Grafana expression. For more information about PromQL, see Querying Prometheus. All my field names looks like and i want to use override option to show only K1, E2, etc. InfluxDB query language is very limited Use Grafana to query and visualize data stored in InfluxDB Cloud Serverless. Apr 5, 2021 · I think thas is because of Grafana considere only “+” as a layering of these values, and don’t conside the count number as a number: 1 1411×316 30. Opinionated solutions that help you get there easier and faster Mar 2, 2021 · If I understand correctly, you want to time shift your single stat panel at #2. ) Locate the Grafana configuration file. Expressions are primarily used by Grafana Alerting. Trying to figure out how to use the expression feature within the panel where the query feature is. All nulls. [Grafana] enables you to query, visualize, alert on, and explore your metrics, logs, and traces wherever they are stored. This works and gives me a good result eg 45, 60, 55. Aug 22, 2023 · Output of each query is a simple two rows / two columns table like on the following image. But I also applied the transform “Labels to fields”. and can handle complex conditions. HTH. e. 1. So my understanding is this one should return 0 if there are no series (no data). The following table contains a list of calculations you can perform in Grafana. On the Panel tab, click Thresholds. But I want to calculate the altitude from this pressure values. True when all values are null. Can anyone please help me in resolving the issue. How are you trying to achieve it? I tried using Rename by regex transformation but instead of renaming the values it Prometheus template variables. Search for the SMTP settings section in the configuration file. Click Add threshold. The first string is the JSON string used look up values. Create, manage, view, and adjust alert rules to alert on your metrics data or log entries from multiple data Jun 19, 2023 · area/expressions Server Side Expressions (SSE) needs investigation for unconfirmed bugs. It also contains a condition, which is the threshold that an alert rule must meet or exceed in order to fire. Evaluation Group 1 Dec 22, 2021 · I am trying to do simple addition using Transform : Add field from calculation. Mar 23, 2017 · Series Overrides You can customize display options on a per series bases, or by using regex rules. Oct 21, 2020 · Scenario: I have grafana with influxDB monitoring my unRAID NAS which has: a) 3 Array disks b) 2 Cache disks c) 3 Pool disks d) 1 Backup disk I’m trying to setup a panel to show disk “load” for each group (a, b, c and d) where load means the maximum io_time of any disk in that group, e. If no values are returned from variables, it ll be blank. For instructions on how to add a data source to Grafana, refer to the administration documentation . go" and !="out of order". Nov 16, 2022 · Here is an alert that I have: Two queries (A and B): Two reduce expressions (C and D) and one math expression (E) that uses C and D. In addition, the Threshold expression is the alert condition by default. PromQL is the querying language that is part of Prometheus. First, let’s go over the different types of alert rules you can create in Grafana 9. Dec 27, 2021 · Math expression wrong results. Check it out here: Syntax · google/re2 Wiki · GitHub . Grafana Configuration. you can use math expressions in InfluxDB select clause like select mean (“value”)*100. 2. Documentation Grafana Agent Flow mode Concepts How-to articles, best practices, troubleshooting, cool projects, and more from our blog Using Grafana Alerting, you create queries and expressions from multiple data sources — no matter where your data is stored — giving you the flexibility to combine your data and alert on your metrics and logs in new and unique ways. some_text: key1=val1, key2=val2, So a regular expression like /key1=([^,]*)/ would for example extract val1. Enter 0. The json_path function lookup values using jsonpath syntax. The key will be # the key in the extracted data while the expression will be the value, # evaluated as a JMESPath from the source data. But when one of the field is having no data the calculation don’t work. 3 with influxdb backend. I. json: # Set of key/value pairs of JMESPath expressions. The second string is the jsonpath expression. Although you’ll use it to collect logs, the Grafana Agent is also known for its versatility in . How do we handle such a scenario. Grafana Agent: You can think of the Grafana Agent as a telemetry collector for the LGTM stack. Show the options and enter “1d” into the text box with label “Time shift”. Folder/Namespace. Metric queries extend log queries to calculate values based on query results. Click the Transform tab. Features a regex quiz & library. json_path always returns a list of values. Grafana lists these variables in dropdown select boxes at the top of the dashboard to help you change the data displayed in your dashboard. I currently have the following code {application=&quot;app&quot;, environment=&quot;Produc Apr 14, 2020 · Had the same issue trying to access the gitlab Prometheus service from a Grafana instance in Kubernetes (observability helm chart). Of the log lines identified with the stream selector, the query results include only those log lines that contain the string “metrics. And how do I write an expression to select all servers except SERVER_B? torkel August 16, 2017, 6:12pm 2. I have now a Stat visualization that has a math expression that return a value and according to the value I created value mapping with range that maps the number into a text, e. With Grafana Play, you can explore and see how it works, learning from practical examples to accelerate your development. I wouldn’t expect value-mapping, and especially regex-based value mapping to be fully interoperable with template variables. You can find these calculations in the Transform tab and in the bar gauge, gauge, and stat visualizations. Use label as metric in Grafana Prometheus source. Alert rules in Grafana Alerting and Prometheus are organized in an hierarchical structure. Map the data again, this time to do the calculation you want. It seems that only log lines at bottom will be highlighted with matched words (no matter descending or ascending order), and the Feb 25, 2023 · Hello there! What Grafana version and what operating system are you using? I am running Grafana 9. "Lampotila_1" WHERE time > ago(24h) AND measure_name = 'temperature_282E4A96F0013C53'. [source: <string>] expression needs to be a Go RE2 regex string. Problem: When trying to use the Resample expression, no data is returned (removing this expression shows data is being pulled through without it) Scenario: I have a number of smart plugs reporting power usage data and am trying to get the sum total of all values at any given time We are migrating an existing grafana report (v9. It can span multiple different data sources like SQL, Prometheus, InfluxDB, etc. Grafana Cloud. Using Grafana 8. it possible to perform simple calculations on the metrics while retrieving them from database? I mean something like a+b, b-c, (a+b+c)/(d+e+f). karagyozovt October 10, 2022, 8:31am 1. Description. lt or gt - Select lt for less than or gt for greater than to indicate what the threshold applies to. uwjhn December 22, 2020, 7:36am 1. Grafana visualizes what is returned by the query. Give it a try using Grafana Play. Actually you cannot use CASE - Grafana does direct substitution on template variables. In addition to PromQL, Prometheus provides a scraper that fetches metrics from instances (any application providing metrics) and a time series database (TSDB), which stores these metrics over time. */ expression. torkel October 4, 2017, 7:09pm 3. vitaliy August 15, 2017, 6:55am 1. I want to create a third query to show Prometheus query editor. So for example, say I have a query returning container IDs: And I only wanted the container IDs that ended with the letter "b". Every capture group (re) will be set into the extracted map, every capture group must be named: (?P<name>re). All component Expressions represent or compute values you can assign to attributes within a configuration. Oct 4, 2017 · Here’s a partial screenshot of simple division performed on a Grafana metric. Select a pre-set color in the Colors tab or set a custom color in the Custom tab That's definitely possible. You can migrate from the old Graph visualization to the new time series visualization. 8) to Grafana (9. 7 to 9. The report has a math expression and we found 2 issues with this math expression. May 21, 2019 · Is it possible to use CloudWatch math expressions together with multi-value template variables? For instance see screenshot: I have a template variable that is a list of all Firehose names and I want to query a particular metric that requires post-processing (normalization to rate/second) in CloudWatch math expressions. I’m trying to use expression over a MS SQL Server. Jan 7, 2024 · Hm, this seems interesting but I have to dig in first because at a first glance it has no value mapping. Jan 19, 2023 · Can i use EXP and Power function in grafana expression queries? tetramonium April 12, 2023, 9:02pm 2. state {Device :E2} Jan 22, 2024 · “@yosiasz - Go, hence Grafana uses RE2 regexp which does not support a lot of things. jasonhebron1 June 5, 2023, 11:14pm 1. You can use templates to include data from queries and expressions in labels and annotations. state {Device: K1} zigbee2mqtt. I am basically validating two queries with different conditions but with an OR Operator in between. Time series visualizations are the default and primary way to visualize time series data as a graph. Jul 22, 2020 · Filter your data on the two field names. After that, you can even do a mapping to that value if you want to express better what it means, specially when 0 means OK/Healthy/etc. Elements within the list are indexed by whole numbers, starting with zero. The first issue is the definition of the datasource for an expression, in our old report this is defined as Aug 24, 2016 · 1. [Grafana] provides you with tools to turn your time-series database (TSDB) data into insightful graphs and visualizations. Nov 21, 2021 · What Grafana version and what operating system are you using? grafana 7. You can read more about queries and conditions here. If this is Grafana v7, above the query should be a pull down menu with “Query Options”. T1 - Both values are required to display a threshold. For the extraction of variables there is a mechanism to parse and pick, see. If the jsonpath expression does not match any values, an empty list is returned. Open the configuration file: Open the configuration file using a text editor. Expressions represent or compute values you can assign to attributes within a configuration. Then, you can use this query in Grafana alerting (menu option in the left) and define a threshold and a bunch of other things that make up your alert. (You might want to select “Hide time info”, too. I have a list of servers in Host. Bummer, but not surprised that this doesn’t work. Read more about why we recommend migrating to Grafana Alloy. However, expressions can also be used with backend data sources and visualization. end-to-end solutions. This query outputs one normalised Dec 23, 2019 · Grafana Labs Community Forums "query timed out in expression evaluation" Grafana Feb 18, 2024 · Morning, I tried this weekend to convert values in kelvin to celcius, using EXPRESSION, and I don’t understand, when I enter the formula, I have the datas which disappears from the dashboard. Data source queries. If series is of zero length, the sum will be 0”. Blocks You use Blocks to configure the Grafana Agent’s behavior as well as Grafana Agent Flow components by grouping any number of attributes or nested For Grafana workspaces that support Grafana version 9. Grafana Explore Metrics is a query-less experience for browsing Prometheus-compatible metrics. Login with your admin user (default admin/admin). 7 (d2cccfe91e), self-hosted Grafana Under Linux OS. Below the query, click Expression. To change the series data color, follow these steps: Navigate to the panel you want to update. I had the same issue, tested on regex101, then the pattern did not work in Grafana, then learned that RE2 and PCRE2 are two different things. Queries in Grafana can be applied in various ways, depending on the data source and query language being used. Includes the full Grafana observability stack; Free access for 3 users, 10k metrics, 50GB logs and 2 week data retention Mar 10, 2022 · Then I have 3 reduce expressions (Reduce, Sum) D reduces A E reduces B F reduces C According to Grafana’s documentation for Reduce used with Sum function: “Sum returns the total of all values in the series. Mar 31, 2017 · 97. Grafana Time Series Panel. Queries act as if they are a distributed grep to aggregate log sources. You use expressions when you configure any component. regex: # The RE2 regular expression. Jan 11, 2022 · is it possible to sum two or more metrics with influxql (or may be with flux) rather than stacking graphs or executing an expressions on them ? For example - sum of two metrics: uplink and downlink traffic. I found out how how to apply simple calculations like /100 (see the following screenshot) which works. (NOTE: this plugin is now in maintenance mode, no new features will be added. g. but that is about it. For general documentation on querying data sources in Grafana, see Query and transform data. ini and is located in the conf directory within the Grafana installation directory. Hover over any part of the panel to display the actions menu on the top right corner. 0. Then you can use the plus button to add any override. Only users with the organization administrator role can add data sources. Notice how the application name from the log line is filled in as the alias property in the target Dec 7, 2021 · Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java. Dec 10, 2021 · What Grafana version and what operating system are you using? Grafana 8. Calculation. Than I combine query results in simple math expressions like on the following image (test_a, test_b, and so on - references to queries). x Issue: Under variable templates I am able to pass variables to 2 Queries without any problem and Grafana renders the time series as intended. lethe3000 June 28, 2020, 11:56am 1. Feb 7, 2023 · expressions, dashboard. Grafana give is a result but it is not the result of the two value muliplicaiton please see snip below. Same question for me. I have a dashboard panel which does an influx query to sum a number of metrics - (eg Metric1 + metric2 + metric3 ) - call this A. x, see Working in Grafana version 9. 4 when the problem started, but I have since upgraded to v1. I also see no reason why it would be a code smell, some elaboration on that point would be good. Jun 25, 2021 · Math Expressions & Queries. Each switch has a “ramFree” and a “ramUsed” column that contains an amount of bytes. Feb 28, 2024 · How do I incorporate if/else logic in PromQL based on the value of a Grafana query variable? Grafana Alloy is the new name for our distribution of the OTel collector. Grafana InfluxDB. I’m fetching temperature data from AWS timestream, which works ok, using these queries: SELECT * FROM "PartalaDB". I have attached the screenshot for your reference. Thanks @grant2, in your Math Expression is slightly different from mine. Than I have a result query defined as. – Grafana documentation. I solved it by changing the HttpMethod from POST to GET in the Data Source configuration. For a complete list of transformations, refer to Transformation functions. Configure alert rules. Hi, I’m new to Grafana, and I’m having some problem with expression. Similarly labels= { service=api} refers to the labels, and value=6. I am trying to create a influxdb query which selects pressure values and apply a math function on them. What datasource do you use? Apr 28, 2022 · Grafana version: * Grafana v8. So correct question will be how to return absolute values from my query? Aug 9, 2022 · Grafana Dashboards. triage/needs-confirmation used for OSS triage rotation - reported issue needs to be reproduced type/feature-request Expressions. Locate SMTP settings section. Click on the “App metrics” link. The two queries return the total number of things and the total number of successful things. I have recently upgraded grafana from 6. Color & Point Overrides In the above graph you can see points, lines and y-axis overrides using Aug 1, 2022 · The 3 alert rules in Grafana Alerting. When using the template variable in a plain CloudWatch query, everything Mar 30, 2022 · The Grafana version we use is v8. ini or custom. Feb 7, 2020 · When the variable returns null, the mysql query fails since the IN clause contains an empty list. There is also a similar RED expression. LogQL uses labels and operators for filtering. jawadsaadi December 27, 2021, 2:37pm 1. I have tried different syntax on formula, same. regex. You find series override in Display tab: After you click on Add override you specify a series name or regex by wrapping the expression in / chars. Once you've filtered for the desired events you can wrap them into a "count_over_time" statement and get a graph out of your events. The function expects two strings. expression: <string> # Name from extracted data to parse. ” Help with any other solution. There are two types of LogQL queries: Log queries return the contents of log lines. 3) on AKS. 789 refers to the value. Aug 6, 2021 · Grafana shows 0 when doing a math expression combining two AWS Athena queries grafana/athena-datasource#106 Feb 4, 2020 · Introduction to PromQL, the Prometheus query language. 9 KB Mar 22, 2022 · Hi all. We recommend using the Infinity data source plugin instead) The Grafana JSON Datasource plugin empowers you to seamlessly integrate JSON data into Grafana. The result of an expression can either be shown as a graph, viewed as tabular data in Prometheus's expression browser, or consumed by external systems via the HTTP API. Open side menu (click the Grafana icon in top menu) head to Data Sources and add your data source. 4. For options and functions common to all query editors, see Query editors. This tutorial will use Grafana dashboards to visualize logs, run queries, and set alerts. Prometheus provides a functional query language called PromQL (Prometheus Query Language) that lets the user select and aggregate time series data in real time. My query looks like this: SELECT sum (diff) from ( select non_negative_difference (“value”) as diff FROM “counter” WHERE Aug 17, 2016 · Note: I'm using grafana. Grafana ships with built-in support for Amazon CloudWatch. tjw74 June 25, 2021, 2:17am 1. Click a transformation. Dec 22, 2020 · Absolute Values in Graphs. Note. Instead of hard-coding details such as server, application, and sensor names in metric queries, you can use variables. With them being turned on - execution time goes to up 60 seconds and resource consumption on backend jumps to > 10 gigs of ram. # # Literal JMESPath expressions can be done by wrapping a key in # double quotes, which then must be wrapped in single quotes in # YAML so they By default, Grafana sets the colors of your series data, but you can change them through the panel legend. This will work for any datasource. Good day. A split view is opened and the target query is run. I made a simple math expression that multiplies two queries . 2 as threshold value. Map the data to get rid of whatever columns and other stuff you don’t want. For more information on queries and expressions, see Query and transform data. Thanks in advance. This topic describes queries, templates, variables, and other configuration specific to the CloudWatch data source. Data Source Elastic Search Version > 7. 9 KB 2 1412×323 34. Grafana. Open the panel. All values. Expressions. string: A sequence of Unicode characters representing text, like "Hello, world!". Prometheus has an or logical binary operator, but what you're asking about here is vector selectors. I am facing the same here. com, you can configure a regular expression value mapping so that Grafana displays www and truncates the domain. If you want to have a zero when a time series is showing no data, you can add or vector(0) at the end of your query. The plug-in was at v1. Grafana Agent has been deprecated and is in Long-Term Support (LTS) through October 31, 2025. Template labels and annotations. You can write CASE statement in your query . Grafana provides a query editor for the Prometheus data source to create queries in PromQL. The hierarchical structure. In the legend, click the color bar associated with the series. I would like to start with some simple things like add or subtract a static number from the latest value. Without RED, ORANGE and OVERALL expressions overall queries execution time is less than 1s. 6. Quickly find related metrics with just a few simple clicks, without needing to write PromQL queries to retrieve metrics. These two queries perform as I expect and show results as I expect. 3/8. Regards, Bill. What are you trying to achieve?; Use Expression math along with a query that Querying Prometheus. 6 When i try to create a expression in a new dashboard panel, it is not showing operations and expression options to add. 5. This file is typically named grafana. Navigate to the panel where you want to add one or more transformations. Grafana’s go-to plugin for cases when native plugin doesn’t exist yet. wfjm January 11, 2022, 2:30pm 4. Click the menu and select Edit. Search Expression highlight works well at Explore with loki datasource, but works wierd at panels with type logs. What I want to do is perform a simple math operation to get the percentage of used ram for each switch by doing the following equation: (ramUsed / (ramFree + ramUsed)) * 100 I am able to do this using the “Math Expression” feature after the Jun 5, 2023 · Grafana expression using If / Then. For more information about expressions, refer to About expressions. use type/bug for confirmed bugs, even if they "need" more investigating prio/medium Important over the long term, but may not be staffed and/or may need multiple releases to complete. The rule consists of one or more queries and expressions, a condition, the frequency of evaluation, and optionally the duration over which the condition is met. Special 5 days ago · Expression “B”, selects the last value of our query “A”, while the Threshold expression “C” will check if the last value from expression “B” is above a specific value. When I want to do a math operation under expressions between the results of Query A and Query B I am getting results. The price per KWH multiplied by current consumption. wlargou December 27, 2021, 3:28pm 2. Universal data source plugin for pulling data from various systems into Grafana using existing REST APIs. 3. Aug 15, 2017 · Regular expressions: Select all except. If empty, uses the log message. Hello all, I am looking for your help to replace name field with regex expression. Basic expressions are literal values, like "Hello, world!" or true . regex-based mapping is relatively new, while template variables are probably among the most sophisticated frontend logic in Grafana. example. 5; host OS unknown What are you trying to achieve? In a Stat panel, I have two queries that query AWS CloudWatch. They’re versatile enough to display almost any time-series data. if 1 of the 3 disks in my “array” group is maxed out that should translate to 100% load for the We are using Grafana Cloud which is currently Grafana v9. bool: A boolean value, either true or false. LogQL is Grafana Loki’s PromQL-inspired query language. An alerting rule is a set of evaluation criteria that determines whether an alert is initiated. Grafana Agent will reach an End-of-Life (EOL) on November 1, 2025. For example, you might want to set the severity label for an alert based on the value of the query, or use the instance label from the query in a summary annotation so you know which server is experiencing high CPU River uses the following types for its values: number: Any numeric value, like 3 or 3. For example, if a value is www. Expand table. An alert rule consists of one or more queries and expressions that select the data you want to measure. The formula for this is the following: Dec 17, 2019 · Dear sir / madam! Is there any way to implement IF-ELSE-CONDITION (or something similar) in the query editor depending on the value of the variable? Apr 13, 2023 · The challenges of searching across Grafana alert rules 1. Oct 10, 2022 · Grafana Dashboards. Use the Regex mapping when you want to format the text and color of a regular expression value. You use expressions when you configure Jun 28, 2020 · Grafana logs panel cannot highlight search expression. 4 available for download no problem at all (expression is correctly parsed and executed) while I cannot use it if I compile myself grafana from source (both in Windows11 and Ubuntu): i get a “runtime error: invalid memory address or nil pointer dereference” and grafana crashes. Time series. Here I'm using Prometheus, but again the actual query and datasource does not matter. tetramonium All. But I get The ATTRIBUTE_VALUE can be either a constant value of a valid River type (for example, a string, boolean, number), or an expression to represent or compute more complex attribute values. array: A sequence of values, like [1, 2, 3]. A Regex mapping maps regular expressions to text and a color. 0: Grafana-managed alert A Grafana-managed alert is a rule that is stored and executed by Grafana itself. go” and do not contain the string “out of order”. Mar 16, 2021 · Grafana Time Series Panel. CRUCIAL: do a pivot to create separate columns based on your field names. 5 (the latest) but the issue still occurs. BlueOrbit March 16, 2021, 12:30pm 1. 0 (769132c5eb). Use the dot notation to refer to the columns you want. Schema. With builded version 8. Grafana draws a threshold line along the Y-axis at that value. Expressions do not work with legacy dashboard alerts. you cannot divide one query against the result of another. Each capture group must be named. Or In Grafana, all queries and expressions are identified by a RefID that identifies each query and expression in an alert rule. You can then create, manage, and take action on your alerts from a single, consolidated view, and improve Correlation links in Logs panel. This problem happens JSON API data source for Grafana. I have time series data, timestamp and value. JSON is a versatile and widely used data format, and with this plugin, you can Apr 12, 2023 · Grafana: Grafana is the leading open source visualization tool. Write an expression. 11 debian 9. I can select all servers using the /. Rohan November 16, 2022, 9:54pm 3. Create a free Grafana Cloud Account. What are you trying to achieve? I want to rename the values of one of the columns of my rows using a RegEx expression. At the top level, we have folders (namespaces for Prometheus), which contain evaluation groups; inside them, we have alert rules. They can render series as lines, points, or bars. 14. jfrilander August 9, 2022, 3:59pm 1. Jul 30, 2023 · I am using the line_format to create a nicer log message and I want to filter out some nested json labels. You can use a regex for this {job=~"traefik|cadvisor|prometheus"}, however that you want to do this is a smell. I could enter the /b$/ regex to match results May 12, 2022 · I am using Prometheus database to store data of switches. How do I have to set up Grafana to get absolute values of my mixed positive and negative data set from InfluxDB? jangaraj December 22, 2020, 9:51am 2. A link “App metrics” and “Service metrics” show next to variables extracted out of the log line with transformations. zigbee2mqtt. Grafana Labs. Calculation types. Grafana refers to such variables as template variables. To fix that I tried to fill it with 0, but it is not working. There are two line filters: |= "metrics. 1 what expression should I use to output two metrics in grafana from prometheus. Value - Enter a threshold value. Dec 28, 2021 · The data comes from log messages of the form. If your data source supports them, then Grafana displays the Expression button and shows any existing expressions in the query editor list. May 14, 2024 · Start your grafana server. But, you can use the regex field inside Grafana. Expressions may also do things like refer to values exported by components, perform arithmetic, or call functions. Apr 28, 2022 · Looking forward to your reply. The processing is done server-side, so expressions can operate without a browser session. vf zg za td ec yy uu lh sn iz