OpenStack Kilo on Ubuntu 14.04.2 – Configure KeyStone #1

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Keystone is the OpenStack identity service, it provides the functionality of tracking users and their permissions; catalog functions via API endpoints. It doesn’t actually provide you any user management  functions, rather, it provides plug-in interfaces to choose between current authentication service or third-party identity services that are available on the market.

Before going ahead, take a look at our Infrastructure design in previous article.

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This guide shows you how to install and configure OpenStack Identity service, code-named keystone, on the controller node.

Prerequisites:

Before installing OpenStack identity service, you must create a database and administration token.

# mysql -u root -p

create the keystone database.

CREATE DATABASE keystone;

Set proper access to keystone database.

GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'localhost' IDENTIFIED BY 'PASSWD';
GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' IDENTIFIED BY 'PASSWD';

Replace PASSWD with a suitable password.

Generate a random value and that can be used as an administration token for initial configuration.

# openssl rand -hex 10

Install and Configure KeyStone:

Disable keystone service from starting automatically after installation.

# echo "manual" > /etc/init/keystone.override

* In Kilo, Apache HTTP server is used to serve keystone requests on ports 5000 and 35357 with help of mod_wsgi instead of Eventlet which is depreciated in this version OpenStack.

Install keystone.

# apt-get install keystone python-openstackclient apache2 libapache2-mod-wsgi memcached python-memcache

Edit keystone configuration file.

# nano /etc/keystone/keystone.conf

Place the following entries in proper section of the above file.

[DEFAULT]
...
admin_token = 43405b090eda983ddde2 ## Replace 43405b090eda983ddde2 with a random that you generated earlier
verbose = True

[database]
...
connection = mysql://keystone:PASSWD@controller/keystone  ## Replace PASSWD with your KeyStone DB password
[memcache]
...
servers = localhost:11211
[token]
...
provider = keystone.token.providers.uuid.Provider
driver = keystone.token.persistence.backends.memcache.Token
[revoke]
...
driver = keystone.contrib.revoke.backends.sql.Revoke

Run the following command to populate the identity service database.

# keystone-manage db_sync

Configure Apache HTTP server:

Edit /etc/apache2/apache2.conf and configure ServerName option to reference the controller node.

ServerName controller

Create the below file.

# nano /etc/apache2/sites-enabled/wsgi-keystone.conf

Paste the following content on to above file.

Listen 5000
Listen 35357

<VirtualHost *:5000>
    WSGIDaemonProcess keystone-public processes=5 threads=1 user=keystone display-name=%{GROUP}
    WSGIProcessGroup keystone-public
    WSGIScriptAlias / /var/www/cgi-bin/keystone/main
    WSGIApplicationGroup %{GLOBAL}
    WSGIPassAuthorization On
    <IfVersion >= 2.4>
      ErrorLogFormat "%{cu}t %M"
    </IfVersion>
    LogLevel info
    ErrorLog /var/log/apache2/keystone-error.log
    CustomLog /var/log/apache2/keystone-access.log combined
</VirtualHost>

<VirtualHost *:35357>
    WSGIDaemonProcess keystone-admin processes=5 threads=1 user=keystone display-name=%{GROUP}
    WSGIProcessGroup keystone-admin
    WSGIScriptAlias / /var/www/cgi-bin/keystone/admin
    WSGIApplicationGroup %{GLOBAL}
    WSGIPassAuthorization On
    <IfVersion >= 2.4>
      ErrorLogFormat "%{cu}t %M"
    </IfVersion>
    LogLevel info
    ErrorLog /var/log/apache2/keystone-error.log
    CustomLog /var/log/apache2/keystone-access.log combined
</VirtualHost>

Create the directory for WSGI components.

# mkdir -p /var/www/cgi-bin/keystone

Run the following command to download WSGI components from upstream repository.

# curl http://git.openstack.org/cgit/openstack/keystone/plain/httpd/keystone.py?h=stable/kilo | tee /var/www/cgi-bin/keystone/main /var/www/cgi-bin/keystone/admin

Change ownership and permissions.

# chown -R keystone:keystone /var/www/cgi-bin/keystone
# chmod 755 /var/www/cgi-bin/keystone/*

Restart the Apache service.

# service apache2 restart

Remove SQLite database as we are using MySQL database.

# rm -f /var/lib/keystone/keystone.db

Next is to Create the service entity and API endpoints.

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