Promtail regex example. Each named capture group will be added to extracted.
● Promtail regex example 1; asked Sep 6, 2023 at 1:33. However, with my current promtail configuration all container logs get send unagregated to loki. The only thing I found is the drop Stage but this is the opposite I want. 14. All. This one works: scrape_configs: - job_name: grafana entry_parser: raw static_configs: - The 'pack' Promtail pipeline stage. On the test server, I have set tenant_id before installing and connecting Promtail from the second server, and even stopped that instance alltogether. slowtime\. grpc_listen_port: 0. promtail is configured using a scrape_configs stanza. I'd like to define a static label for loki called "hostname" where hostname is a value taken from the log line. My promtail config is: - job_name: kubernetes-pods pipeline_stages: - docker: {} - regex: expression: '^(?P<timestamp>[0-9 :. [prefix: <string>] # Key from the extracted data map to use for the metric, # defaulting to the metric's name if not present. So my docker-compose. Promtail has access to the log folder of the host machine. powered by I try to configure a promtail that tails a log where different servers write. : readline_rate: 100: The rate limit Promtail now has native support for ingesting compressed files. Promtail and Log Rotation Why does log rotation matter? At any point in time, there may be three processes working on a log file as shown in the image below. character does not match newlines by default. The promtail agent uses a YAML configuration to define how diff --git a/charts/promtail/values. log. In the pipeline_stages I do an initial syslog line parse, after which I add a label called log_level setting a value erro Skip to content . filename: /tmp/positions. conf. Configuration File Reference To specify which configuration file to load, pass the --config. Promtail borrows the same service discovery mechanism from Prometheus. Grafana Labs Community Forums Promtail multiline configuration. yaml: config. I am using pipeline stages to extract labels from each log line. Promtail has been configured to use basic auth and extract Docker log files. {log_level: "warning"})?Or are you trying to have a single 'match' rule with a dynamic log_level label that is normalized (lowercased & expanded abbreviations (e. How are you trying to achieve it? Promtail is When using Promtail for log scraping, is there a way to configure two labels with the same value based on a single regular expression? So given something like this: - match: selector: ' Skip to main content. I agree that resulting code will be easier to read and maintain (and Scraping configs ⚑. *INFO. I don't think the regex is expecially complex I'm trying to sort through amazon ALB logs that contain this line: *https://agent\. g. A single character of: a, I'm having some challenges with coercing my log lines in a certain format. Lambda Promtail client. Every Grafana Loki release includes binaries for Promtail which can be found on the Releases page as part of the release assets. This can Hi, is there any best practice for using static_configs for multiple files. The metrics stage is an action stage that allows for defining and updating metrics based on data from the extracted map. The regex . >> promtail regex not match log with ANSI color. csv file. cri: Extract data by parsing the log line using the standard CRI format. yml This pipeline takes the current value of level and app from the extracted map and a new key output_msg will be added to extracted map with evaluated template. 2 What are you trying to achieve? Application is hosted on windows server. for example The 'drop' Promtail pipeline stage. 3. io/name should be written as app_kubernetes_io_name. 4. log I have relabel setup as below, I get “**” as label hostname and “*” as label logname. A second regex may validate this case. b4835990 100644 --- a/charts/promtail/values. I want to tail multiple logfiles from various locations. yaml Copy - timestamp: source: time format: RFC3339Nano. If you need to use multiple glob, you can simply add another job in your scrape_configs. Grafana/loki may be holding onto previous data which could be why varlogs appeared as a job name there, since it's not defined in your Promtail config. >> change to failed. I want to filter log lines with labeling using regex. geoip_autonomous_system_number: 396982; geoip_autonomous_system_organization: GOOGLE-CLOUD-PLATFORM; For more information and real life example, see Protect PII Somewhere else someone notify me of a problem with my regex, compressed part "::" can only appear once. Each log line from Docker is written as JSON with the following keys: log: The content of log line; stream: Either stdout or stderr; time: The timestamp string of the log line; Examples. If you pass Promtail the flag -print-config-stderr or -log-config-reverse-order, (or -print-config-stderr=true) Promtail will dump the entire config Troubleshooting Promtail. * You can test it by yourself, it only matches any other line but ERROR. Whatever the order between regex and multiline, i never succeed to extract the subject or at least to send it to loki from promtail I checked regex on regexp101 with go regexp and it’s working fine. Deployment. I am using log4js to log data to a file in my app. It’s easy enough to parse with pattern or regexp filter if the order of each arguments in the URL is static, but it’s not or should not be expected to stay static, and therefore it has to be skip: do not change the timestamp and keep the time when the log entry has been scraped by Promtail; Examples. Introduction. : readline_rate_drop: true: When true, exceeding the rate limit causes Promtail to discard log lines, rather than sending them to Loki. [^-]+-[^-]+ Now, I need to enhance this regex to remove all substrings that have any numeric digit in it (e. http_listen_port: 9080. Logs . About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; An explanation of your regex will be automatically generated as you type. 10:00:47 ℹ jib → Configuring provider 10:00:47 jib → Provider configured 10:00:47 jib → Provider ready If all your logs are in different format (which sounds like they are), and regex doesn’t get timestamp from all of them, then when you try to assign timestamp to an empty value it may be problematic. Group Constructs. +"} {name !~ "mysql. In today’s dynamic world of web applications I have a some of docker containers with names: project1-api project1-crons project2-api project2-crons etc And I need to have a label like “project1”, “project2” to filter in in Grafana Loki So I think to parse log in promtail with some regexp to add label “project1”, “project2” etc, but cann’t to have a correct config of Promtail Maybe there are other way to solve my Configure Promtail. config. Before sending the log files it processes and labels the log lines. You can also I can't seem to sort this out and get the behavior that I would like. This is the relevant portion of my promtail conf: I have a promtail and docker compose config and setup that works fine but when i try to follow same for docker swarm cluster, logs are not showing up for some reason I have searched online for a doc docker-compose; docker-swarm; grafana-loki; promtail; uberrebu. However, when parsing it through Promtail, it appears to be parsed but not being used as the displayed timestamp. Like in the example above, the __syslog_message_hostname field from the journal was Read Nginx Logs with Promtail Read Nginx Logs with Promtail Table of contents Video Lecture A Dashboard Variables Example Repeating Timeseries using Dashboard Variables MikroTik 260GS SNMP Dashboard Alerting Rule for High CPU Alerting Rules for Node Exporter and Prometheus Down Create Email Alert Contact Point Change Email Alert Template Create Promtail pipeline stages. The pack stage is a transform stage which lets you embed extracted values and labels into the log line by packing the log line and labels inside a JSON object. Promtail is an agent which ships the contents of local logs to a private Loki instance or Grafana Cloud. Commented lines represent my 4 Yes we can use regex to get http code and request time. When false, exceeding the rate limit causes Promtail to temporarily hold off on sending the log lines and retry later. yaml index 56d5cccd. file: string : See values. powered by Grafana Querying multiple labels simultaneously. +"} {name !~ `mysql-\d+`} Note: Unlike the line filter regex expressions, the =~ and !~ regex operators are fully anchored. cri: Extract data by parsing the log line Because of how YAML treats backslashes in double-quoted strings, note that all backslashes in a regex expression must be escaped when using double quotes. replace: # The RE2 regular expression. # It defaults to 3s. This means that the regex expression must match against the entire string, including newlines. See the instructions here. My block is the following : - job_name: crontab pipeline_stages: - regex: expression: "^Subject: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Install Promtail Binary and Start as a Service LogQL LogQL Table of contents Video Lecture Description Log Stream Selectors Operators Examples Filter Expressions Operators Examples You signed in with another tab or window. Built-in aggregation operators. powered by Grafana Tempo. Valheim Genshin Impact Minecraft Pokimane Halo Infinite Call of Duty: Warzone Path of Exile Hollow Knight: Silksong Escape from Tarkov Watch Dogs: The regex stage parses the log line and ip is extracted. yaml config server: http_listen_port: 9080 grpc_listen_port: 0 Skip to content. Hello, i would like to know how to configure multiline configs via helm or just promtail. 0 answers. It extracts all log data and forwards the content to Loki. *' The middle part is usually a team name like voldort, dev, cryon, etc. Make sure you are in same dir as promtail-linux-amd64 when running that, and promtail is set to scrape /sample. Tailer - A reader that reads log lines as they are appended, for Configuring Promtail Promtail is configured in a YAML file (usually referred to as config. The promtail user will not yet have the permissions to access it. grafana-loki; promtail; ShenDY. Signature: regexReplaceAll(regex string, src string, replacement string) (source) Example: template Copy `{{ regexReplaceAll "(a*)bc" . Must be configured as string. # No new logs will arrive and the exception # block is sent *after* the maximum wait time expires. regex: Extract data using a regular expression. All Tokens. My problem: I don't see any labels in my log entries. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; The regex_parser operator parses the string-type field selected by parse_from with the given regular expression pattern. Assuming value of level is warn. To Reproduce Steps to reproduce the behavior: Started Loki (SHA or version) Skip to content. yml Some examples please . log is processed and you get ** in grabbers from it. py:1364} INFO - Starting attempt 1 of 2. log and events. I have some log examples as shown: event,1107,0deba616-9f81-488f-81c1-af4a01040347,,,,,83cd55a9-95bf-4eb5-a221-af4900c Promtail configuration. *ERROR). Path: Copied! Products Open Source Solutions Learn Docs Company; Downloads Contact us Sign in; Create free account Contact us. Flags/Modifiers . ){3}[0 This example of config promtail based on original docker config and show how work with 2 and more sources: Filename for example: my-docker-config. Can use # pre-defined formats by name: [ANSIC UnixDate RubyDate RFC822 # RFC822Z RFC850 RFC1123 RFC1123Z RFC3339 RFC3339Nano Unix # UnixMs UnixUs UnixNs]. If you want the regex dot character I use the PLG stack (promtail, loki, grafana) to collect system logs and I need to override the integration date added by loki by the one extracted from the log message, I can't get it to work, here is my example: Promtail collects log data from various sources and sends it to Loki. kubernetes. The timestamp format you are using in your config looks bit weird, From the docs it should be one of the following. log entry: {timestamp=2019-10- Hi @emilechaiban. Write better code with AI Security. 4,279; asked Nov 21 at 11:24. Promtail’s The 'json' Promtail pipeline stage. Read the details here. Character Classes. 0 coins. Stack Overflow. I am using Promtail to harvest the logs and push the data to Loki. # Determines how to parse the time string. For example, all of these are valid: expression: \w* expression: '\w*' expression: "\\w*" But these are not: expression: \\w* (only escape backslashes when using double quotes) Configure Promtail. Automate any workflow Codespaces. Products. I want get from log-file: timestamp, level of log and message. yaml) which contains information on the Promtail server, where positions are stored, and how to scrape logs from files. Skip to content. I can view the logs in Loki. yaml +++ b/charts/promtail/values Unlike most stages, the cri stage provides no configuration options and only supports the specific CRI log format. Promtail is a logs collector agent that collects, (re)labels and ships logs to Loki. We get some logs from Promtail and we can visualize them in grafana but our development namespace is nowhere to be found in loki. Traces. The 'json' Promtail pipeline stage. Do you mean we need to write a regex for each one to match and then we negate it for the drop? That would typically be very long regex. usermod -a -G systemd-journal promtail. This stage looks for a time field in the extracted map Promtail. That my promtail-config From that, i would like to create labels for method, URL, host i have tried the JSON expression like below in promtail. I am using regular expressions to process my logs. I’d like to have logs labelled with hostname and app. Rename a Prometheus label by using a regex against a metric name Hot Network Questions How to make i3 aware of altered PATH configuration set in . See Unwrap examples for query examples that use the unwrap expression. For example, bob-marley-bla-bla is transformed into bob-marley. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The 'metrics' Promtail pipeline stage. Promtail appears to be using only the parameters for the last static_config with the job_name "system". I don't want the local mount location (/mnt/logs/<hostname>) to show up as part of the path. All gists Back to GitHub Sign in Sign up Sign in Sign up You signed in with another tab or window. enabled: true and this to false to manage your own Promtail config See default config in values. The Promtail configuration you get from the Helm chart is already configured to get all the logs from your Kubernetes cluster and append labels on it as Prometheus does for metrics. It works – and it’s fast. Promtail. Provides LogQL query examples with explanations on what those queries accomplish. A new key output_msg will be added to extracted map with value warn See the golang Regexp. powered by Grafana In the meantime, I have setup another Promtail instance on my other server, which is running nginx reverse proxy and jellyfin media player. Now I need to extract the duration of the request from the "log" label, but I am not sure how to construction the logql query so I can do something like this How much of the example you have shown is constant, and how much is variable from one ocurrence to the next? For example, does every instance start with “sgrvrthf”? I think this is an interesting problem. The promtail agent is responsible for collecting log messages and passing them to a Loki agent. ]+)\. Note that created metrics are not pushed to Loki and are instead exposed via Promtail’s /metrics endpoint. I am new to Promtail. For example, if the extracted map contained app with a value of loki, this pipeline would change its value to LOKI. Appender - A writer that keeps appending to a log file. My objective is to transform the free-form ones to the same logfmt as the others, independent of any other labeling. Describe the solution you'd like If I have multiple labels, for example: item00A item01A Skip to content. Jellyfin's server Promtail setup looks like following: I’ve got it added to the promtail config file, but it appears that nothing has changed in grafana after editing the promtail config and restarting the service. # This is useful if the observed application dies with, for example, an exception. Each named capture group will be added to extracted. Like PromQL, LogQL supports a subset of built-in aggregation operators that can be used to aggregate the element of a single vector, resulting in a new vector of fewer elements but with aggregated values: sum: Calculate sum over labels Unlike most stages, the docker stage provides no configuration options and only supports the specific Docker log format. I don’t have much multiline logs in our Loki cluster, but from my brief experience I think regex filter would work better for you (remember not to use the end-of-line character $ when matching multiple lines). Dry running. I have tried to parse the JSON i was able to extract the req but i don't know how to parse the nested one in promtail Hi I have deployed the promtail helm chart and I am ingesting logs, but many of my apps are react apps running nginx but my logs are not being parsed properly. Below is the snippet of my Promtail configuration: I want to ship logs from promtail to loki and visualize in grafana. It is built specifically for Loki — an instance of Promtail will run on each Kubernetes node. Metrics. Typical pipelines will start with a regex or json stage to extract data from the log line. Any Stage is capable of modifying the labels, extracted data, time, and/or entry, though generally a Stage should only modify one of those things to reduce complexity. "warn"))? From what I can tell, the reason there is a different label for each Hello , I am writing Promtail syslog receiver of (Pfsense)Openvpn logs and normalize them into lables the log line example as follows below including my Promtail config, i managed to get most of my desired data into labels, but i would like to set label as vpn_auth_status , if its equal to as follows vpn_auth_status = could not authenticate. In a typical setup, we would deploy one promtail agent per host. Promtail is the metadata appender and log sending agent. I little bit confused, I trying for my POC via Docker, collect and read *. I tried timestamp stage with location field but it looks like that this field does nothing. Furthermore, every attempt has finished with my Promtail docker failing to start up :o(The following is the contents of my YAML file. Navigation Menu Toggle navigation. To Reproduce create ~/promtail. Rather, it is using the timestamp where Promtail pushed said log to Loki. Once Promtail has a set of targets (i. yaml file to filter the log lines that contains the word INFO. Here is an example of my logs: I am mounting this NFS volume on my promtail nodes, and using static_config to scrape the file. net. Detailed match information will be displayed here automatically. 4,249; answered Nov 25 at 11:31. sudo service promtail stop sudo service promtail status . The 'labelallow' Promtail pipeline stage. What’s the best way to handle path with wildcards? scrape_configs: - How to add the values of multiple labels and assign them to another label in promtail config? scrape_configs: - job_name: journal journal: max_age: 12h relabel_configs: - Skip to main content. Automate any workflow Packages. It may also be common to see the use of match at The 'multiline' Promtail pipeline stage. In YAML, as soon as you enter a flow-style collection, all special flow-indicators cannot be used in plain scalars anymore. 30 views. Quick Reference. You signed out in another tab or window. Monitoring Nginx Logs with Grafana, Loki & Promtail on Docker 1. 0 votes. Zabbix is my go-to monitoring tool, but it’s not perfect. {app="nginx-ingress-microk8s-cont Provides LogQL query examples with explanations on what those queries accomplish. g 67srer) except when the substring is "s3". But I have to admit that my current Hello, i would like to know how to configure multiline configs via helm or just promtail. 8. max_wait_time: <duration> # Maximum number of lines a block can have. Logs. For the given pipeline: Enable Promtail config from Helm chart Set configmap. (?P<ip>((?:[0-9]{1,3}\. Basic Regex Query for Log Filtering. So "::1::2" would match with my regex but it's not a valid IPV6. yaml b/charts/promtail/values. 13 and will be removed in 0. The full recommendation was to use a stateful parser to validate. Automate any The 'match' Promtail pipeline stage. 6, OS Red Hat Ent Linux Promtail Version v2. Describe the bug I'm using Loki with Promtail and wanted to add pipeline_stages to redact some sensitive information (PII logs). yaml include grafana, loki and promtail. powered by Grafana Mimir and Prometheus. 1k views. Here is the query I use in Loki + referer field to look only the domian request. Promtail allows you to write powerful and complex pipelines that can transform your logs prior to export to your Loki instances. Find and fix vulnerabilities Codespaces. Meta Sequences. I’m curious if its not picking up the actual message part of the log and is maybe trying to apply the regex expression to the WHOLE log entry (quite possibly my fault since I was thinking only the actual message portion The 'labels' Promtail pipeline stage. log files. Search reference. For example if you are running Promtail in Kubernetes then each container in a single pod will usually yield a single log stream with a set of labels based on that particular pod Kubernetes labels. metrics. Configure Promtail. powered by Grafana I have a probleam to parse a json log with promtail, please, can somebody help me please. Reload to refresh your session. lambda-promtail can easily The 'eventlogmessage' Promtail pipeline stage. file flag at the command line. If you pass Promtail the flag -print-config-stderr or -log-config-reverse-order, (or -print-config-stderr=true) Promtail will dump the entire config Describe the bug I'm matching loglines from a standard Promtail config. context deadline exceeded: pushing logs to Loki For example, I'm using FreeBSD jails to nullfs mount my logs from other jails into a promtail jail. 9. Products . Substitution. Here’s how you can do it: Let’s say you want to filter all The 'logfmt' Promtail pipeline stage. But the regex is always not working. That means the actual payload (log line) pushed to my qryn The Result: When we want to relabel one of the source the prometheus internal labels, __address__ which will be the given target including the port, then we apply regex: (. url: I’m using promtail 2. Loki stores the log data efficiently, allowing for fast and efficient querying using LogQL. I would like to interpret the time as local timezone. Instant dev environments GitHub Copilot. The logfmt parsing stage reads logfmt log lines and extracts the data into labels. If the block has more lines, a new block is started. # Each capture group and named capture group will be replaced with the value given in Your goal is to match message with multiline regex, then attach to this message few more messages for next lines and apply regex stage to combined message in order to When Promtail receives syslog messages, it brings in all header fields, parsed from the received message, prefixed with __syslog_ as internal labels. This is done via lambda-promtail which processes cloudwatch events and propagates them to Loki (or a Promtail instance) via the push-api scrape config. I am using a pattern to add tags to different log fields of my nginx ingress. logFormat: string How to use Promtail pipelines to transform single log lines, labels, and timestamps. I have managed to convert the given timestamp into a RFC3339 format. ([^. I'm running one promtail instance on several log files, of which some are logfmt and others are free-form. In Loki, I want to filter the data based on the parsed values. The geoip stage performs a lookup on the ip and populates the following labels:. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Tinkering with Loki, Promtail, Grafana, Prometheus, Nginx and Dnsmasq - dnsmasq. If a discovered target has decompression configured, Promtail will lazily decompress the compressed file and push the parsed data to Loki. Implementing Regex in Prometheus Metric Queries Regex can be a powerful tool in Prometheus queries, especially when you want to filter metrics based on their names or labels. Sign in Product Actions. Add the user promtail into the systemd-journal group. yaml. yaml: Config file contents for Promtail. Configure Firewall. But i am not able to parse them in promtail, meaning the labels are not getting generated server: http_listen_port: 9080 Skip to main content. *"' action: drop - output: source: msg But the problem is when I use this approach to filter the logs it cause to remove the stack I have a promtail and docker compose config and setup that works fine but when i try to follow same for docker swarm cluster, logs are not showing up for some reason I have searched online for a doc docker-compose; docker-swarm; grafana-loki; promtail; uberrebu. Match Information. Regex Syntax This operator makes use of Go regular expression . powered by Grafana Loki. I’m using the latest promtail and loki and trying to use your static_configs example but I’m not getting the labels pushed to Loki all I see below Discovered labels __address __path job I do not see labels of facility and hostname am I doing something wrong ? here is my promtail server: http_listen_port: 9080 grpc_listen_port: 0 positions: filename: Promtail pipeline stage replace, can`t replace guid. However, you can tune the configuration for your needs. Special flow indicators are Choosing where Promtail should find log files to tail, in our example we want to include all log files that exist in /var/log using the glob /var/log/**. Users can create custom dashboards, panels, and queries to visualize and analyze log data. You can try to assign timestamp if and only if the regex parsed successfully by using a match block (not tested): I am running Grafana Enterprise, Loki & Promtail in Ubuntu 18 Virtual Machine. Sign in Product GitHub Copilot. I tried all combinations, but I am not able to see the labels in Grafana. Not covered: Deployment of the Promtail container. relabel_configs allows for fine-grained control of what to ingest, what to drop, and the final metadata to attach to the log line. Then any combination of other stages follow to use the data in the extracted map. Please use the `scan` field instead. Because of this I was able to get this working using positive lookahead with the following regex, but it throws an error in Promtail. Documentation Ask Grot AI Plugins Get Grafana. Everything else should be discarded. I try many configurantions, but don't parse the timestamp or other labels. Describe the bug Given a nginx log with date & time with missing timezone information. Premium Powerups Explore Gaming. In order to get this system attached to Loki my idea is to have a configuration that drops anything per default except lines that match a Regex ruleset. Promtail is configured in a YAML file (usually referred to as config. yml looks like following: Unlike most stages, the cri stage provides no configuration options and only supports the specific CRI log format. filename should be used as source to Hello 👋 Thanks for any help and feedback in advance 🙂 . for visualization. Install the binary. so I came up with this pattern to match the other log and drop it ^(?!. If you pass Promtail the flag -print-config-stderr or -log-config-reverse-order, (or -print-config-stderr=true) Promtail will dump the entire config I think you may need different job_names here, one for each defined static_config. Profiles. These are my log lines: [DEBUG]: Starting the application [PROCESS]: Trying a division [WARNING]: dividing by zero(0) might Regex log stream examples: {name =~ "mysql. Common Tokens. powered by Too many labels leads to issues concerning series cardinality. Deploy and configure Grafana's Promtail on a node. It is templated so it can be assembled from reusable snippets in order to avoid redundancy. You can do dry run as below to verify the promtail config is parsing the labels & timestamp properly. Since I may have 10 to 20 hostnames and a dozen of apps, I set _ _ path _ _ to /applogs/**/*. *) to catch everything from the source label, and since there is only one group we use the replacement as ${1}-randomtext and use that value to apply it as the value of the given target_label which The docs have some examples regex | Grafana Loki documentation The second issue you might have is your timestamp doesn’t have time zone info in it, you should explicitly set the time zone in the timestamp stage to make sure Promtail is an agent which reads log files and sends streams of log data to the centralised Loki instances along with a set of labels. Grafana is configured to connect to Loki as a data source. # The default is 128 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am writing Promtail syslog receiver of (Pfsense)Openvpn logs and normalize them into lables the log line example as follows below including my Promtail config, i managed to get most of my desired data into labels, but i would like to set label as vpn_auth_status , if its equal to as follows vpn_auth_status = could not authenticate. General Tokens. We will look at the differences between using Dockerfiles and Helm charts for deploying Promtail and the recommended approach for configuring pipeline stages. All I want to do is drop log lines that originated from Uptimerobot software we use to determine if our All I want to do is drop log lines that originated from Uptimerobot software we use to determine if our I have already 3 Promtails with labels working properly, I tried the same example on this machine which belongs to Skip to main content. expand-env=true flag the configuration will run through envsubst which will replace double backslashes with single backslashes. NET, Rust. The Promtail configuration example below shows how to I have a one regex expression that it create labels and one label i want to convert it to integer instead of string ? Anyone knows how i can do that Advertisement Coins. Loki uses Promtail to aggregate logs. For example, the label app. Is my use case feasible with Promtail? If not, which log If undefined, default name "promtail_custom_" will be prefixed. 1. If you often parse a label from a log line at query time, the label has a high cardinality, and extracting that label is expensive in terms of performance; consider extracting the label on the client side attaching it as structured metadata to log lines . eventlogmessage: # Name from extracted data to parse, defaulting to the name # used by the windows_events scraper [source: <string> | default = message] # If previously extracted data exists for a key that occurs # in the Message, when true, the previous value will be # overwriten by the value in the Message. I will discuss these points more later in the post. It is usually deployed to every machine that has applications needed to be monitored. Printing Promtail Config At Runtime. It enriches the logs with labels and other metadata. here is an example from Grafana I have found this conf The 'sampling' Promtail pipeline stage. I am unable to do LogQL queries based on hostname or any type of query based on facility. Parsing stages: docker: Extract data by parsing the log line using the standard Docker format. Objective/Intro I’m trying to achieve multiline logging on a container (docker) based installation (kubernetes cluster) using loki and promtail through helm charts. Here are two examples: I am using this code part in my promtail-config. I want to send only the ERROR log. Does including the case-insensitive flag (?i) in the regex in the config not give you a (static) label you can reference in a query (e. Using Grafana query Loki to build dashboards. Grafana Loki includes Terraform and CloudFormation for shipping Cloudwatch, Cloudtrail, VPC Flow Logs and loadbalancer logs to Loki via a lambda function. I run this component in docker and mount the user data volume from my openhab docker container into the promtail container (in the /logs folder in promtail container). Write better This example uses Promtail for reading the systemd-journal. You can give Hi! I’m trying to use Pipelines to define a timestamp from logs that are presented in a . Hi there, I’m using promtail 2. Im trying to extract subject as label from mailbox file. I currently have a functioning Go RE2 regex pattern that trims a given string by removing everything after the second dash. Promtail can be configured to print log stream entries instead of sending them to Loki. I tried the following promtail config, label names are slightly different but with this config the loki data source does Hello Community, I have a legacy system which generates enormous amounts of logs. The 'labeldrop' Promtail pipeline stage. Host and manage packages Security. . The 'match' Promtail pipeline stage. Is it possile to parse first part of the log as json, and for stack-trace make new label ("stackTrace" for example) and put there all the lines after first part? Unfortunately, logs can contain a different number of fields in json format, and If you use Loki as your log aggregation system, then you're likely familiar with Promtail, the agent that ships your local logs to a private Grafana instance or Grafana Cloud. It uses the exact In this article, we explore the use of Kubernetes SD Configs in the context of Promtail pipeline stages. Instant dev environments Issues. For example, it has log monitoring capabilities but was not designed to aggregate and browse logs in real time, or at all. so I came up with this pattern to match the other log and drop it Q: Under what scenario should I use regex in the promtail pipeline if the pattern parser does the same but better, just missing the conceptual part (s)? Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/. Promtail scrape config dynamic file path. You switched accounts on another tab or You are using __path__ as source, so /var/logs/scrapyd/logs/grabbers/**/*. , things to read from, like files) and all labels are set Use filter expressions (|= "text", |~ "regex", ) and brute force those logs. bashrc Param Default Description; readline_rate_enabled: true: When true, enforces rate limiting. Remote access Promtail pipeline stages. pipeline_stages: - match: selector: '{env="myenv"}' stages: - json: expressions: msg: log - match: selector: '{status="info"} !~ ". Find and fix vulnerabilities Actions. Anchors. . Because of this when using expand-env=true you need to use double If you run Promtail with the --config. I browsed a lot of examples on line, and none of them seem to work when I include it in my Promtail YAML file. I want to display some of this data in my Grafana dashboard and for that I am using Promtail to read logs from the file, pre-process it and send it to Loki. Then the extracted ip value is given as source to geoip stage. Description; Usage; Reference; Changelog; Limitations; Development; Module Release; Description. Prometheus should be configured to scrape Promtail to be able to retrieve the metrics configured by this Hello! I am trying to parse some log data created by a command line tool for debugging purposes. It is also painful to test regex by continuously stopping and restarting the Promtail daemon (I am not a regex pro in all the flavors of regex that are used today, Loki and Promtail understand Go RE2 regex strings). 000+0300] {taskinstance. Loki and promtail kind of work. some_label "${1}a" }}` regexReplaceAllLiteral function returns a copy of the input string and replaces matches of the Regexp with the replacement string replacement. If you run Promtail with the --config. log files, for example line from log: [2024-05-29T09:06:12. Loki labels demo. Promtail needs access to the openhab. 7 and I have a specific use case with promtail. powered by Grafana Unsupported characters in the label should be converted to an underscore. Therefore my question would be, if anybody is aware of a promtail configuration, which sends the container logs aggregated by the docker swarm service they are belonging to ? The current promtail config. 0), and set the configuration to I want Promtail to discard logs that contain the word "connection". You can stop the Promtail service at any time by typing. For example, if you wanted to remove the labels container and pod but still wanted to keep their values you could use this stage to create the following output: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company we recently decided to install loki and promtail via the loki-stack helm chart. I am not sure the format of your application log, however I can give you an example below for a regex to capture the timestamp, log level, and ID from these log lines as these are mostly common in every set of an application log. vpn_auth_status = Promtail is distributed as a binary, in a Docker container, or there is a Helm chart to install it in a Kubernetes cluster. It typically contains comma-separated key-value pairs, though you can also, like in this example, give single values instead, which will make them a key with null value. Install using APT or RPM package manager. The file is written in YAML format, defined by the schema {namespace="ingress-nginx"} |= "gymauto-frontend" |~ "GET (/main)" | json I get these entries. This series of examples will With {, you are beginning a YAML flow mapping. I configured my helm chart to the latest Promtail version (v2. Mounting shared folder could similarly be done with NFS or Docker. e. CRI specifies log lines as space-delimited values with the following components: time: The timestamp string of the log; stream: Either stdout or stderr; flags: CRI flags including F or P; log: The contents of the log line; No whitespace is permitted between the components. What about making the default to “drop” and then when explicitly defining action: we keep those logs. Then you need a configuration file for promtail in order to create a job for each file and tell promtail how to parse the log file lines. This can be your application or some system daemons like Syslog, Docker log driver or Kubelet, etc. [source: <string>] # Label values on metrics are dynamic which can cause exported metrics # to go stale (for example when a stream stops receiving logs). LGTM+ Stack. HI all, I have logs aggregated at /applogs/hostname/app. yml Some examples please. pack. I had acheived this using grok patterns in logstash, but i’ve no idea how this can be done with promtail or loki. replaceAll documentation for more examples. example logs are: 09:59:26 Project configuration field `modules` is deprecated in 0. This section is a collection of all stages Promtail supports in a Pipeline. Let’s Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Monitoring Nginx Logs with Grafana, Loki & Promtail on Docker. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Note: For log filtering, you need to configure Loki and Promtail. 1 ignores/doesn't parse a custom format value in the timestamp stage. Automate any workflow I have read the docs for promtail and doing pipelines and I cannot make heads nor tails of it. powered by Grafana What Grafana version and what operating system are you using? Grafana V9. My solution is somewhat working, except that it does not handle multiline messages which are split by hitting max_lines. Grafana. Quantifiers. this is my promtail configuration scrape_configs: - job_name: system static_configs: - targets: - localhost Describe the bug Promtail 2. This document describes known failure modes of Promtail on edge cases and the adopted trade-offs. You switched accounts on another tab or window. For example, perhaps you want to use a regex to extract your For example, PM2 logs might have a custom format that matches the output of your application. svdvkvcjhxfopwrwnqkbbeotnpeituhviwtyrfqenac