...
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 |
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[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. |