Loki json parse error. 3 and now trying to connect Grafana to Loki.
Loki json parse error This is in the new installation Grafana and Loki, but not old installation or upgraded Grafana. json' Expected behavior I would expect Promtail to skip non-existing key-value pairs in logs (maybe printing a warning). You really do not have any other option - the built-in implementation throws an exception on invalid JSON data and the only way to prevent that exception from halting your application is to catch it. Consider the parsing of NGINX logs to extract labels and values. Nov 4, 2020 · The Parsed fields are entirely a Grafana side (browser side) interpretation of the received logs, this functionality existed prior to Loki 2. If you can’t, the pattern and regexp parsers can be used for log lines with an unusual structure. When I try to pass the logs through the json pipeline, I still don’t see the labels being extracted. In this context, the JSON Loki pipeline stage emerges as a powerful tool for handling logs formatted in JSON (JavaScript Object Notation). Parsing of logs happen at query time. Descubre donde comprar "loki" otlp could not write json parse error unexpected más barato. org using the json parser. Jun 3, 2021 · If you look closely, all your logs are starting with stdout F - this is why the JSON parsing is failing. loki4j</groupId> <artifactId>loki-logback- Oct 10, 2011 · When I try to parse that string, I get "bad escaped character". Dec 22, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 0 query to generate an alert statement using familiar Prometheus rule syntax. We have alerts based on string matching (e. I already tried to add a json in the pipelineStages but nothing changed. Dec 2, 2019 · Describe the bug When pushing data form fluent-plugin-grafana-loki the API call results in error: parse error at line 1, col 2: syntax error: unexpected }, expecting Feb 15, 2025 · Hello, When I run the following query: {job="windows-security"} | json | event_id =~ "4660|4663" | line_format "{{. Data type inference: Grafana attempts to determine the data type of each field (e. jq will keep http_status as a string. result[]. Jan 25, 2021 · You signed in with another tab or window. limit. The log structure is a JSON string without any nesting. Is that something that the DD agent inserts into the log? Sep 28, 2023 · Describe the bug From version 2. Has there been any progress on testing the JSON parser switch in this issue? Jul 15, 2023 · Figured it out after spending way too much time on it. It seems to be failing due to escape characters in the JSON, although I'm not 100% sure – Jun 15, 2022 · Please improve the issue title as you see fit What happened: I tried a loki LogQL query in explore on https://play. Sep 18, 2023 · kindly suggest authentic solution for this. parse("[object Object]") because JSON. , string, number, boolean). To parse the log line, we need to add a parser, like json. This would help reduce cardinality when desired and it occurs at the edge (queriers). ① The format key will likely be a format string for Go’s time. log. 4 Converted it in a list of json: {"date": "2022… Parsing stages parse the current log line and extract data out of it. 1 deployed via a Container to receive the Python app log Descubre donde comprar "loki" otlp could not write json parse error unexpected "=" in label más barato. This pipeline uses a literal JMESPath expression to parse JSON fields with special characters in the name, like @ or . headers is missing but I can live with that. I was under the impression it would just skip parsing that line and add an __error__ label, rather than the query failing. Actions can: Dec 14, 2022 · Hi I am using the loki-logback-appender in my project. Transform stages transform extracted data from previous stages. Debug metrics. Mar 20, 2022 · This makes Grafana complain (“logfmtparser error”) Can I somehow prepare Loki’s query to NOT be aware or skip trying to parse json part? My current query is: {job Documentation Ask Grot AI Plugins Get Grafana Apr 21, 2023 · Hi, The promtail is not sent to Loki the fields in a parsed way, so in Loki’s UI I can’t search for a specific field. Field mapping: Detected fields are mapped to queryable attributes in Grafana's interface. Enabling us to monitor and analyze Nginx access logs effectively. May 8, 2024 · Describe the bug When sending logs with direct http request to loki in grafana cloud, it seems that loki didn't parse data correctly. A screenshot of a broken log record as it is returned in the . My logs are already in JSON format, however none of the underlying fields are being parsed as “Log Labels”. loki the logs are displayed in plain JSON as shown below. And also worth noting that the three log events showed up in the loki based graphs, even for recent data, and those also use the json filter. As we navigate the complex landscape of log management and observability, parsing and understanding log data become paramount. 0’s support for parsing data and currently the Loki API’s don’t provide Grafana any way to differentiate what’s parsed with LogQL | json vs what it can interpret itself. May 2, 2022 · I’m logging a JSON which is being shown as a detected field log in Grafana: Screenshot of detected fields Now I want to filter the logs by level name, but I can’t figure out how… I thought something like this would work, but doesn’t, no results are returned: {app="hello"} | json | line_format "{{. Loki supports JSON, logfmt, pattern, regexp and unpack parsers. log}}" | pattern `<ip> ` | unwrap ip [5m]) As one might expect we encounter SampleExtractionErr, however if we add the usual | __error__="" we get no results. Everything is on a k8s cluster. To Reproduce Send logs with the following content to Loki: {"test1": "\u0001", "some_ot Feb 15, 2025 · Hello, When I run the following query: {job="windows-security"} | json | event_id =~ "4660|4663" | line_format "{{. loki"} | json. 0, we’ve integrated a distributed rules evaluation engine so that you can write any Loki 2. Oct 15, 2021 · Using the config below, I’m able to get only the json into loki. Example Hardware and software maker community based around ortholinear or ergonomic keyboards and QMK firmware. 3. Feb 24, 2022 · Not sure if I can help much more than that… One thing I can say is that the json parser will slow things down quite a bit and can report many parsing errors. ② One of the json elements was “stream” so we extract that Feb 20, 2024 · Step:1 Configuring Nginx Access Logs in JSON Format for Loki: Loki can efficiently ingest and work with JSON-formatted logs. Reload to refresh your session. loki_process_dropped_lines_by_label_total (counter): Number of lines dropped when by_label_name is non-empty in stage. 400. Mar 29, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 05 20220610t133712,5260,78. JSON 解析器. 0 and 2. It's designed to be easy to use while providing powerful logging capabilities - parijatmukherjee/mohflow Apr 8, 2024 · Loki 支持以下类型的解析器： json JSON 解析器; logfmt 日志解析器; pattern 模版解析器; regexp 正则解析器; unpack Pack 内容解析器; 接下来对每个解析器进行说明和举例. I've tried different combos with json and format parameters but either log is transferred just as a string with no field (when json is false) or I get the a par Jul 19, 2024 · Saved searches Use saved searches to filter your results more quickly May 2, 2022 · And if you really want to apply json or logfmt parsing on a "best effort" approach, there should be a switch for these pipeline stages to "ignore parsing errors" or to mark fields as "optional". Click a log line to see its details. . 0, JSON payloads sent to the HTTP push endpoint fail when there are boolean values in the labels section (under the field stream). Loki appears to be finicky about what characters can be included in the name and content of labels, especially in the deprecated POST /api/prom/push which Serilog-Sinks-Loki uses. 00 Nov 2, 2020 · Saved searches Use saved searches to filter your results more quickly Nov 5, 2020 · I think the "auto parsers" like json, logfmt should allow optional parameters like | json foo bar which would only parse out the desired fields (foo and bar in this case). Some kind of flag on the json parser to ignore errors and not insert the __error__ label The ability to label_format errors away. Loki 2. Example Query: Apr 9, 2021 · I have log lines coming in formatted using logfmt. Formatting __error__ is explicitly blocked at the moment. Jul 17, 2023 · 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 Apr 25, 2023 · What are you trying to do? There are other parsers besides logfmt, might want to look at the documentation and see if one fits this use case. sum_over_time({container="nginx", namespace="production"}| json | line_format "{{. headers["X-Forwarded-Proto"]` Dec 22, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. values[] array of records, unescaped from Loki's JSON wrapping, showing the reason why Loki's JSON parser is throwing an error: an actual newline control character is printed in the log, thus breaking the JSON encoding. You should be able to fix that in your regex expression in your pipeline stage. Planear 0 0 expression needs to be a Go RE2 regex string. Jun 4, 2024 · Exploring the JSON Loki Pipeline Stage for Parsing JSON Logs. So it seems like it's only a matter of developing the right endpoint. Nov 6, 2023 · Loki is not a fully indexed storage. g. Aug 3, 2022 · Hi, I would like to parse a csv and plot its content in Grafana. I isolated the json using pattern parser, did a line format, converted to json, then tried to unwrap/sum over time. Do I need to Feb 2, 2021 · When I zoom back in on the three log lines above, between 0645 and 0730 this morning, I now see all three log lines, even with the json filter. Feb 8, 2025 · Loki is unable to parse logs in JSON format, causing JSON parser errors and malformed log issues. 3 and now trying to connect Grafana to Loki. Please come help us! type/bug Somehing is not working as expected Feb 15, 2021 · Hey Grafana Community, I’m new to PLG stack so please excuse any ignorance. parse(data); catch(ex) { json_data = JSON. 7" to collect the Python app JSON log output; Loki 2. Our logs files contain JSON objects in every line. loki_process_dropped_lines_total (counter): Number of lines dropped as part of a processing stage. SubjectUserName}} | {{. If a non-JSON message is present in the results, ALL messages have __error__=JSONParser Mar 29, 2023 · Describe the bug Queries fail when a certain log line is within the query and the unpack parser is used. Oct 5, 2024 · OrangeTux changed the title json fails to parse a string that contains a valid JSON array: Value looks like object, but can't find closing '}' symbol json fails to parse a string that contains a valid JSON array: "Value looks like object, but can't find closing '}' symbol" Oct 5, 2024 May 18, 2021 · it’s actually ‘query={namespace=“mon”}’ I just put this “<>” to show its a variable. I have a JSON file that is recreated every minute with a format like: { "Date";: "2023-10-23T11:43:57. , line contains), but these errors are affecting our alerts. Environment: Infrastructure: bare-metal; Deployment tool: docker swarm; Loki 2. The \\ in the string literal is an escaped backslash, so the string contains the escape code \-. We didn’t really make any changes that would explain Labels from Logs. It is already valid JSON as a string and parsing it through any JSON parser e. Apr 18, 2023 · You signed in with another tab or window. Aug 21, 2019 · component/loki good first issue These are great first issues. This is also a case where we are converting an event to a metric, which to be honest, if you really need super precise metrics, they should not be going to a logging system, but directly to a time-series metric store that supports the appropriate precision. To Reproduce Entrar con Google Entrar con Google. Oct 28, 2020 · Previously, in order to make alerts with Loki, you would configure Loki as a Prometheus data source and point Grafana to use that to generate Grafana alerts. parse(data. We couldn't find out exactly which format the log line has to have for Loki to fail - first we thought it might depend on our logs s Jan 28, 2021 · For all the use-cases I am familiar with rounding to ms, would be perfectly acceptable. parse to expect an array, but it then chokes on the object token, which does not fit the JSON grammar. Apr 22, 2015 · The best way to catch invalid JSON parsing errors is to put the calls to JSON. You switched accounts on another tab or window. In Loki 2. Every capture group (re) will be set into the extracted map, every capture group must be named: (?P<name>re). This started as a help & update subreddit for Jack Humbert's company, OLKB (originally Ortholinear Keyboards), but quickly turned into a larger maker community that is DIY in nature, exploring what's possible with hardware, software, and firmware. grafana. +", stream="stderr"} without adding the | json parser. 2. Feb 7, 2023 · Based on the error message, it looks like error logs (the stderr stream) is not structured JSON. { "log": "{\"additionalDetails\";:{\"body\":{},\& Descubre donde comprar "loki" otlp could not write json parse error unexpected "=" más barato. So now parseable fields come up. timeCreated Describe the bug json and logfmt parsers fail if a value ends with a unicode escape sequence in the control characters range (U+0000 through U+001F). Oct 2, 2024 · JSON parsing: Grafana parses the JSON structure of each log entry. We are shipping structured logs to Grafana Cloud using Opentelemetry Collector (applies to loki and otlphttp exporters). 6. Loki refuses to do anything with the query. parse coerces its argument to a string, and plain objects by default stringify to [object Object]. It’s easier to use the predefined parsers json and logfmt when you can. Problem is in the loki query, the part I need to match against is in a key-value pair and I can’t figure out how to drill down into it. Nov 5, 2020 · I think the "auto parsers" like json, logfmt should allow optional parameters like | json foo bar which would only parse out the desired fields (foo and bar in this case). 0 introduced new LogQL parsers that handle JSON, logfmt, and regex. 00 Dec 3, 2023 · I can't get this to work with Grafana cloud because of logfmt parsing issue. Dec 12, 2022 · Just using the json formatter will not turn your http_status into an int. The initial [leads JSON. 6 Loki: 2. Remove the JSON. Aug 16, 2021 · Hi Folks, I am trying to use loki and not able to properly configure promtail to parse JSON logs. Loki is stated as a Compose application with Read, Write components separated and Gateway put in front (example deployment from GitHub). One could even do it only when it is required: try: json_data = JSON. Change the query to the following and then press Run query: May 18, 2020 · I have run into a similar issue. We're seeing orders of difference in performance very similar to what's in #5405. But it's wasteful because LOKI has options to format json messages on the UI. From loki-gateway pod's logs: Notice that you get JSON log lines of googlebot requests. process doesn’t expose any component-specific debug information. parse line, because response is already parsed into an object Aug 25, 2022 · You signed in with another tab or window. The name of the capture group will be used as the key in the extracted map. Planear 0 0 Dec 14, 2022 · Hello, When querying logs from containers and using logfmt, Loki NGinx gateway log messages are shown as erroneous, stating: Error: LogFmtParserErr. It’s a problem for 2. Feb 21, 2020 · Saved searches Use saved searches to filter your results more quickly Jul 5, 2018 · Loki looks very promising! 🏆 Are there any plans to support ingestion of JSON log lines? It seems to be a pretty common structure for logs these days. While the JSON and logfmt parsers are fast and easy to use, the regex parser is neither. You should be able to see that with a query like {namespace=~". 1. Hoy. I do Oct 9, 2023 · Thank you for your comments! I tried to do exactly this, and I've edited my post to reflect that. Could someone help me to make this work? Dec 22, 2024 · Python logging package that provides structured JSON logging with support for console output, file logging, and Grafana Loki integration. All POST events from Loki container are shown with the warning sign in Grafana dashboard. Asking for help, clarification, or responding to other answers. Oct 27, 2023 · I am using Promtail to ship data to Loki, which I then visualize in Grafana. log}}" | levelname="ERROR" What am I missing? Describe the bug json and logfmt parsers fail if a value ends with a unicode escape sequence in the control characters range (U+0000 through U+001F). Jul 17, 2023 · 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 Jun 29, 2022 · Since the logs of our sample application are in JSON form, we can use a JSON parser to parse the logs with the expression {app="fake-logger"} | json, as shown below. To find the rate of requests by method and status, the query is scary and cumbersome. Hey, i got it working a few hours later and i've been able to create a function to post json content to loki from a python Jan 5, 2021 · Hi All, I’ve had Loki working for a while now without significant issues, however out of the blue it seemed to stop parsing json log lines. I am running k8 and I have “Loki-Stack” (all defaults) helm chart deployed in my EKS cluster. Feb 29, 2024 · What is the correct way to parse json logs in loki, promtail. This is a vanilla install of Loki. Provide details and share your research! But avoid …. To Reproduce The endpoint looks like https://123:glc_eyJ@logs-p Apr 13, 2024 · If I choose the tag caddy. With this expression I can parse them: {job="caddy. The extracted data is then available for use by other stages. data. Some of the entries contain invalid characters. This {my_label="my_label_value"} != "\"log. For the next person that encounters this, the correct format is: json proto=`request. log}}" | levelname="ERROR" What am I missing? Some way of extracting the json field named test-severity. Following are the dependencies which we are using in our Spring Boot project. github. (promtail). 0) to tail 'log. 7: 22255: August 14, 2023 Entrar con Google Entrar con Google. 有两种语法，不带参数的 | json 和带参数的 | json label="expression", another="expression" 解析器 Mar 1, 2023 · Installed Loki v2. timeCreated Descubre donde comprar "loki" otlp could not write json parse error unexpected "=" in label set, expected identifier or más barato. json is properly structured and when viewing the complete log line (in explore) I can see the various fields, but when expanding the entry or trying to filter by any of the json fields, it fails. Even after trying to filter out errors using: | error!="JSONParserErr" or | error="" The json stage is a parsing stage that reads the log line as JSON and accepts JMESPath expressions to extract data. The second stage will parse the value of extra from the extracted data as JSON and append the following key-value pairs to the set of extracted data: user: marco; Using a JMESPath Literal. The newer POST /loki/api/v1/push appears to be less finicky Jul 28, 2022 · We are trying to use the nginx logs that we’ve ingested into loki to find the number of requests group by the remote ip address. To Reproduce Send logs with the following content to Loki: {"test1": "\u0001", "some_ot May 2, 2022 · I’m logging a JSON which is being shown as a detected field log in Grafana: Screenshot of detected fields Now I want to filter the logs by level name, but I can’t figure out how… I thought something like this would work, but doesn’t, no results are returned: {app="hello"} | json | line_format "{{. 9. Aug 29, 2022 · I think more people run into this extra JSON parsing. Jun 30, 2022 · I have the same problem… Grafana: v9. Feb 5, 2022 · I am sending json logs to loki and visualizing in grafana. Aug 9, 2024 · thanks for you reply, i want to get the minimum id value。if could i want to get the minimum id’s origin log. level\": \"INFO\"" will be much faster than this {my_label="my_label_value"} | json | log_level!="INFO" Aug 9, 2021 · Log-parsing woes. This suggests that we Nov 28, 2021 · I ended up giving up and changing the log format to avoid using json. To Reproduce Given a locally run Dec 18, 2013 · JSON. The query works when I don't try to pass it through the logfmt parser. Image this is my log: { "name" : "somebody", "age" : & Feb 12, 2020 · Start Promtail (1. You should enable the CRI pipeline stage so these lines can be correctly parsed from docker: Configuration | Grafana Labs Apr 29, 2022 · Everything is Ok with the LogQL, but something is wrong with your JSON log line. The reason is that you are escaping a character that doesn't need escaping. Parse or a format string for strptime, this still needs to be decided, but the idea would be to specify a format string used to extract the timestamp data, for the regex parser there would also need to be a expr key used to extract the timestamp. You should have several detected fields (like "asctime", "created", "filename", etc) instead of just the "log" one, and you also should have the "Log labels" section. You signed out in another tab or window. Run into similar situation where we have to run JSON parser twice. Field extraction: It identifies key-value pairs within the JSON object. <dependency> <groupId>com. Initially, my logs looked like as following. 7. Grafana Loki. parse may be corrupted by chars that may be filtered out by trim then you can apply it. Here are some examples (can add more): https:/ May 10, 2021 · a separate Container running "fluent/fluent-bit:1. Dec 10, 2021 · Thanks for the answer! The first link has a great overview which I've not been completely aware of. 1 Sep 14, 2021 · We've been trying Loki with services that log JSON and are seeing significant performance differences between queries with and without the JSON parser. For the given pipeline: Mar 12, 2021 · You signed in with another tab or window. At this point, Loki hasn't yet parsed the JSON. parse() to a try/catch block. Without using parameters the json parser extracts it fine as test_severity` - but in my case i've got a very complex json structure I don't want to extract all labels. Service have a metrics endpoint for prometheus. Apr 9, 2024 · loki. I added Loki datasource from Grafana and configured the loki-gateway service url: Then I get the following error: Loki: Bad Request. Once over all log event and next over the log attribute. Action stages take extracted data from previous stages and do something with them. I have a csv like the following: date,key0,key1 20220610t133612,5260,3. We are using Java11 version. Feb 4, 2025 · could not write JSON response: 1:2: parse error: unexpected "=" in label set, expected identifier or "}" After researching I realized that the problem was only with some of the log entries. Schema Dec 12, 2022 · It is already valid JSON as a string and parsing it through any JSON parser e. Also, what exactly is the difference between the Loki json parser format and DD? To me, the screenshot looks like a “normal” JSON parsed log. trim()); } – Oct 16, 2021 · Describe the bug If the json coming from promtail includes an array, Loki will not extract data from that array. computer}} | {{. It shows the log line in plain text. 👍 4 tomra, Tristan971, zstlx, and icelynjennings reacted with thumbs up emoji May 19, 2022 · Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. After parsing the log using the JSON parser, you can see that the Grafana-provided panel is differentiated using different colors depending on the value of level, and that the Oct 27, 2023 · I am using Promtail to ship data to Loki, which I then visualize in Grafana. Authentication to data source failed. Some of the nested JSON is extracted eg: request_client_ip but not all of it, for example request. I did the installation on loki+promtail using the loki-stack chart. @PrashantTapase trim is not necesarilly needed but if you expect that the input for JSON. If you are looking for a place to start, start here! help wanted We would love help on these issues. 0. zvjni yppskyzq spgcl ecqb fdqy wiuhv qmzikp cwlhgp difoid npu zpwi vtqx nnhzel aftbfpk xphbbe