Note the string should be in single quotes. You signed in with another tab or window. * in the text box it grafana escapes the string and passes to influx Access. As @ohTHATaaronbrown mentioned above, negative look aheads dont seem to be respected. And if you need to match line break chars as well, use the DOT-ALL modifier (the trailing 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. 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 . regex: Using regex expression targeting classes names, it can be included and excluded in component scanning. By clicking “Sign up for GitHub”, you agree to our terms of service and 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. Grafana templating merge variables. * instead which influx doesn't take as a regex. Does regex supports excluding value derived from other variable ? Negative look ahead. SHOW TAG VALUES FROM system WITH KEY=host. /^(?!abc|.*demo|.*test)/. What datasource? If the resource name in Zabbix really ends after the interface name, matching end of string with '$' sign after the match string would be even easier. I also don't see where I specify that I want to perform this action against the instance tag. Regex-matches are fully anchored. Every capture group (re) will be set into the extracted map, every capture group must be named: (?Pre). !=: Select labels that are not equal to the provided string. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Get the most out … Now it looks like when I type Access. The text was updated successfully, … skip_database_creation = true ## Name of existing retention policy to write to. The following label matching operators exist: =: Select labels that are exactly equal to the provided string. Am I missing something there? I’m not sure if templates are the same across datasources. OK, I think I finally figured out the problem, and it's operator-headspace. Negative lookaheads are hard. daniellee May 26, 2017, 7:59am #3 Negative lookaheads are hard. I'd really like to see a way to exclude certain things from the list when using templating. http://graphite.readthedocs.org/en/latest/functions.html#graphite.render.functions.exclude. Sign in My regex line has: It is also possible to negatively match a label value, or to match label values against regular expressions. A quick refresher about the regex engine Remember that the engine has two "reading heads" which both move from left to right: one moves in the string, one moves in the regex pattern. Grafonnet consists of different functions we can use to create the JSON objects required to compose Grafana dashboards or panels. The regex doesn't error, but also doesn't seem to filter. )*$ Breakdown of Regex elements used ^ Beginning of the string Capturing Group (?!) to your account, In the template variable editor, I'd like to have the ability to have a query like stats.gauges.mycompany.instance. Or any other way to achieve this. Grafana Cloud. This document is meant as a reference. 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 use regular javascript regex expressions so anything that works with that should work, but it doesn't. It would be nice if Grafana template variables could have some string manipulations applied. A ‘regular expression’ is a pattern that describes a set of strings. For learning, it might be easier tostart with a couple of examples. 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. /^(?!.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. As mentioned, this is not something regex is “good” at (or should do), but still, it is possible. I can only glob positively: I can do something like stats.gauges.dovetail.instance. Import the re module: import re. I can speak to a graphite datasource. Nope, doesn't look like it. I hope it helps you out. The pattern is composed of a sequence of atoms. #Exclude all until remain what you want Can you help me , how to exclude below hosts on templating regex option, ansys001.example.local Python has a built-in package called re, which can be used to work with Regular Expressions. List or regex to exclude items from template queries. You can use regex in the influxdb query as well to filter, or the regex option in grafana. I want something like this for Prometheus, Var 1 : Prometheus query returns Stack1, Stack2, Stack3 Assigns the given alpha transparency setting to the series. Set to true when using ## Telegraf with a user without permissions to create databases or when the ## database already exists. I have a regular expression as follows: ^/[a-z0-9]+$ This matches strings such as /hello or /hello123. Something like: WHERE host !~ /^ansys*.example.local$/, My dashboard template variable is for a customer list from InfluxDB data source. alpha (seriesList, alpha) ¶. hint says: Regex match example: /server[0-3]/i . Grafana Enterprise version with additional capabilities is also available. Grafana ObservabilityCON 2020. The most important builtin functions for this is label_values. Using Grafana Version: v5.2.1. 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. To create template variable click the cog icon on the top navigation bar and choose Templating. The regular expression should find and return everything EXCEPT the text string in the search expression. A regex pattern matches a target string. Download. Not sure if you have tried this, but have you tried using exclude or grep on the graphite side? Regular Expression to exclude set of Keywords, Would return true if boon.ini or http was anywhere in your string. We’ll occasionally send you account related emails. Regex exclude multiple strings. Grafana 2.6 doesn't recognize the regex and show me no results. Live Demo. /dev.|uat.|demo.|prod.|pre.|poc./. privacy statement. That's in the render API, and it works great down in chart panels. The name of the capture group will be used as the key in the extracted map. no error, but no filtering, either, @ohTHATaaronbrown then please fix it :) 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. I thought globs were only for positive matching, not for excluding. To do this, we will use the following Regular Expression: ^((?!.*server.*). On-demand recordings of expert-led sessions on Prometheus, Loki, Cortex, Tempo tracing, plugins, and more. that's what i said in the first place. /(?=dev.|uat.|demo.|prod.|pre.|poc.)^(?!.postgres.|pgsql-service. I tried to exclude some hostname from the templating output. Grafana Enterprise. https://github.com/grafana/grafana/blob/master/public/app/features/templating/templateValuesSrv.js#L223. Var 2 : If I select Stack1, all services of Stack1. The '?' Takes a float value between 0 and 1. applyByNode (seriesList, nodeNum, templateFunction, newName=None) ¶. https://github.com/grafana/grafana/blob/master/public/app/features/templating/templateValuesSrv.js#L223, Metrics query does not work with negative lookahead. It provides charts, graphs, and alerts for the web when connected to supported data sources. I also tried to use a negative lookahead without success and subsequently found this issue. Using Regex for specific filter: Exclude a string. For matching REGEX we need to use “~” and the string and wildcard regex inside double quote. SELECT max (hrcrx_max_byt) * 8000 FROM indicators. The best place to run Grafana, Graphite, Prometheus, and Loki Get started for free Learn more. (i.e. But I would like receive only the FQDN (without a collon and a port number) . *$/ AND time > now () - 12h GROUP BY time (1m), p_nm custom: We can also create custom filter type by implementing org.springframework.core.type.TypeFilter. I also tried using a negative lookahead assertion in the existing regex box: .*(?!test). Step-by-step guides to help you make the most of Grafana. It would be nice if Grafana template variables could have some string manipulations applied. 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. 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. * 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. We recently merged #12597 which will be released in Grafana v5.3. Empty string writes to ## the default retention policy. # exclude_database_tag = false ## If true, no CREATE DATABASE queries will be sent. Description. It contains these sections: 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) Thanks for all. As SHOW TAG VALUES doesn’t support time in WHERE clause, I tried to exclude some down hosts using template regex option. Those don't go through the render API, so you can't use exclude. I would like populate values for variable in templating using query (a datasource: Prometheus). What is Grafana? Include and Exclude Filter using JavaConfig and XML Include and exclude filter syntax using JavaConfig is given below. However, I'm talking about the template variable queries that produce the template value dropdowns in the top section of a dashboard. To do what you are looking for, it wouldn’t be done in the regex… Regular Expression to Given a list of strings (words or other characters), only return the strings that do not match. An atom is a single point within the regex pattern which it tries to match to the target string. It is expandable through a plug-in system.End users can create complex monitoring dashboards using interactive query builders. this regex filters out everything that ends in test: regex is easy to get to match, but hard to get to not match. 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. Have you tried use the !~ operator (negative regex) in the the WHERE clause instead? They don't error, they just dont work. In this example we want to exclude everything that contains the string server. Not sure what the regex should look like. I just ran into this same issue with negative lookahead regex using Graphite backend. Using the native OH charts these values will be transformed to 1 or 0 and can be displayed in OH charts. Thus it required a more ellaborrate regular expression to match the first line. 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.) When you have imported the re module, you can start using regular expressions: Example. You can use regex in the influxdb query as well to filter, or the regex option in grafana. Details. expression needs to be a Go RE2 regex string.