The following table represents a list of user accounts Squirro creates at installation time.
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User Name
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Primary Group
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Description
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Related Services
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elasticsearch
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elasticsearch
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Main data storage for indexed data.
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elasticsearch
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mysql
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mysql
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MySQL database used for metadata storage. To investigate this metadata, MySQL can be accessed directly.
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mysql
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nginx
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nginx
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Manages nginx web server.
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nginx
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redis
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redis
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NoSQL database used for caching.
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redis-server, redis-server-cache
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sqclustr
...
squirro
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Controls multi-cluster setup of squirro.
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sqclusterd
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sqconfig
...
squirro
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Manages application configuration.
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sqconfigurationd
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sqcontnt
...
squirro
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Responsible for extracting relevant content from web pages. See Noise Removal in the Data Loading and Processing manual.
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sqcontentd
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sqdatasource
...
squirro
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Manages dataloading process.
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sqdatasourced
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sqeauth
...
squirro
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Responsible for managing authentication.
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squserd
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sqemails
...
squirro
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Responsible for sending out emails on behalf of Squirro
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sqemailsenderd
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sqfilter
...
squirro
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Handles search tagging rules.See Search Tagging in the Data Loading and Processing manual.
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sqfilteringrd
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sqfinger
...
squirro
...
Manages the fingerprints (Smart Filters).
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sqfingerprintd
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sqfront
...
squirro
...
Manages frontend servcice, implements main web interface of Squirro.
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sqfrontendd
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sqingest
...
squirro
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Manages process for enriching and indexing data.
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sqingesterd
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sqmailer
...
squirro
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Used for preparing the email digest
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sqdigestmailerd
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sqplumbr
...
squirro
...
Responsible for executing pipelets as part of the pipeline. See Pipelets in the Data Loading and Processing manual.
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sqplumberd
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sqprovid
...
squirro
...
Manages endpoints for the providers that import data into the system. See Providers in the Data Loading and Processing manual.
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sqproviderd
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sqptopic
...
squirro
...
Manages the Squirro API. See Working with Squirro APIs in the API Reference.
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sqtopicd
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sqrstory
...
squirro
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Detects near-duplicates as part of the pipeline. See Near-Duplicate Detection in the Data Loading and Processing manual.
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sqrelatedstoryd
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sqsched
...
squirro
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Responsible for executing scheduled jobs that the Squirro application needs to run.
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sqschedulerd
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sqthumb
...
squirro
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Calculates thumbnails for item images that are displayed in Squirro.
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sqthumblerd
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sqtproxy
...
squirro
...
Manages the web service access to some project metadata.
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sqtopicproxyd
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sqtrends
...
squirro
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Manages the trend detection survive to analyse trends in time-series data. For more info see Trend Detection.
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sqtrendsd
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squproxy
...
squirro
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Responsbile for manages the web service which gives access to some user data.
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squserproxyd
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squser
...
squirro
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Endpoint for user management and authentication. See Authentication in the Reference manual.
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squserd
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sqwebsht
...
squirro
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Analyzes web stories and identifies the most relevant image to use for visualization.
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sqwebshotd
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tika
...
squirro
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Responsible for extracting text from a variety of binary-based documents.
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tika
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zkeeper
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zkeeper
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Responsible for cluster coordination services.
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This page can now be found at Installing Squirro on Linux on the Squirro Docs site.