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Matt Thompson 06708191d6 Install Guide Cleanup

This commit does the following:

- sets all shell prompts in code-blocks to the root prompt
- uses shell-session code-block since the shell prompt was being
  treated as a comment
- links configure-aodh.rst in configure.rst (running tox was
  complaining that this file wasn't being linked anywhere)
- other minor cleanup

Change-Id: I9e3ac8bb0cabd1cc17952cfd765dbb0d8f7b6fa2

2015-10-21 07:25:25 +01:00

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Home OpenStack-Ansible Installation Guide

Availability zones

Multiple availability zones can be created to manage Block Storage storage hosts. Edit the /etc/openstack_deploy/openstack_user_config.yml and /etc/openstack_deploy/user_variables.yml files to set up availability zones.

For each cinder storage host, configure the availability zone under the container_vars stanza:
```
cinder_storage_availability_zone: CINDERAZ
```
Replace CINDERAZ with a suitable name. For example cinderAZ_2
If more than one availability zone is created, configure the default availability zone for all the hosts by creating a cinder_default_availability_zone in your /etc/openstack_deploy/user_variables.yml
```
cinder_default_availability_zone: CINDERAZ_DEFAULT
```
Replace CINDERAZ_DEFAULT with a suitable name. For example, cinderAZ_1. The default availability zone should be the same for all cinder hosts.

If the cinder_default_availability_zone is not defined, the default variable will be used (nova). This could make horizon's volume creation fail.

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Availability zones

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