Step 2: In Data Sources, you can search the source by name or type. Any other queries to help debug would be appreciated! The logfmt parser can operate in two modes: The logfmt parser can be added using | logfmt and will extract all keys and values from the logfmt formatted log line. To filters those errors see the pipeline errors section. Set the data sources basic configuration options: Note: To troubleshoot configuration and other issues, check the log file located at /var/log/grafana/grafana.log on Unix systems, or in /data/log on other platforms and manual installations. ~). The query statement consists of the following parts. Query results are gathered by successive evaluation of parts of the query from left to right. These LogQL query examples have explanations of what the queries accomplish. How about saving the world? Between two vectors, a binary arithmetic operator is applied to each entry in the left-hand side vector and its matching element in the right-hand vector. If a capture is not matched, the pattern parser will stop. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. and only include errors whose duration is above ten seconds. For grouping tags, we can use without or by to distinguish them. By default, the system matches and, unless, and or operations with all entries in the right vector. It takes a single string parameter | line_format "{{.label_name}}", which is the template format. {container="query-frontend",namespace="loki-dev"} |= "metrics.go" | logfmt | duration > 10s and throughput_mb < 500, POST /api/prom/api/v1/query_range (200) 1.5s, 0.191.12.2 - - [10/Jun/2021:09:14:29 +0000] "GET /api/plugins/versioncheck HTTP/1.1" 200 2 "-" "Go-http-client/2.0" "13.76.247.102, 34.120.177.193" "TLSv1.2" "US" "", - - <_> " <_>" <_> "" <_>, level=debug ts=2021-06-10T09:24:13.472094048Z caller=logging.go:66 traceID=0568b66ad2d9294c msg="POST /loki/api/v1/push (204) 16.652862ms", <_> msg=" () ", | duration >= 20ms or size == 20kb and method!~"2..", | duration >= 20ms or size == 20kb | method!~"2..", | duration >= 20ms or size == 20kb,method!~"2..", | duration >= 20ms or size == 20kb method!~"2..", | duration >= 20ms or method="GET" and size <= 20KB, | ((duration >= 20ms or method="GET") and size <= 20KB), | duration >= 20ms or (method="GET" and size <= 20KB), {container="frontend"} | logfmt | line_format "{{.query}} {{.duration}}", rate({filename="/var/log/nginx/access.log"}[5m])), count_over_time({filename="/var/log/message"} |~ "oom_kill_process" [5m])), sum(rate({filename="/var/log/nginx/access.log"}[5m])) by (pod), topk(5,sum(rate({filename="/var/log/nginx/access.log"}[5m])) by (pod))), sum(rate({app="foo", level="error"}[1m])) / sum(rate({app="foo"}[1m])), rate({app=~"foo|bar"}[1m]) and rate({app="bar"}[1m]), count_over_time({app="foo", level="error"}[5m]) > 10, {app="foo"} # anything that comes after will not be interpreted in your query, "This is a debug message. error level logs will be written to stderr and the actual log messages are generated in JSON format and a new log message will be created every 500 milliseconds. The logfmt parser produces the duration and status_code labels, Return the per-second rate of all non-timeout errors Connect Grafana to data sources, apps, and more, with Grafana Alerting, Grafana Incident, and Grafana OnCall, Frontend application observability web SDK, Try out and share prebuilt visualizations, Contribute to technical documentation provided by Grafana Labs, Help build the future of open source observability software Parses a formatted string and returns the time value it represents in the provided timezone. 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: The aggregation operators can either be used to aggregate over all label values or a set of distinct label values by including a without or a by clause: parameter is required when using topk and bottomk. In the official Loki Grafana documentation a pattern parser is mentioned: Grafana Labs LogQL LogQL: Log Query Language Loki comes with its own PromQL-inspired language for queries called LogQL. An example that mutates is the expression. The parsers json, logfmt, pattern, regexp and unpack are currently supported.
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