Stein Series Release Notes¶

New Features¶

• Support separate oslo.messaging services for RPC and Notifications to enable operation of separate and different messaging backend servers.

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

• The task dropping the watcher 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 pollute the generic systemd unit file with jinja2 variables and conditionals.

• For the os_watcher 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 watcher_*_init_config_overrides variables which use the config_template task to change template defaults.

Upgrade Notes¶

• For the os_watcher 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 watcher_*_init_config_overrides variables which use the config_template task to change template defaults.

Deprecation Notes¶

• The rabbitmq server parameters have been replaced by corresponding oslo.messaging RPC and Notify parameters in order to abstract the messaging service from the actual backend server deployment. - watcher_oslomsg_rpc_servers replaces watcher_rabbitmq_servers - watcher_oslomsg_rpc_port replaces watcher_rabbitmq_port - watcher_oslomsg_rpc_userid replaces watcher_rabbitmq_userid - watcher_oslomsg_rpc_vhost replaces watcher_rabbitmq_vhost - watcher_oslomsg_rpc_use_ssl replaces watcher_rabbitmq_use_ssl - watcher_oslomsg_rpc_password replaces watcher_rabbitmq_password - added watcher_oslo_msg_notify_servers - added watcher_oslo_msg_notify_port - added watcher_oslo_msg_notify_use_ssl - added watcher_oslo_msg_notify_userid - added watcher_oslo_msg_notify_vhost - added watcher_oslo_msg_notify_password