosync-qdevice model net. It's designed to
support multiple clusters and be almost configuration and state free.
New clusters are handled dynamically and no configuration file exists.
It's also able to run as non-root user - which is recommended.
Connection between the corosync-qdevice model net client can be optionally
configured with TLS client certificate checking. The communication protocol
between server and client is designed to be very simple and allow
backwards compatibility.

Originally both qdevice and qnetd were part of the Corosync codebase
(https://github.com/corosync/corosync) but because it's got quite big we
decided to split it into it's own sub project.

Dependencies
------------
* Corosync >= 2.0
* NSS

Installation
------------
$ ./autogen.sh
$ ./configure
$ make
$ sudo make install
----------------------------------------------------------------------------- The following license applies to every file in this source distribution except for the files git-version-gen, and gitlog-to-changelog. The git* files, which are available under GPLv3 or later, are only used by our release process to generate text file content and are not part of any generated binary. ----------------------------------------------------------------------------- Copyright (c) 2015-2018 Red Hat, Inc. All rights reserved. This software licensed under BSD license, the text of which follows: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of the Red Hat, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ----------------------------------------------------------------------------- The corosync-qdevice project uses software for release processing which generates changelogs and version information for the software. These programs are not used by the generated binaries or libraries These files are git-version-gen and gitlog-to-changelog. ----------------------------------------------------------------------------- The license for these files is as follows: This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

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The Corosync Cluster Engine Qdevice. 展开 收起
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