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