* in the text box it grafana escapes the string and passes to influx Access. But I would like receive only the FQDN (without a collon and a port number) . Grafana is a multi-platform open source analytics and interactive visualization web application. Grafana 2.6 doesn't recognize the regex and show me no results. this regex filters out everything that ends in test: regex is easy to get to match, but hard to get to not match. As SHOW TAG VALUES doesn’t support time in WHERE clause, I tried to exclude some down hosts using template regex option. Specifies a group that cannot match after the main expression. The name of the capture group will be used as the key in the extracted map. Live Demo. custom: We can also create custom filter type by implementing org.springframework.core.type.TypeFilter. We recently merged #12597 which will be released in Grafana v5.3. The initial query looks like: Grafana Enterprise. SELECT max (hrcrx_max_byt) * 8000 FROM indicators. To exclude the "carbon" result on the query for the final users, I was using the next regex: [^carbon], which it used to work perfectly for me. The best place to run Grafana, Graphite, Prometheus, and Loki Get started for free Learn more. The text was updated successfully, … For matching REGEX we need to use “~” and the string and wildcard regex inside double quote. toggle quoted message Show quoted text. When you click Newbutton, you'll see template variable editor. skip_database_creation = true ## Name of existing retention policy to write to. net001.example.local, Regex tried : /^(?!ansys.example.local$).*$/. Cheers, Pete. They don't error, they just dont work. Not sure what the regex should look like. Description. Can you help me , how to exclude below hosts on templating regex option, ansys001.example.local /(?=dev.|uat.|demo.|prod.|pre.|poc.)^(?!.postgres.|pgsql-service. !=: Select labels that are not equal to the provided string. /^(?!abc|.*demo|.*test)/. Template query to get the hostname from InfluxDB, I want something like this for Prometheus, Var 1 : Prometheus query returns Stack1, Stack2, Stack3 A quick refresher about the regex engine Remember that the engine has two "reading heads" which both move from left to right: one moves in the string, one moves in the regex pattern. Using Regex for specific filter: Exclude a string. Step-by-step guides to help you make the most of Grafana. It provides charts, graphs, and alerts for the web when connected to supported data sources. *$/ AND time > now () - 12h GROUP BY time (1m), p_nm You signed in with another tab or window. I thought globs were only for positive matching, not for excluding. Set to true when using ## Telegraf with a user without permissions to create databases or when the ## database already exists. Grafana has become the world’s most popular technology used to compose observability dashboards with everything from Prometheus & Graphite metrics, to logs and application data to power plants and beehives. The regular expression should find and return everything EXCEPT the text string in the search expression. You can use regex in the influxdb query as well to filter, or the regex option in grafana. Running Grafana 7. Negative lookaheads are hard. This document is meant as a reference. To do this, we will use the following Regular Expression: ^((?!.*server.*). Import the re module: import re. Negative look ahead. Python has a built-in package called re, which can be used to work with Regular Expressions. What datasource? This blog post describes how you can use the open source tools Influx and Grafana along with a PowerShell module I've authored on Windows to create and populate interactive metric and monitoring dashboards like this one: (-- note that all the graph labels and legends from the above screenshot have been removed to anonymize the data.) )*$ Breakdown of Regex elements used ^ Beginning of the string Capturing Group (?!) RegEx in Python. For example, if the word fox was what I wanted to exclude, and the searched text was: The quick brown fox jumped over the lazy dog. Var 2 : If I select Stack1, all services of Stack1. SHOW TAG VALUES FROM system WITH KEY=host. https://github.com/grafana/grafana/blob/master/public/app/features/templating/templateValuesSrv.js#L223, Metrics query does not work with negative lookahead. Every capture group (re) will be set into the extracted map, every capture group must be named: (?Pre). The text was updated successfully, but these errors were encountered: if your using graphite cant you do that with a glob expression? Something like: WHERE host !~ /^ansys*.example.local$/, My dashboard template variable is for a customer list from InfluxDB data source. "default".persecond WHERE device =~ /preprod-cvu400ng01$/ AND p_nm =~ /^Access. hint says: Regex match example: /server[0-3]/i . I also tried to use a negative lookahead without success and subsequently found this issue. Note the string should be in single quotes. I can only glob positively: I can do something like stats.gauges.dovetail.instance. A ‘regular expression’ is a pattern that describes a set of strings. For learning, it might be easier tostart with a couple of examples. Thus it required a more ellaborrate regular expression to match the first line. Assigns the given alpha transparency setting to the series. Include and Exclude Filter using JavaConfig and XML Include and exclude filter syntax using JavaConfig is given below. * and then another textbox to have either a regex (or at least a value list) to identify items i'd like to exclude from the variable's selection list. Regular Expression to exclude set of Keywords, Would return true if boon.ini or http was anywhere in your string. RegEx can be used to check if a string contains the specified search pattern. I can speak to a graphite datasource. The simplest atom is a literal, but grouping parts of the pattern to match an atom will require using () as metacharacters. However, I'm talking about the template variable queries that produce the template value dropdowns in the top section of a dashboard. Grafana ObservabilityCON 2020 On-demand sessions on Prometheus, Loki, Cortex, Tempo tracing, plugins, and more. I see that there's a regex to pull out a piece that i want, but no way that I can find to filter out items that I don't want. I tried to exclude some hostname from the templating output. Am I missing something there? It appears that Grafana is interpreting this as a literal string, and not performing any actions on the AliasSub function. Grafana templating merge variables. I'd really like to see a way to exclude certain things from the list when using templating. *{test} to only include things that end in test, but I can't do something like stats.gauges.dovetail.instance.*! By clicking “Sign up for GitHub”, you agree to our terms of service and Regex exclude multiple strings. http://graphite.readthedocs.org/en/latest/functions.html#graphite.render.functions.exclude. Get the most out … Using the native OH charts these values will be transformed to 1 or 0 and can be displayed in OH charts. It is also possible to negatively match a label value, or to match label values against regular expressions. As mentioned, this is not something regex is “good” at (or should do), but still, it is possible. The regex doesn't error, but also doesn't seem to filter. The pattern is composed of a sequence of atoms. Thanks for all. /^(?!.postgres.|.pgsql-service.|kubelet.|haproxy-ingress.|.mssql-service.|kube-state-metrics.|billing-service.|default-http-backend.*|.jenkins.|.multideploy-service.|.nginx-service.|.openedge-service.|.project-db-service.|.project-db-test-service.|.project.|.source-service.|.mysql.|.rabbitmq. * and then another textbox to have either a regex (or at least a value list) to identify items i'd like to exclude from the variable's selection list. firstline: '^\[\d{4}-\d{2}-\d{2} \d{1,2}:\d{2}:\d{2}\]' max_wait_time: 3s Custom Log Format. Ordinarily, if a regular expression includes an optional or alternative matching pattern and a match does not succeed, the regular expression engine can branch in multiple directions to match an input string with a pattern. And if you need to match line break chars as well, use the DOT-ALL modifier (the trailing Or any other way to achieve this. To create template variable click the cog icon on the top navigation bar and choose Templating. The previous example assumed you had no control over the log format. )/, #Exclude + Include feature (this is the best) I also don't see where I specify that I want to perform this action against the instance tag. Now it looks like when I type Access. that's what i said in the first place. You can use regex in the influxdb query as well to filter, or the regex option in grafana. no error, but no filtering, either, @ohTHATaaronbrown then please fix it :) Have you tried use the !~ operator (negative regex) in the the WHERE clause instead? Regular Expression to Given a list of strings (words or other characters), only return the strings that do not match. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. {test} to exclude things that end in test. I hope it helps you out. #Exclude all until remain what you want I have a regular expression as follows: ^/[a-z0-9]+$ This matches strings such as /hello or /hello123. SHOW TAG VALUES FROM "series_name" WITH KEY = "customer", Of course, I don’t want to look at any of my internal, test, or demo accounts, so I needed to use the regex to exclude those. It is expandable through a plug-in system.End users can create complex monitoring dashboards using interactive query builders. Powered by Discourse, best viewed with JavaScript enabled. # exclude_database_tag = false ## If true, no CREATE DATABASE queries will be sent. Setup: Windows 10, 64bit MqSQL DB OH2.2 Grafana 4.6.3 Dear all In OH I get for several items ON or OFF values which are stored in MySQL DB. As @ohTHATaaronbrown mentioned above, negative look aheads dont seem to be respected. Regex-matches are fully anchored. It contains these sections: Only takes effect when using HTTP. Already on GitHub? expression needs to be a Go RE2 regex string. OK, I think I finally figured out the problem, and it's operator-headspace. It would be nice if Grafana template variables could have some string manipulations applied. Nope, doesn't look like it. Perhaps I'm missing the full formatting of what gets put into the "Legend Format" area. I just ran into this same issue with negative lookahead regex using Graphite backend. Grafonnet consists of different functions we can use to create the JSON objects required to compose Grafana dashboards or panels. So in the regex field, why can't you do something like this /^(?!.*foo$).*$/. I would like populate values for variable in templating using query (a datasource: Prometheus). (i.e. Not sure what the regex should look like. I would like to use regex in the Series specific Overides so that all the writes are on the right side and all the reads are on the left. What is Grafana? Empty string writes to ## the default retention policy. This is working for me at this time. To do what you are looking for, it wouldn’t be done in the regex… If the above makes sense, I am thinking providing the following options could work better than my suggestion above: filter.name = datacentre filter.query = hosts. This will provide all metrics matching the given query, against which you could run a regular expression to extract a parameter, or split the result to extract a particular node index . Successfully merging a pull request may close this issue. I know that I can use structure like: label_values({job="nodes"},instance) and I received something like: node1.example.com:9100, node2.example.com:9100, etc. I can do a positive lookahead assertion, though. This could be useful to be able to refer to data about the same thing from various datasources from a variable, where that thing is named slightly differently for technical reasons. I’m using the negative lookahead as daniellee mentioned, but since this is in the templating section and not the metrics, it’s a little different. *)/, #Include-only to your account, In the template variable editor, I'd like to have the ability to have a query like stats.gauges.mycompany.instance. Takes a float value between 0 and 1. applyByNode (seriesList, nodeNum, templateFunction, newName=None) ¶. It would be nice if Grafana template variables could have some string manipulations applied. Those don't go through the render API, so you can't use exclude. The '?' An atom is a single point within the regex pattern which it tries to match to the target string. List or regex to exclude items from template queries. Have a question about this project? In the template variable editor, I'd like to have the ability to have a query like stats.gauges.mycompany.instance. Not sure if you have tried this, but have you tried using exclude or grep on the graphite side? Using Grafana Version: v5.2.1. I’m not sure if templates are the same across datasources. I've tried using /host-[0-9][0-9]/.writekbs and varous variations on that theme trying to get a regex to match but I am having no luck. /dev.|uat.|demo.|prod.|pre.|poc./. daniellee May 26, 2017, 7:59am #3 Negative lookaheads are hard. Something like chained variable but now in templating ! If the resource name in Zabbix really ends after the interface name, matching end of string with '$' sign after the match string would be even easier. RegEx Module. @gerrickw Yeah. That's in the render API, and it works great down in chart panels. Does regex supports excluding value derived from other variable ? Grafana ObservabilityCON 2020. privacy statement. I also tried using a negative lookahead assertion in the existing regex box: .*(?!test). A regex pattern matches a target string. The following label matching operators exist: =: Select labels that are exactly equal to the provided string. https://github.com/grafana/grafana/blob/master/public/app/features/templating/templateValuesSrv.js#L223. * instead which influx doesn't take as a regex. On-demand recordings of expert-led sessions on Prometheus, Loki, Cortex, Tempo tracing, plugins, and more. Download. Sign in We’ll occasionally send you account related emails. It won't You can see the context here: Regex to Exclude Multiple Words. Grafana Cloud. The most important builtin functions for this is label_values. not sure which RegEx engine Grafana is using, but my first shot would be to put '\b' (word boundary anchor) after the match string. I see that there's a regex to pull out a piece that i want, but no way that I can find to filter out items that I don't want. regex: Using regex expression targeting classes names, it can be included and excluded in component scanning. Details. alpha (seriesList, alpha) ¶. In this example we want to exclude everything that contains the string server. The regex above will match any string, or line without a line break, not containing the (sub)string ‘hede’. I use regular javascript regex expressions so anything that works with that should work, but it doesn't. Grafana Enterprise version with additional capabilities is also available. From: grafana@groups.io [mailto:grafana@groups.io] On Behalf Of pavan p Sent: Wednesday, 15 February 2017 9:58 p.m. To: grafana@groups.io Subject: [grafana] using regex in grafana templating (For influxDB as datasource)