...
The service status is returned with the status
sub-command. For example:
Code Block |
---|
|
[root@localhost ~]# service sqtopicd status
sqtopicd (pid 3164) is running... |
...
If a service is not running, the start
sub-command can be used to launch it.
Code Block |
---|
|
[root@localhost ~]# service sqtopicd start
Starting sqtopicd: [ OK ] |
Stop service
Code Block |
---|
|
[root@localhost ~]# service sqtopicd stop
Stopping sqtopicd: [ OK ] |
If you now execute the status
sub-command, it will report the service as being stopped.
Code Block |
---|
|
[root@localhost ~]# service sqtopicd status
sqtopicd is stopped |
...
The restart
sub-command attempts to stop a service first and will then start it again.
Code Block |
---|
|
[root@localhost ~]# service sqtopicd restart
Stopping sqtopicd: [ OK ]
Starting sqtopicd: [ OK ] |
...
Name | Description |
---|
crond | Task runner that executed scheduled tasks regularly. |
elasticsearch | Main data storage for indexed data. |
monit | Service monitor used to automatically start services again when they are stopped. |
mysqld | Relational database used for storage of metadata about Squirro projects. |
nginx | Web server through which all the requests for the frontend and the Squirro services are served. |
redis-server | NoSQL database used for caching. |
sqbulkd | Bulk importing of data. |
sqcachecleansingd | Cleans the Varnish cache when data changes. |
sqclusterd | Controls multi-cluster setup of Squirro. See Clustering. |
sqconfigurationd | Manages application configuration. See Configuration Reference. |
sqcontentd | Extracts relevant content from web pages. See Boilerplate Noise Removal in the Data Loading and Processing manual. |
sqfeedd | Data provider for feeds. See Feed Provider in the Data Loading and Processing manual. |
sqfileimportd | Used to import CSV data through the web interface. |
sqfilteringd | Handles search tagging rules. See Search Tagging in the Data Loading and Processing manual. |
sqfingerprintd | Manages the fingerprints (Smart Filters). |
sqfrontendd | Frontend service, implementing the main web interface of Squirro. |
sqpipelined | Pipeline service. Manages the process of enriching and indexing data. See Data Enrichment in the Data Loading and Processing manual. |
sqplumberd | Executes pipelets as part of the pipeline. See Pipelets in the Data Loading and Processing manual. |
sqproviderd | Endpoint for the providers to import data into the system. See Providers in the Data Loading and Processing manual. |
sqrelatedstoryd | Detects near-duplicates as part of the pipeline. See Near-Duplicate Detection in the Data Loading and Processing manual. |
sqschedulerd | Executes scheduled jobs that the Squirro application needs to run. |
sqsourcerd | Finds data sources for input criteria, such as a query or a web site URL. |
sqsquirreld | Web crawler component. |
sqthumblerd | Calculates thumbnails for item images that are displayed in Squirro. |
sqtopicd | Endpoint for the Squirro API. See Working with Entities in the API Reference. |
sqtopicproxyd | Internal web service access to some project metadata. |
squserd | Endpoint for user management and authentication. See Authentication in the Reference manual. |
squserproxyd | Internal web service access to some user data. |
sqwebshotd | Analyzes web stories and identifies the most relevant image to use for visualization. |
varnish | Caching web proxy. Configured to sit in front of nginx. |