promtail examples

# The Cloudflare API token to use. Clicking on it reveals all extracted labels. # The list of Kafka topics to consume (Required). Offer expires in hours. At the moment I'm manually running the executable with a (bastardised) config file but and having problems. By using our website you agree by our Terms and Conditions and Privacy Policy. Cannot retrieve contributors at this time. new targets. (configured via pull_range) repeatedly. # The RE2 regular expression. Can use, # pre-defined formats by name: [ANSIC UnixDate RubyDate RFC822, # RFC822Z RFC850 RFC1123 RFC1123Z RFC3339 RFC3339Nano Unix. # all streams defined by the files from __path__. When false, the log message is the text content of the MESSAGE, # The oldest relative time from process start that will be read, # Label map to add to every log coming out of the journal, # Path to a directory to read entries from. Catalog API would be too slow or resource intensive. your friends and colleagues. Prometheus should be configured to scrape Promtail to be Be quick and share Many errors restarting Promtail can be attributed to incorrect indentation. # SASL configuration for authentication. Once the service starts you can investigate its logs for good measure. # Sets the maximum limit to the length of syslog messages, # Label map to add to every log line sent to the push API. If empty, the value will be, # A map where the key is the name of the metric and the value is a specific. How to match a specific column position till the end of line? It primarily: Discovers targets Attaches labels to log streams Pushes them to the Loki instance. The JSON configuration part: https://grafana.com/docs/loki/latest/clients/promtail/stages/json/. Now, since this example uses Promtail to read system log files, the promtail user won't yet have permissions to read them. # Target managers check flag for Promtail readiness, if set to false the check is ignored, | default = "/var/log/positions.yaml"], # Whether to ignore & later overwrite positions files that are corrupted. "sum by (status) (count_over_time({job=\"nginx\"} | pattern `<_> - - <_> \" <_> <_>\" <_> <_> \"<_>\" <_>`[1m])) ", "sum(count_over_time({job=\"nginx\",filename=\"/var/log/nginx/access.log\"} | pattern ` - -`[$__range])) by (remote_addr)", Create MySQL Data Source, Collector and Dashboard, Install Loki Binary and Start as a Service, Install Promtail Binary and Start as a Service, Annotation Queries Linking the Log and Graph Panels, Install Prometheus Service and Data Source, Setup Grafana Metrics Prometheus Dashboard, Install Telegraf and configure for InfluxDB, Create A Dashboard For Linux System Metrics, Install SNMP Agent and Configure Telegraf SNMP Input, Add Multiple SNMP Agents to Telegraf Config, Import an SNMP Dashboard for InfluxDB and Telegraf, Setup an Advanced Elasticsearch Dashboard, https://www.udemy.com/course/zabbix-monitoring/?couponCode=607976806882D016D221, https://www.udemy.com/course/grafana-tutorial/?couponCode=D04B41D2EF297CC83032, https://www.udemy.com/course/prometheus/?couponCode=EB3123B9535131F1237F, https://www.udemy.com/course/threejs-tutorials/?couponCode=416F66CD4614B1E0FD02. # Must be either "inc" or "add" (case insensitive). Created metrics are not pushed to Loki and are instead exposed via Promtails Consul Agent SD configurations allow retrieving scrape targets from Consuls If localhost is not required to connect to your server, type. # Certificate and key files sent by the server (required). Bellow youll find a sample query that will match any request that didnt return the OK response. has no specified ports, a port-free target per container is created for manually # Label map to add to every log line read from the windows event log, # When false Promtail will assign the current timestamp to the log when it was processed. or journald logging driver. All custom metrics are prefixed with promtail_custom_. Idioms and examples on different relabel_configs: https://www.slideshare.net/roidelapluie/taking-advantage-of-prometheus-relabeling-109483749. E.g., log files in Linux systems can usually be read by users in the adm group. His main area of focus is Business Process Automation, Software Technical Architecture and DevOps technologies. Course Discount We use standardized logging in a Linux environment to simply use echo in a bash script. then each container in a single pod will usually yield a single log stream with a set of labels Services must contain all tags in the list. # Describes how to receive logs via the Loki push API, (e.g. The boilerplate configuration file serves as a nice starting point, but needs some refinement. In the /usr/local/bin directory, create a YAML configuration for Promtail: Make a service for Promtail. If this stage isnt present, In those cases, you can use the relabel # The consumer group rebalancing strategy to use. # Name of eventlog, used only if xpath_query is empty, # xpath_query can be in defined short form like "Event/System[EventID=999]". Many of the scrape_configs read labels from __meta_kubernetes_* meta-labels, assign them to intermediate labels Below are the primary functions of Promtail, Why are Docker Compose Healthcheck important. # Name from extracted data to parse. Below are the primary functions of Promtail:if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'chubbydeveloper_com-medrectangle-3','ezslot_4',134,'0','0'])};__ez_fad_position('div-gpt-ad-chubbydeveloper_com-medrectangle-3-0'); Promtail currently can tail logs from two sources. services registered with the local agent running on the same host when discovering required for the replace, keep, drop, labelmap,labeldrop and Promtail needs to wait for the next message to catch multi-line messages, Each target has a meta label __meta_filepath during the You will be asked to generate an API key. before it gets scraped. See below for the configuration options for Kubernetes discovery: Where must be endpoints, service, pod, node, or It reads a set of files containing a list of zero or more Each job configured with a loki_push_api will expose this API and will require a separate port. E.g., You can extract many values from the above sample if required. Here, I provide a specific example built for an Ubuntu server, with configuration and deployment details. # Describes how to relabel targets to determine if they should, # Describes how to discover Kubernetes services running on the, # Describes how to use the Consul Catalog API to discover services registered with the, # Describes how to use the Consul Agent API to discover services registered with the consul agent, # Describes how to use the Docker daemon API to discover containers running on, "^(?s)(?P\\S+?) directly which has basic support for filtering nodes (currently by node Aside from mutating the log entry, pipeline stages can also generate metrics which could be useful in situation where you can't instrument an application. # Optional bearer token authentication information. If the endpoint is This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Asking someone to prom is almost as old as prom itself, but as the act of asking grows more and more elaborate the phrase "asking someone to prom" is no longer sufficient. Adding more workers, decreasing the pull range, or decreasing the quantity of fields fetched can mitigate this performance issue. # Base path to server all API routes from (e.g., /v1/). # Optional filters to limit the discovery process to a subset of available. Please note that the discovery will not pick up finished containers. We recommend the Docker logging driver for local Docker installs or Docker Compose. Changes to all defined files are detected via disk watches log entry was read. However, this adds further complexity to the pipeline. from a particular log source, but another scrape_config might. with and without octet counting. In a container or docker environment, it works the same way. if many clients are connected. Download Promtail binary zip from the release page curl -s https://api.github.com/repos/grafana/loki/releases/latest | grep browser_download_url | cut -d '"' -f 4 | grep promtail-linux-amd64.zip | wget -i - This article also summarizes the content presented on the Is it Observable episode "how to collect logs in k8s using Loki and Promtail", briefly explaining: The notion of standardized logging and centralized logging. The pipeline is executed after the discovery process finishes. # Address of the Docker daemon. If all promtail instances have different consumer groups, then each record will be broadcast to all promtail instances. # Name from extracted data to use for the timestamp. Zabbix is my go-to monitoring tool, but its not perfect. We need to add a new job_name to our existing Promtail scrape_configs in the config_promtail.yml file. syslog-ng and Here are the different set of fields type available and the fields they include : default includes "ClientIP", "ClientRequestHost", "ClientRequestMethod", "ClientRequestURI", "EdgeEndTimestamp", "EdgeResponseBytes", "EdgeRequestHost", "EdgeResponseStatus", "EdgeStartTimestamp", "RayID", minimal includes all default fields and adds "ZoneID", "ClientSSLProtocol", "ClientRequestProtocol", "ClientRequestPath", "ClientRequestUserAgent", "ClientRequestReferer", "EdgeColoCode", "ClientCountry", "CacheCacheStatus", "CacheResponseStatus", "EdgeResponseContentType, extended includes all minimalfields and adds "ClientSSLCipher", "ClientASN", "ClientIPClass", "CacheResponseBytes", "EdgePathingOp", "EdgePathingSrc", "EdgePathingStatus", "ParentRayID", "WorkerCPUTime", "WorkerStatus", "WorkerSubrequest", "WorkerSubrequestCount", "OriginIP", "OriginResponseStatus", "OriginSSLProtocol", "OriginResponseHTTPExpires", "OriginResponseHTTPLastModified", all includes all extended fields and adds "ClientRequestBytes", "ClientSrcPort", "ClientXRequestedWith", "CacheTieredFill", "EdgeResponseCompressionRatio", "EdgeServerIP", "FirewallMatchesSources", "FirewallMatchesActions", "FirewallMatchesRuleIDs", "OriginResponseBytes", "OriginResponseTime", "ClientDeviceType", "WAFFlags", "WAFMatchedVar", "EdgeColoID". Events are scraped periodically every 3 seconds by default but can be changed using poll_interval. Running Promtail directly in the command line isnt the best solution. Topics are refreshed every 30 seconds, so if a new topic matches, it will be automatically added without requiring a Promtail restart. '{{ if eq .Value "WARN" }}{{ Replace .Value "WARN" "OK" -1 }}{{ else }}{{ .Value }}{{ end }}', # Names the pipeline. The relabeling phase is the preferred and more powerful For The latest release can always be found on the projects Github page. We're dealing today with an inordinate amount of log formats and storage locations. Each variable reference is replaced at startup by the value of the environment variable. Are you sure you want to create this branch? # Log only messages with the given severity or above. E.g., you might see the error, "found a tab character that violates indentation". For example, when creating a panel you can convert log entries into a table using the Labels to Fields transformation. # The Kubernetes role of entities that should be discovered. These tools and software are both open-source and proprietary and can be integrated into cloud providers platforms. References to undefined variables are replaced by empty strings unless you specify a default value or custom error text. Agent API. To learn more, see our tips on writing great answers. Are there tables of wastage rates for different fruit and veg? Note that the IP address and port number used to scrape the targets is assembled as # Sets the credentials. targets, see Scraping. Note: priority label is available as both value and keyword. An example of data being processed may be a unique identifier stored in a cookie. For NodeLegacyHostIP, and NodeHostName. The assignor configuration allow you to select the rebalancing strategy to use for the consumer group. relabeling is completed. the event was read from the event log. filepath from which the target was extracted. s. The match stage conditionally executes a set of stages when a log entry matches # CA certificate and bearer token file at /var/run/secrets/kubernetes.io/serviceaccount/. It is mutually exclusive with. # Optional `Authorization` header configuration. Defines a histogram metric whose values are bucketed. Promtail is a logs collector built specifically for Loki. This example of config promtail based on original docker config # The host to use if the container is in host networking mode. RE2 regular expression. For example: You can leverage pipeline stages with the GELF target, The JSON file must contain a list of static configs, using this format: As a fallback, the file contents are also re-read periodically at the specified That is because each targets a different log type, each with a different purpose and a different format. The Docker stage parses the contents of logs from Docker containers, and is defined by name with an empty object: The docker stage will match and parse log lines of this format: Automatically extracting the time into the logs timestamp, stream into a label, and log field into the output, this can be very helpful as docker is wrapping your application log in this way and this will unwrap it for further pipeline processing of just the log content. By default, the positions file is stored at /var/log/positions.yaml. Enables client certificate verification when specified. (?P.*)$". # the key in the extracted data while the expression will be the value. Go ahead, setup Promtail and ship logs to Loki instance or Grafana Cloud. The loki_push_api block configures Promtail to expose a Loki push API server. This makes it easy to keep things tidy. This means you don't need to create metrics to count status code or log level, simply parse the log entry and add them to the labels. The pod role discovers all pods and exposes their containers as targets. Promtail is an agent which ships the contents of the Spring Boot backend logs to a Loki instance. They "magically" appear from different sources. Counter and Gauge record metrics for each line parsed by adding the value. Below are the primary functions of Promtail: Discovers targets Log streams can be attached using labels Logs are pushed to the Loki instance Promtail currently can tail logs from two sources. The group_id defined the unique consumer group id to use for consuming logs. You may wish to check out the 3rd party That will control what to ingest, what to drop, what type of metadata to attach to the log line. To visualize the logs, you need to extend Loki with Grafana in combination with LogQL. Each log record published to a topic is delivered to one consumer instance within each subscribing consumer group. # Key from the extracted data map to use for the metric. This allows you to add more labels, correct the timestamp or entirely rewrite the log line sent to Loki. Promtail will keep track of the offset it last read in a position file as it reads data from sources (files, systemd journal, if configurable). Each solution focuses on a different aspect of the problem, including log aggregation. For example, if priority is 3 then the labels will be __journal_priority with a value 3 and __journal_priority_keyword with a . GitHub grafana / loki Public Notifications Fork 2.6k Star 18.4k Code Issues 688 Pull requests 81 Actions Projects 1 Security Insights New issue promtail: relabel_configs does not transform the filename label #3806 Closed I like to keep executables and scripts in ~/bin and all related configuration files in ~/etc. There are no considerable differences to be aware of as shown and discussed in the video. A static_configs allows specifying a list of targets and a common label set defined by the schema below. # It is mutually exclusive with `credentials`. Offer expires in hours. __metrics_path__ labels are set to the scheme and metrics path of the target # the label "__syslog_message_sd_example_99999_test" with the value "yes". # On large setup it might be a good idea to increase this value because the catalog will change all the time. For example, it has log monitoring capabilities but was not designed to aggregate and browse logs in real time, or at all. Prometheuss promtail configuration is done using a scrape_configs section. Get Promtail binary zip at the release page. Once the query was executed, you should be able to see all matching logs. In those cases, you can use the relabel node object in the address type order of NodeInternalIP, NodeExternalIP, Loki agents will be deployed as a DaemonSet, and they're in charge of collecting logs from various pods/containers of our nodes. For example, if you move your logs from server.log to server.01-01-1970.log in the same directory every night, a static config with a wildcard search pattern like *.log will pick up that new file and read it, effectively causing the entire days logs to be re-ingested. Metrics are exposed on the path /metrics in promtail. renames, modifies or alters labels. your friends and colleagues. # You can create a new token by visiting your [Cloudflare profile](https://dash.cloudflare.com/profile/api-tokens). Why did Ukraine abstain from the UNHRC vote on China? Here is an example: You can leverage pipeline stages if, for example, you want to parse the JSON log line and extract more labels or change the log line format. How to use Slater Type Orbitals as a basis functions in matrix method correctly? Offer expires in hours. The same queries can be used to create dashboards, so take your time to familiarise yourself with them. Promtail will serialize JSON windows events, adding channel and computer labels from the event received. # Patterns for files from which target groups are extracted. Supported values [debug. The logger={{ .logger_name }} helps to recognise the field as parsed on Loki view (but it's an individual matter of how you want to configure it for your application). Logging has always been a good development practice because it gives us insights and information to understand how our applications behave fully. Octet counting is recommended as the # This is required by the prometheus service discovery code but doesn't, # really apply to Promtail which can ONLY look at files on the local machine, # As such it should only have the value of localhost, OR it can be excluded. After the file has been downloaded, extract it to /usr/local/bin, Loaded: loaded (/etc/systemd/system/promtail.service; disabled; vendor preset: enabled), Active: active (running) since Thu 2022-07-07 10:22:16 UTC; 5s ago, 15381 /usr/local/bin/promtail -config.file /etc/promtail-local-config.yaml. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? # or you can form a XML Query. To specify which configuration file to load, pass the --config.file flag at the See recommended output configurations for Kubernetes REST API and always staying synchronized # Optional namespace discovery. Are there any examples of how to install promtail on Windows? The list of labels below are discovered when consuming kafka: To keep discovered labels to your logs use the relabel_configs section. relabeling phase. If you have any questions, please feel free to leave a comment. Will reduce load on Consul. Create new Dockerfile in root folder promtail, with contents FROM grafana/promtail:latest COPY build/conf /etc/promtail Create your Docker image based on original Promtail image and tag it, for example mypromtail-image # When false, or if no timestamp is present on the gelf message, Promtail will assign the current timestamp to the log when it was processed. # Note that `basic_auth` and `authorization` options are mutually exclusive. Promtail is an agent which ships the contents of local logs to a private Loki instance or Grafana Cloud. Only The scrape_configs block configures how Promtail can scrape logs from a series # This location needs to be writeable by Promtail. Bellow youll find an example line from access log in its raw form. Connect and share knowledge within a single location that is structured and easy to search. based on that particular pod Kubernetes labels. Lokis configuration file is stored in a config map. # Describes how to scrape logs from the journal. That will specify each job that will be in charge of collecting the logs. # Whether Promtail should pass on the timestamp from the incoming gelf message. a list of all services known to the whole consul cluster when discovering will have a label __meta_kubernetes_pod_label_name with value set to "foobar". You can add your promtail user to the adm group by running. A pattern to extract remote_addr and time_local from the above sample would be.

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