There are five (5) main sections of the Xpand GUI. Each of these can be directly accessed via the icons at the top of each page:
Access the XpandGUI by typing the ip or hostname of one of your nodes into a web browser. For non-root installations, include port 8080. Chrome is recommended.
When logging in for the first time, provide the following temporary credentials:
Xpand strongly recommends that you create a new user and delete the [email protected] user. To create a new user, access the "Manage Users" in the upper right corner of any page by clicking on . For more information see Managing XpandGUI Users
The 'Health Dashboard' is designed to give a quick high-level overview of database cluster health and activity. There are 24-hour sparkline graphs of six main cluster attributes: Transactions per second, CPU utilization, Rebalancer status, In-memory table utilization, Storage, and Read and Write latencies. These graphs are shown in green, yellow, or red depending on how they compare to threshold levels. Visual Alerts are displayed for attributes which are outside normal ranges. All data is polled and updated every 5 seconds.
The TPS section displays the number of database transactions per second across all nodes, including sections for:
You can select whether to display transactions or queries per second.
The CPU section: displays Average CPU utilization across all the database nodes in the cluster including:
The rebalancer section displays the number and type of current rebalancer actions, as well as a history of recent actions, and actions over the previous 24 hours. If the cluster is underprotected, the Rebalancer health will reflect that.
The memory section provides information on how memory is used, including for In-Memory tables.
The Storage section displays how storage is being consumed across the active nodes in the cluster, including the following:
This section also includes a breakdown of "Storage by node" and displays the "Storage allocation in the last 24 hours." These are useful for identifying uneven or "lumpy" distributions in data or recent changes to storage.
The Queries tab has two distinct views that show Current and Recent Queries.
The Current Queries view displays all currently executing queries and queries that have completed within the last second. By default, this view is auto-refreshed every 5 seconds but can also be paused. If you navigate away from the Current Queries view, auto-refresh will resume.
The following metrics are displayed:
Current Queries can be filtered via the Query Filters in the left pane or by entering text into the 'Filter by text' field.
Queries shown in the 'Current' Queries view will be removed as they complete, and subsequently can be found on the 'Recent' page.
The 'Recent' Queries view displays all the queries which have been recently completed, along with the following metrics:
Recent Queries can be filtered via the Query Filters in the left pane or by entering text into the 'Filter by text' field.
The 'Graphs' tab displays important database attributes over a user-specified interval. There are predefined collections of graphs for Diagnostic (Xpand Specifics), Health, Locks, Performance, Queries and Rows, Replication, Sessions and Transactions, and Storage. You can also define custom collections.
The default interval is 24 hours, but can be range from 15 minutes to 7 days. Choose an interval width on the data selector, or the top ruler (using the left/right cursors) by dragging that selected interval across the date range. Refresh the screen to go back to the default time frame.
The Compare tab allows users to compare two sets of database attributes at two different points in time. The default attributes are CPU min/max/average, and query latency. The other attributes are shown in the drop-down below.
The left-side list of values is displayed on the left-side Y-axis, and the right-side list of values is displayed on the right-side Y-axis. The horizontal axis (time) is displayed and adjusted via the Rulers at the top of the page
The Flex page displays all the nodes and node statuses of the current cluster. It also allows the cluster to be expanded and reduced in size.
XpandGUI includes an option to "Drop this node", which simply marks the node as softfailed. For additional instructions on modifying your cluster size, see Expanding Your Cluster's Capacity - Flex Up and Reducing Your Cluster's Capacity - Flex Down.