149 lines
6.0 KiB
Markdown
149 lines
6.0 KiB
Markdown
Openstack Cinder Proxy
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===============================
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Cinder-Proxy acts as the same role of Cinder-Volume in cascading OpenStack.
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Cinder-Proxy treats cascaded Cinder as its cinder volume, convert the internal request message from the message bus to restful API calling to cascaded Cinder.
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Key modules
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-----------
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* The new cinder proxy module cinder_proxy,which treats cascaded Cinder as its cinder volume, convert the internal request message from the message bus to restful API calling to cascaded Cinder:
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cinder/volume/cinder_proxy.py
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Requirements
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------------
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* openstack-cinder-volume-2014.1-14.1 has been installed
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Installation
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------------
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We provide two ways to install the cinder proxy code. In this section, we will guide you through installing the cinder proxy with the minimum configuration.
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* **Note:**
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- Make sure you have an existing installation of **Openstack Icehouse**.
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- We recommend that you Do backup at least the following files before installation, because they are to be overwritten or modified:
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$CINDER_CONFIG_PARENT_DIR/cinder.conf
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(replace the $... with actual directory names.)
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* **Manual Installation**
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- Make sure you have performed backups properly.
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- Navigate to the local repository and copy the contents in 'cinder' sub-directory to the corresponding places in existing cinder, e.g.
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```cp -r $LOCAL_REPOSITORY_DIR/cinder $CINDER_PARENT_DIR```
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(replace the $... with actual directory name.)
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- Update the cinder configuration file (e.g. /etc/cinder/cinder.conf) with the minimum option below. If the option already exists, modify its value, otherwise add it to the config file. Check the "Configurations" section below for a full configuration guide.
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```
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[DEFAULT]
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...
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###configuration for Cinder cascading ###
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volume_manager=cinder.volume.cinder_proxy.CinderProxy
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volume_sync_interval=5
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cinder_tenant_name=$CASCADED_ADMIN_TENANT
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cinder_username=$CASCADED_ADMIN_NAME
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cinder_password=$CASCADED_ADMIN_PASSWORD
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keystone_auth_url=http://$GLOBAL_KEYSTONE_IP:5000/v2.0/
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cascading_glance_url=$CASCADING_GLANCE
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cascaded_glance_url=http://$CASCADED_GLANCE
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cascaded_available_zone=$CASCADED_AVAILABLE_ZONE
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cascaded_region_name=$CASCADED_REGION_NAME
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```
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- Restart the cinder proxy.
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```service openstack-cinder-volume restart```
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- Done. The cinder proxy should be working with a demo configuration.
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* **Automatic Installation**
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- Make sure you have performed backups properly.
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- Navigate to the installation directory and run installation script.
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```
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cd $LOCAL_REPOSITORY_DIR/installation
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sudo bash ./install.sh
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```
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(replace the $... with actual directory name.)
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- Done. The installation code should setup the cinder proxy with the minimum configuration below. Check the "Configurations" section for a full configuration guide.
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```
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[DEFAULT]
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...
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###cascade info ###
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...
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###configuration for Cinder cascading ###
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volume_manager=cinder.volume.cinder_proxy.CinderProxy
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volume_sync_interval=5
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cinder_tenant_name=$CASCADED_ADMIN_TENANT
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cinder_username=$CASCADED_ADMIN_NAME
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cinder_password=$CASCADED_ADMIN_PASSWORD
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keystone_auth_url=http://$GLOBAL_KEYSTONE_IP:5000/v2.0/
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cascading_glance_url=$CASCADING_GLANCE
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cascaded_glance_url=http://$CASCADED_GLANCE
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cascaded_available_zone=$CASCADED_AVAILABLE_ZONE
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cascaded_region_name=$CASCADED_REGION_NAME
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```
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* **Troubleshooting**
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In case the automatic installation process is not complete, please check the followings:
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- Make sure your OpenStack version is Icehouse.
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- Check the variables in the beginning of the install.sh scripts. Your installation directories may be different from the default values we provide.
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- The installation code will automatically add the related codes to $CINDER_PARENT_DIR/cinder and modify the related configuration.
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- In case the automatic installation does not work, try to install manually.
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Configurations
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--------------
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* This is a (default) configuration sample for the cinder proxy. Please add/modify these options in /etc/cinder/cinder.conf.
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* Note:
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- Please carefully make sure that options in the configuration file are not duplicated. If an option name already exists, modify its value instead of adding a new one of the same name.
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- Please refer to the 'Configuration Details' section below for proper configuration and usage of costs and constraints.
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```
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[DEFAULT]
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...
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#
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#Options defined in cinder.volume.manager
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#
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# Default driver to use for the cinder proxy (string value)
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volume_manager=cinder.volume.cinder_proxy.CinderProxy
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#The cascading level keystone component service url, by which the cinder proxy
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#can access to cascading level keystone service
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keystone_auth_url=$keystone_auth_url
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#The cascading level glance component service url, by which the cinder proxy
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#can access to cascading level glance service
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cascading_glance_url=$CASCADING_GLANCE
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#The cascaded level glance component service url, by which the cinder proxy
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#can judge whether the cascading glance image has a location for this cascaded glance
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cascaded_glance_url=http://$CASCADED_GLANCE
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#The cascaded level region name, which will be set as a parameter when
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#the cascaded level component services register endpoint to keystone
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cascaded_region_name=$CASCADED_REGION_NAME
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#The cascaded level available zone name, which will be set as a parameter when
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#forward request to cascaded level cinder. Please pay attention to that value of
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#cascaded_available_zone of cinder-proxy must be the same as storage_availability_zone in
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#the cascaded level node. And cinder-proxy should be configured to the same storage_availability_zone.
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#this configuration could be removed in the future to just use the cinder-proxy storage_availability_zone
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#configuration item. but it is up to the admin to make sure the storage_availability_zone in cinder-proxy#and casacdede cinder keep the same value.
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cascaded_available_zone=$CASCADED_AVAILABLE_ZONE
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