- The Storm ui home page is mainly divided into 4 parts: Cluster Summary, Topology summary, Supervisor summary, Nimbus Configuration, as shown in the following figure:
- Cluster Summary
Version: storm version number
Nimbus uptime : nimbus uptime
Supervisor : the number of supervisors in the storm cluster
User slots : the number of slots used Free slots: the number of remaining slots
Total slots : The total number of slots (corresponding to the number of ports configured in the supervisor.slots.ports property of the configuration file, the sum of the clusters)
Executors : the number of threads
Tasks : number of tasks
- Topology summary
Name : topology name
Id : The topology id generated by the system
Status : Running status (ACTIVE, INACTIVE, KILLED, REBALANCING)
Uptime : Uptime
Num workers : the number of workers running
Num Exectors : The number of threads that workers are running
Num Tasks : The number of tasks that Excetors ran
- Supervisor summary
Id : The supervisor Id generated by the system
Host : the hostname of the supervisor (host)
Uptime : Uptime
Slots : The number of ports of supervisor
User slots : the number of ports used
- Nimbus Configuration
It is the configuration file information in the nimbus cluster, not explained in detail (the key can be viewed in the storm installation chapter)
2 Topology page
Topology 页面主要分6块：Topology summary，Topology actions，Topology stats，Spouts (All time)，Bolts (All time)，Topology Visualization，Topology Configuration
- Topology summary
Same as Topology summary in the home page
- Topology actions
Topology running status, you can manually change the status (ACTIVE, DEACTIVATE, KILLED, Rebalance)
- Topology stats
Window : Time window, showing the running status of 10m, 3h, 1d and all time
Emitted: emit tuple数
Transferred : The number of transferred tuples, let's talk about the difference from emitted: if a task emits a tuple to two tasks, the number of transferred tuples is twice the number of emitted tuples
complete latency : the average time from spout emitting a tuple to spout ack this tuple
Acked : Number of successful tuples
Failed : Number of failed tuples
- Spouts (All time)
Id: spout id
Executors : the number of threads
Emitted: emit tuple数
Transferred : transferred tuple数,
complete latency : the average time from spout emitting a tuple to spout ack this tuple
Acked : Number of successful tuples
Failed : Number of failed tuples
Error Host : The machine where the error occurred
Error Port : the port number where the error occurred
last error : the number of recent errors
- Bolts (All time)
Execute latency(ms) : The average time for the bolt to execute the execute method
Executed : number of tuple processed
Process latency(ms) : The average time from when the bolt receives a tuple to the bolt ack tuple . If the Acker mechanism is not enabled, the value of Process latency is 0.
Note: The other fields have been mentioned above, so they will not be explained.
- Topology Visualization
Topology display
- Topology Configuration
Configuration instructions, not in detail
Note on the spout and bolt pages, you can refer to the field descriptions in spout and bolt in the topology page