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OpenStack HA 高可用性参考
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OpenStack HA 高可用性参考,如何配置OpenStack高可用系统
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OpenStack High Availability
Guide
January 6, 2015 current
ii
OpenStack High Availability Guide
current (2015-01-06)
Copyright © 2012-2014 OpenStack Contributors All rights reserved.
This guide describes how to install, configure, and manage OpenStack for high availability.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You
may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing
permissions and limitations under the License.
OpenStack High Availability
Guide
January 6, 2015 current
iii
Table of Contents
Preface ............................................................................................................................ v
Conventions ............................................................................................................ v
Document change history ........................................................................................ v
1. Introduction to OpenStack High Availability ................................................................ 1
Stateless vs. Stateful services ................................................................................... 2
Active/Passive .......................................................................................................... 2
Active/Active ........................................................................................................... 2
I. HA using active/passive ................................................................................................ 4
2. The Pacemaker cluster stack ................................................................................ 6
Install packages ............................................................................................... 6
Set up Corosync .............................................................................................. 6
Starting Corosync ............................................................................................ 9
Start Pacemaker .............................................................................................. 9
Set basic cluster properties ............................................................................ 10
3. Cloud controller cluster stack ............................................................................. 11
Highly available MySQL ................................................................................. 11
Highly available RabbitMQ ............................................................................ 14
4. API node cluster stack ....................................................................................... 18
Configure the VIP .......................................................................................... 18
Highly available OpenStack Identity ............................................................... 18
Highly available OpenStack Image API ........................................................... 20
Highly available Block Storage API ................................................................. 22
Highly available OpenStack Networking server .............................................. 23
Highly available Telemetry central agent ....................................................... 25
Configure Pacemaker group .......................................................................... 26
5. Network controller cluster stack ........................................................................ 27
Highly available neutron L3 agent ................................................................. 27
Highly available neutron DHCP agent ............................................................ 28
Highly available neutron metadata agent ...................................................... 29
Manage network resources ........................................................................... 29
II. HA using active/active ............................................................................................... 30
6. Database ........................................................................................................... 32
MySQL with Galera ....................................................................................... 32
7. RabbitMQ ......................................................................................................... 36
Install RabbitMQ ........................................................................................... 36
Configure RabbitMQ ..................................................................................... 37
Configure OpenStack services to use RabbitMQ ............................................. 38
8. HAProxy nodes .................................................................................................. 40
9. OpenStack controller nodes ............................................................................... 43
Run OpenStack API and schedulers ................................................................ 43
Memcached ................................................................................................... 44
10. OpenStack network nodes ............................................................................... 45
Run neutron DHCP agent .............................................................................. 45
Run neutron L3 agent ................................................................................... 45
Run neutron metadata agent ........................................................................ 45
Run neutron LBaaS agent .............................................................................. 46
A. Community support .................................................................................................. 47
Documentation ..................................................................................................... 47
OpenStack High Availability
Guide
January 6, 2015 current
iv
ask.openstack.org .................................................................................................. 48
OpenStack mailing lists .......................................................................................... 48
The OpenStack wiki ............................................................................................... 49
The Launchpad Bugs area ..................................................................................... 49
The OpenStack IRC channel ................................................................................... 50
Documentation feedback ...................................................................................... 50
OpenStack distribution packages ........................................................................... 50
OpenStack High Availability
Guide
January 6, 2015 current
v
Preface
Conventions
The OpenStack documentation uses several typesetting conventions.
Notices
Notices take these forms:
Note
A handy tip or reminder.
Important
Something you must be aware of before proceeding.
Warning
Critical information about the risk of data loss or security issues.
Command prompts
$ prompt Any user, including the root user, can run commands that are prefixed with
the $ prompt.
# prompt The root user must run commands that are prefixed with the # prompt. You
can also prefix these commands with the sudo command, if available, to run
them.
Document change history
This version of the guide replaces and obsoletes all earlier versions.
The following table describes the most recent changes:
Revision Date Summary of Changes
October 17, 2014 • This guide has gone through editorial changes to follow the OpenStack documentation con-
ventions. Various smaller issues have been fixed.
May 16, 2014 • Conversion to Docbook.
April 17, 2014 • Minor cleanup of typos, otherwise no major revisions for Icehouse release.
January 16, 2012 • Organizes guide based on cloud controller and compute nodes.
May 24, 2012 • Begin trunk designation.
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