IBM InfoSphere Streams Version 4.1.0

streamtool rmdomainhost

The streamtool rmdomainhost command removes one or more InfoSphere® Streams resources from the domain. It also stops the domain controller service on each resource.

Usage

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rmdomainhost

>>-+-----------------------+--+---------+--+-------------+------>
   '-+- -d----------+--did-'  +- -h-----+  '- --noprompt-'   
     '- --domain-id-'         '- --help-'                    

>--+-----------------+--+-------------------+------------------->
   '- --trace--level-'  '-+- -U-----+--user-'   
                          '- --User-'           

                              .-+---+------.   
                              | '-,-'      |   
                              V            |   
>--+-----------------------+----resourceID-+-------------------->
   '-+- -v--------+--level-'                   
     '- --verbose-'                            

>--| Non-interactive tool options |----------------------------><

Non-interactive tool options

    (1)                                    
|--------+-----------------------------+------------------------|
         +- --embeddedzk---------------+   
         |               .-,---------. |   
         |               V           | |   
         '- --zkconnect----host:port-+-'   

Notes:
  1. The non-interactive tool options are not supported in the interactive streamtool interface.

Authority

You must have delete and search authority for the hosts domain object. By default, the DomainAdministrator role has this authority. For more information about access control lists, see streamtool getdomainacl.

Description

Unlike the streamtool unregisterdomainhost command, this command can be run from any InfoSphere Streams resource in the domain and you are not required to be the root user. If the domain controller service is stopped on a resource, however, this command cannot remove that resource. It also does not remove the domain controller service from the list of Linux system services on the resource.

You cannot remove a resource when:
  • It is the last resource in the domain. Instead, you must use the streamtool rmdomain command.
  • The resource is allocated to an instance in the domain and the instance is started. You must stop the instance before you remove a resource. For more information, see the streamtool stopinstance command.
  • There are InfoSphere Streams services other than the domain controller service that are running on the resource. You must stop or quiesce the resource before you remove it. For more information, see the streamtool quiesceresource and streamtool stopdomainhost commands.

Options and arguments

-d, --domain-id did
Specifies the domain identifier.

If you do not specify this option, InfoSphere Streams uses the domain name that is set in the STREAMS_DOMAIN_ID environment variable. By default, that domain name is StreamsDomain. If you are using the interactive streamtool interface, it uses the name of the active domain for the current streamtool session or else it prompts you for the domain name.

The active domain for the current streamtool session is set every time that you successfully run a streamtool command with a -d or --domain-id option. Alternatively, you can run the streamtool domain command in the interactive interface.

-embeddedzk

Specifies to use the embedded copy of ZooKeeper. This option is not supported within the interactive streamtool interface.

If you are not using the interactive streamtool interface and you do not specify either this option or the --zkconnect option, InfoSphere Streams uses the ZooKeeper connection that is associated with the active domain or the domain that is specified in the --domain-id option. InfoSphere Streams determines which connection maps to the domain by using cached information about the domains. In this scenario, if the domain identifier is not unique in the InfoSphere Streams configuration cache, the command fails.

-h, --help
Specifies to show the command syntax.
--noprompt
Specifies to suppress confirmation prompts.
resourceID
Specifies a resource identifier, which varies depending on the resource manager. For example, it might be a host name or IP address.
--trace level
Specifies the trace setting. The following valid levels are listed in order of increasing verbosity, which is to say that the first level in the list generates the least amount of information:
  • off
  • error
  • warn
  • info
  • debug
  • trace
The default value is off.
-U,--User user
Specifies an InfoSphere Streams user ID that has authority to run the command.
-v,--verbose level
Specifies to provide more detailed command output. The vebosity level can be from 0 to 3 where each increment provides more detailed output.
--zkconnect host:port

The name of one or more host and port pairs that specify the configured ZooKeeper servers. This option is not supported within the interactive streamtool interface.

If you are not using the interactive streamtool interface and you do not specify this option, InfoSphere Streams tries to use:
  1. The --embeddedzk option
  2. The value from the STREAMS_ZKCONNECT environment variable
  3. A ZooKeeper connection string that is derived from cached information about the current domain.

Examples

The following command output shows an example of removing one InfoSphere Streams resource from the StreamsDomain domain:
[streamtool <bsmith@StreamsDomain.StreamsInstance>] rmdomainhost server1
CDISC1014W Do you want to remove the [server1] resources from the StreamsDomain domain? 
Enter "y" to continue or "n" to cancel: y
CDISC0044I InfoSphere Streams is removing the following resource from the StreamsDomain domain: server1.