Hosts page

The Hosts page displays information about the individual hosts that are included in all resource pools that Control Center employs.

The Hosts table lists each machine that is assigned to a resource pool. Summary information about each host includes whether it is active, its resource pool, memory, RAM limit and usage (for the Docker containers only), CPU cores, kernel version, and the version of Control Center that the host is running, and actions that you can perform on the host.

You can search for, add, and delete hosts. To display details about a host, click the host name.

The memory values in the table on the Hosts page differ from those in the Memory Usage graph on the host details page. The table shows memory usage for the Docker containers only. The graph shows total system memory usage for the Docker containers and all services that are running on the system.

Host details

The hosts details page displays information about a specific machine that is assigned to a resource pool.

You can edit the host's RAM limit, and reset the host's authentication keys and generate a new key pair. When you reset keys, services that are running on the host cannot connect until you register the new keys by using the serviced host register command.

The graphs show dynamic information about the host's CPU usage, memory usage (total for Docker containers and all services that are running on the system), load average, and other details. You can filter the information that is displayed in a graph. For example, in the Memory Usage graph, click Used to hide used memory, and then click it again to display used memory. You can edit the graph settings to change the time range, whether the graph shows the sum or the average, and the refresh frequency.

Below the graphs is IP and service instance information. You can search each table for specific IP or service information.