Control Center 1.3.0 introduces enhancements in the following functional areas:
- Emergency shutdownFor services in a resource pool with DFS access, Control Center monitors storage usage levels and trends. Using collected data, it predicts when a service will exhaust storage space. Data corruption can result if thin pool or metadata volume space is exhausted. If Control Center projects that the service is likely to exhaust available storage space in a pre-determined window, it will initiate an automatic emergency shutdown of the service, while enough space is still available to perform recovery operations. Support for this feature requires at least 3GB of free space in the thin pool for data and metadata. For more information on this feature, including how to view current storage utilization and how to recover from an emergency shutdown, see the Control Center Reference Guide.
- Rolling restart
Control Center now restarts instances of multi-instance services one at a time. This rolling restart reduces or eliminates downtime for these services on Restart, such as following a ZenPack install or upgrade. In a WAN outage, the rolling restart proceeds, and instances on disconnected hosts restart when the WAN is restored.
- Graceful shutdown
Improved service startup, restart, and shutdown order to optimize startup times and perform normal shutdowns more gracefully. When taking a snapshot, all services pause while the snapshot is taken, and then return to their prior state. Requests to start, stop, or restart a service during the snapshot are delayed until after the snapshot.
- NAT support
Control Center supports the use of network address translation (NAT). When you add a delegate host, you specify the hostname or IP address and port for the NAT device, and then transfer host keys to the delegate hosts and register them.