streamtool restartservice
The streamtool restartservice command restarts instance services.
Usage
restartserv, restartservice >>-+-----------------------+--+-------------+-------------------> '-+- -d----------+--did-' '-+- -h-----+-' '- --domain-id-' '- --help-' >--+-------------------------+--+-------------+-----------------> '-+- -i------------+--iid-' '- --noprompt-' '- --instance-id-' >--+-------------------------+--+-----------------+-------------> '- --resource--resourceId-' '- --trace--level-' >--+---------------------+--+-----------------------+-----------> '-+- -U-----+--userid-' '-+- -v--------+--level-' '- --User-' '- --verbose-' .-+---+---. | '-,-' | V | >--| Non-interactive tool options |----service-+--------------->< Non-interactive tool options (1) |--------+-----------------------------+------------------------| +- --embeddedzk---------------+ | .-,---------. | | V | | '- --zkconnect----host:port-+-'
- The non-interactive tool options are not supported in the interactive streamtool interface.
Authority
You must have write authority for the instance object. By default, the DomainAdministrator and InstanceAdministrator roles have this authority. For more information about access control lists, see streamtool getacl.
Description
When you start an InfoSphere® Streams instance, services start on the appropriate resources. If a software, hardware, or network interruption occurs and an instance service fails, InfoSphere Streams tries to restart the service. The domain.serviceRetryCount domain property specifies the number of times InfoSphere Streams tries to restart the service. If you configured high availability for the management services in an instance, InfoSphere Streams can switch to using standby services and thus does not wait for the failing service to restart.
If you resolved the software, hardware, or network problem and want to restart the failed instance services, you can run this command. Alternatively, you can stop and start the instance or quiesce and resume the resource where the service runs.
You might also use this command if you updated an instance property that affected only a specific service and did not want to restart all of the services in the instance.
If you specify multiple services in the command, they are restarted in the order specified. There are no longer dependencies between the services; you can restart the services in any order.
- app: The application deployment service.
- hc: The host controller service.
- sam: The application manager service.
- sch: The scheduler service.
- srm: The application metrics service.
- view: The view service.
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.
- -i, --instance iid
Specifies the instance identifier.
If you do not specify this option, InfoSphere Streams uses the instance identifier that is set in the STREAMS_INSTANCE_ID environment variable. By default, that instance identifier is StreamsInstance. If you are using the interactive streamtool interface, it tries to use an instance ID that you specified in a previous command. If no such value is found, the command uses the STREAMS_INSTANCE_ID environment variable. Alternatively, you can run the streamtool instance command in the interactive interface.
- --noprompt
Specifies to suppress confirmation prompts.
- --resource resourceId
Specifies a resource identifier, which varies depending on the resource manager. For example, it might be a host name or IP address. The command restarts the specified services on this resource. If you do not use this option, the command restarts the specified services on all of the resources in the instance.
- service
Specifies the name of the instance service. The following service name values are valid: app; hc; sam; sch; srm; view. If you specify multiple services, the command restarts them in the order specified.
- --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
- -U, --User userid
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:- The --embeddedzk option
- The value from the STREAMS_ZKCONNECT environment variable
- A ZooKeeper connection string that is derived from cached information about the current domain.