Accessing the Storm Web UI

The Storm web UI provides a graphical interface for using Storm.

The following information can be queried on the Storm web UI:

The password of user admin has been obtained. The password of user admin is specified by you during the cluster creation.
If a user other than admin is used to access the Storm web UI, the user must be added to the storm or stormadmin user group.

Access the component management page.
- For versions earlier than MRS 3.x, click the cluster name to go to the cluster details page and choose Components.
  
  If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.)
- For MRS 3.x or later, log in to FusionInsight Manager. For details, see Accessing FusionInsight Manager (MRS 3.x or Later). Choose Cluster > Name of the desired cluster > Services.
Log in to the Storm WebUI.
- For versions earlier than MRS 3.x: Choose Storm. On the Storm Summary area, click any UI link on the right side of Storm Web UI to open the Storm web UI.
  
  When accessing the Storm web UI for the first time, you must add the address to the trusted site list.
- For MRS 3.x or later, choose Storm > Overview. In the Basic Information area, click any UI link on the right side of Storm Web UI to open the Storm web UI.

Click a topology name to view details, status, Spouts information, Bolts information, and configuration information of the topology.
In the Topology actions area, click Activate, Deactivate, Rebalance, Kill, Debug, Stop Debug, and Change Log Level to activate, deactivate, redeploy, delete, debug, and stop debugging the topology, and modify the log levels, respectively. You need to set the waiting time for the redeployment and deletion operations. The unit is second.
In the Topology Visualization area, click Show Visualization to visualize a topology. After the topology is visualized, the WebUI displays the topology structure.