Pike Series Release Notes¶

16.0.0¶

Capping the default value for the variable cinder_osapi_volume_workers to 16 when the user doesn’t configure this variable. Default value is half the number of vCPUs available on the machine with a capping value of 16.

Added cinder_auth_strategy variable to configure Cinder’s auth strategy since Cinder can work in noauth mode as well.

The os_cinder role now provides for doing online data migrations once the db sync has been completed. The data migrations will not be executed until the boolean variable cinder_all_software_updated is true. This variable will need to be set by the playbook consuming the role.

New variables have been added to allow a deployer to customize a cinder systemd unit file to their liking.

The task dropping the cinder systemd unit files now uses the config_template action plugin allowing deployers access to customize the unit files as they see fit without having to load extra options into the defaults and polute the generic systemd unit file with jinja2 variables and conditionals.

Add support for the cinder v3 api. This is enabled by default, but can be disabled by setting the cinder_enable_v3_api variable to false.

For the os_cinder role, the systemd unit TimeoutSec value which controls the time between sending a SIGTERM signal and a SIGKILL signal when stopping or restarting the service has been reduced from 300 seconds to 120 seconds. This provides 2 minutes for long-lived sessions to drain while preventing new ones from starting before a restart or a stop. The RestartSec value which controls the time between the service stop and start when restarting has been reduced from 150 seconds to 2 seconds to make the restart happen faster. These values can be adjusted by using the cinder_*_init_config_overrides variables which use the config_template task to change template defaults.

The cinder-api service has moved to run as a uWSGI application. You can set the max number of WSGI processes, the number of processes, threads, and buffer size utilizing the cinder_wsgi_processes_max, cinder_wsgi_processes, cinder_wsgi_threads, and cinder_wsgi_buffer_size. Additionally, you can override any settings in the uWSGI ini configuration file using the cinder_api_uwsgi_ini_overrides setting. The uWSGI application will listen on the address specified by cinder_uwsgi_bind_address which defaults to 0.0.0.0.

The ability to disable the certificate validation when checking and interacting with the internal cinder endpoint has been implemented. In order to do so, set the following in /etc/openstack_deploy/user_variables.yml.
```
cinder_service_internaluri_insecure: yes
```

The variables cinder_sigkill_timeout and cinder_restart_wait have been removed. The previous default values have now been set in the template directly and can be adjusted by using the cinder_*_init_overrides variables which use the config_template task to change template defaults.

The cinder_keystone_auth_plugin variable has been deprecated. cinder_keystone_auth_type should be used instead to configure authentication type.

Remove cinder_glance_api_version option due to deprecation of glance_api_version option in Cinder.

Remove cinder_rpc_backend option due to deprecation of rpc_backend option in oslo.messaging.