Using Storm from Scratch

You can submit and delete Storm topologies on the MRS cluster client.

Prerequisites

The MRS cluster client has been installed, for example, in the /opt/hadoopclient directory. The client directory in the following operations is only an example. Change it based on the actual installation directory onsite.

Procedure

Prepare the client based on service requirements. Log in to the node where the client is installed.
Run the following command to switch to the client directory, for example, /opt/hadoopclient:

cd /opt/hadoopclient
Run the following command to configure environment variables:

source bigdata_env
For clusters with Kerberos authentication enabled, run the following command to authenticate the user. For clusters with Kerberos authentication disabled, skip this step.

kinit Storm user
Run the following command to submit the Storm topology:

storm jar Path of the topology package Class name of the topology Main method Topology name

If the following information is displayed, the topology is submitted successfully.
```
Finished submitting topology: topo1
```
Run the following command to query Storm topologies. For clusters with Kerberos authentication enabled, only users in the stormadmin or storm group can query all topologies.

storm list
Run the following command to delete a Storm topology.

storm kill Topology name