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What is a series in influx?
In InfluxDB, a series is a collection of points that share a measurement, tag set, and field key.
What is InfluxQL?
See the equivalent InfluxDB v2. 2 documentation: Query fields and tags. InfluxQL is an SQL-like query language for interacting with data in InfluxDB. The following sections detail InfluxQL’s SELECT statement and useful query syntax for exploring your data.
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What is measurement in influx?
influxdb Querying Influx Show measurements
When compared to a other database types, a measurement in Influx can be considered, on a very high level, as being similar to a table in relational databases or a collection in document databases. List all measurements for the currently active database: $ show measurements.
How do I connect to influx?
- Download and install InfluxDB. There are several ways to interact with InfluxDB, including the following: HTTP API and client libraries. …
- Connect to InfluxDB’s Command Line Interface. …
- Create your first database or Import from your existing InfluxDB Instance. …
- Write data to your database. …
- Query data in your database.
What is flux InfluxDB?
Flux is InfluxData’s functional data scripting language designed for querying, analyzing, and acting on data. These guides walks through important concepts related to Flux and querying time series data from InfluxDB using Flux.
What is a bucket name in InfluxDB?
A bucket is a named location where time series data is stored. All buckets have a retention period, a duration of time that each data point persists. InfluxDB drops all points with timestamps older than the bucket’s retention period. A bucket belongs to an organization.
What is cardinality in InfluxDB?
series cardinality
The number of unique database, measurement, tag set, and field key combinations in an InfluxDB instance.
Should I use flux or InfluxQL?
InfluxQL lets you group by tags or by time intervals, but nothing else. Flux lets you group by any column in the dataset, including _value . Use the Flux group() function to define which columns to group data by.
How do I create a new measurement in InfluxDB?
In INFLUX DB , you cant create empty measurements. You need to add some data as well. You can check Field and tag keys by executing show field keys or show tag keys . In this way, you can create measurement with specifying your required field and tag keys.
How does InfluxDB work?
InfluxDB organizes data on disk into immutable runs of values for a single column of a series. A delete operation needs to undo a lot of that work for a subset of points. In InfluxDB, deleting a row from the database produces a tombstone. A tombstone includes a series key and the min and max time of the deleted range.
What is a point of influx?
2. The definition of an influx is an inflow or the arrival of large amounts of people or things. When twenty people arrive at your house all at the same time, this is an example of an influx. noun. The point where a body of water, as a river, joins another body of water.
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How does InfluxDB store data?
InfluxDB stores data in shard groups. Shard groups are organized by retention policy (RP) and store data with timestamps that fall within a specific time interval called the shard duration. The shard group duration is also configurable per RP. To configure the shard group duration, see Retention Policy Management.
How do I create an InfluxDB user and password?
…
Set up authentication
- Create at least one admin user. See the authorization section for how to create an admin user. …
- Enable authentication in your configuration file by setting the auth-enabled option to true in the [http] section: …
- Restart InfluxDB.
How do I create an InfluxDB database?
- a – Launch the InfluxDB CLI. …
- b – Verify that you have admin rights on the InfluxDB server. …
- c – Create your InfluxDB database. …
- a – Using cURL. …
- b – Using Postman. …
- a – Creating a database in Java.
What is chronograph InfluxDB?
Chronograf allows you to quickly see the data that you have stored in InfluxDB so you can build robust queries and alerts. It is simple to use and includes templates and libraries to allow you to rapidly build dashboards with real-time visualizations of your data.
How do I run flux in InfluxDB?
…
In your request, set the following:
- Accept header to application/csv.
- Content-type header to application/vnd. flux.
- If authentication is enabled on your InfluxDB instance, Authorization header to Token <username>:<password>
What language does InfluxDB use?
InfluxDB is an open-source time series database (TSDB) developed by the company InfluxData. It is written in the Go programming language for storage and retrieval of time series data in fields such as operations monitoring, application metrics, Internet of Things sensor data, and real-time analytics.
How do I get InfluxDB tokens?
Create a token using the InfluxDB API
Use the /api/v2/authorizations InfluxDB API endpoint to create a token. Use the Authorization header and the Token scheme. Pass as orgID in the request body. Pass as a permissions array in the request body.
What is retention policy in InfluxDB?
A retention policy (RP) is the part of InfluxDB data structure that describes for how long InfluxDB keeps data. InfluxDB compares your local server’s timestamp to the timestamps on your data and deletes data that are older than the RP’s DURATION . A single database can have several RPs and RPs are unique per database.
How do I query InfluxDB from Grafana?
- Add a panel.
- In the query editor, select your InfluxDB-Flux data source. For more information, refer to Queries.
- Select the Table visualization.
- In the query editor text field, enter buckets() and then click outside of the query editor.
What is Prometheus cardinality?
In the world of Prometheus and observability, label cardinality is extremely important because it impacts the performance and resource usage of your monitoring system. To put it simply: Cardinality is the overall count of values for one label.
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Is high cardinality good or bad?
Having high cardinality data isn’t a bad thing, and knowing that our data is complex can help us find issues specifically tied to this. If you have performance or stability issues in your database, then it’s worth trying to lower the cardinality to fix those problems.
What is InfluxDB client?
InfluxDB client libraries are language-specific packages that integrate with the InfluxDB 2.0 API and support both InfluxDB 1.8+ and InfluxDB 2.0.
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