My Cluster Screen
My Cluster opens as the first tab of the Dashboard screen when you select Dashboard from the navigation menu. It displays numeric and tabular information for the "current" cluster (selected in the cluster selector tool on the main toolbar).
Viewing Cluster Information
Use the widgets to view the relevant cluster information:
| Widget | Description |
|---|---|
Cluster Health |
The cluster status:
|
Storage |
The amount of memory the cluster uses:
|
Connections |
The cluster connection counters for thin and thick clients. A set of chips for adding connections. |
Details |
A table of the cluster details, including |
Nodes |
A list of cluster’s nodes. |
Viewing Cluster Health Details
To view details of the cluster health (status), in the Cluster Health widget, click the View Details link. The Cluster Health Details dialog shows what specific problems, if any, are observed in the cluster.
For GridGain 8 and Apache Ignite clusters:
For GridGain 9 clusters:
Viewing Cluster Nodes
The Nodes widget provides information about the nodes that are in the baseline topology.
The term "baseline topology" refers to a set of nodes that are meant to hold data.
To add columns to the table or remove them from the table, select the Table Columns option from the table’s context menu, then select or clear check boxes for the columns on the list that opens.
To define the auto-adjustment timeout, click the Configuration icon above the node list, toggle the auto-adjustment on, then enter the timeout value (in seconds).
| Column | Description |
|---|---|
Consistent ID |
The consistent ID of the node. |
Node ID |
The ID of the node. |
Status |
Whether the node is online. A node that goes down remains registered in the baseline topology until you manually remove it or until it’s removed automatically through baseline autoadjustment. |
Node Type |
The type of the node: |
Baseline |
A toggle that enables removing the node from the baseline or adding it to the baseline. |
By default, the widget displays only server nodes. To add client nodes to the widget, in the Nodes context menu, toggle on Show client nodes.
Adding/Removing Nodes from Baseline
You cannot remove online nodes from the baseline topology. Therefore, before you remove an online node from the baseline, you must stop the node. Changes in the baseline topology trigger a rebalancing of the data (depending on the cluster configuration). Rebalancing can impact cluster performance for the duration of the rebalancing process.
To remove a node from the baseline topology:
-
Stop the node.
-
Switch off the Baseline control.
-
Click Apply baseline.
To add a node to the baseline topology:
-
Start the node and wait until it connects to the cluster.
-
Go to the Baseline screen in Control Center.
-
Switch on the Baseline control for the node.
-
Click Apply baseline.
Enabling Baseline Autoadjustment
The baseline autoadjustment feature changes the baseline automatically when the cluster topology has been stable for a specified period.
You can enable baseline autoadjustment and set the timeout in the top-right corner of the Baseline screen. The timeout is set in seconds.
Viewing Graphic Dashboards
To view the default graphic dashboard for the current cluster, click the Default next to the My Cluster tab in the top left corner of the screen.
Switching Between Clusters
If multiple clusters are registered in Control Center, you can switch between clusters by using the Select Cluster control on the top toolbar. NOTE: To view a list of available clusters on the Cluster Management screen, select Cluster Management from the menu on the top toolbar.
Adding Connections
To add a connection to the cluster, in the Connections widget:
-
Click the required client/protocol chip.
-
Proceed to define the new connection.
Sharing Clusters
You can have access to a cluster as:
-
User - a regular user who can view the cluster that had been shared with them individually or via a team, as well as utilize the actions that appear in the cluster’s context menu.
-
Owner - the user who had created or attached the cluster. Owners have extended cluster access rights, including sharing the cluster with teams or users, suspension, removal, etc.
As a cluster owner, you can share that cluster with individual users and/or teams. NOTE: To create and manage teams on the Teams screen, select Team Management from the menu on the top toolbar.
Sharing with Users and Teams
To share the current cluster, click Share above the Details widget. The Share Cluster dialog opens.
The dialog lists users and teams that already have access to the cluster.
In the entry field across the top of the Share Cluster dialog, start typing a Control Center user’s email, an LDAP ID, or a team name. As you type, the incremental search mechanism displays suggestions in a drop-down list. Select one of the suggested users or teams. Alternatively, type the identifier to the end, then click [Enter]. You can add multiple users and/or teams in a single operation. When done, click Share.
The users and teams you have entered appear in the corresponding sections of the Share Cluster dialog. The system notifies the users and team members that a cluster had been shared with them. To close the Share Cluster dialog, click Close.
Stopping a Cluster Share
As a cluster owner, you can stop sharing your cluster with a team or with an individual user (remove access to the cluster that had been previously granted to that team or user).
To stop sharing a cluster with team(s) and/or user(s), click Share above the Details widget.
IN the Share Cluster dialog that opens, select Stop Sharing from the context menu by the required team or user name. In the confirmation dialog, click Stop Sharing.
Activating and Deactivating Cluster
If your current cluster is active, you can deactivate it by selecting the Deactivate option from the context menu next to the Share button, then clicking Deactivate in the confirmation dialog.
If your current cluster is inactive, you can activate it by clicking the Activate button on the top of the screen, then clicking Activate in the confirmation dialog. == Attaching Clusters
To attach a cluster, click + on the top toolbar, then follow the procedure that corresponds to your cluster:
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