streamtool resumehost

Usage

resumehost [-d,--domain-id <did>] [-U,--User <user>] [-h,--help] [--trace <level>] [-v,--verbose <level>] [--zkconnect {<host>:<port>},... | --embeddedzk] <hostname> ... | <hostname>,...

The streamtool resumehost command resumes one or more quiesced Streams resources in the domain.

Authority

You must have write 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

This command is deprecated and might become obsolete. Use the streamtool resumeresource command instead.

Resuming a quiesced Streams resource restarts the configured services on the resource and makes it available to the domain and instances.

If there are problems starting the services on the resource, the operation fails. You can use the streamtool rmhost command to remove the resource from the instance.

See also

streamtool quiescehost

Options

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

If you do not specify this option, 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, Streams uses the ZooKeeper connection that is associated with the active domain or the domain that is specified in the --domain-id option. 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 Streams configuration cache, the command fails.

-h,--help
Specifies to show the command syntax.
--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 Streams user ID that has authority to run the command.
-v,--verbose <level>
Specifies to provide more detailed command output. The verbosity level can be 0-3, where 0 disables detailed reporting and 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, 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.

Arguments

hostname
hostname

Examples

The following example uses the streamtool resumehost command to restart a quiesced host:

[streamtool <bsmith@mydomain.streams>] resumehost host3
CDISC0073I The system is resuming the processes on the host3 host of the mydomain domain.
...
CDISC0031I The system resumed the services of the host3 host, and the host is now available.