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docs: fix typos in vlogs rules examples (#7457)

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* fix typos in rules definition. Otherwise, they can't pass validation
* add code types for rendered examples

### Describe Your Changes

Please provide a brief description of the changes you made. Be as
specific as possible to help others understand the purpose and impact of
your modifications.

### Checklist

The following checks are **mandatory**:

- [ ] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).

Signed-off-by: hagen1778 <roman@victoriametrics.com>
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Roman Khavronenko 2024-11-06 13:55:08 +01:00 committed by GitHub
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docs/VictoriaLogs/vmalert.md
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@ -22,7 +22,7 @@ _Note: This page provides only integration instructions for vmalert and Victoria
## Quick Start ## Quick Start
Run vmalert with `-rule.defaultRuleType=vlogs` cmd-line flag. Run vmalert with `-rule.defaultRuleType=vlogs` cmd-line flag.
``` ```sh
./bin/vmalert -rule=alert.rules \ # Path to the files or http url with alerting and/or recording rules in YAML format. ./bin/vmalert -rule=alert.rules \ # Path to the files or http url with alerting and/or recording rules in YAML format.
-datasource.url=http://localhost:9428 \ # VictoriaLogs address. -datasource.url=http://localhost:9428 \ # VictoriaLogs address.
-rule.defaultRuleType=vlogs \ # Set default rules type to VictoriaLogs. -rule.defaultRuleType=vlogs \ # Set default rules type to VictoriaLogs.
@ -51,7 +51,7 @@ With configuration example above, vmalert will perform the following interaction
For a complete list of command-line flags, visit https://docs.victoriametrics.com/vmalert/#flags or execute `./vmalert --help` command. For a complete list of command-line flags, visit https://docs.victoriametrics.com/vmalert/#flags or execute `./vmalert --help` command.
The following are key flags related to integration with VictoriaLogs: The following are key flags related to integration with VictoriaLogs:
``` ```shellhelp
-datasource.url string -datasource.url string
Datasource address supporting log stats APIs, which can be a single VictoriaLogs node or a proxy in front of VictoriaLogs. Supports address in the form of IP address with a port (e.g., http://127.0.0.1:8428) or DNS SRV record. Datasource address supporting log stats APIs, which can be a single VictoriaLogs node or a proxy in front of VictoriaLogs. Supports address in the form of IP address with a port (e.g., http://127.0.0.1:8428) or DNS SRV record.
-notifier.url array -notifier.url array
@ -94,7 +94,7 @@ Check the complete group attributes [here](https://docs.victoriametrics.com/vmal
#### Alerting rules #### Alerting rules
Examples: Examples:
``` ```yaml
groups: groups:
- name: ServiceLog - name: ServiceLog
interval: 5m interval: 5m
@ -108,7 +108,7 @@ groups:
interval: 5m interval: 5m
rules: rules:
- alert: TooManyFailedRequest - alert: TooManyFailedRequest
expr: '* | extract "ip=<ip> " | extract "status_code=<code>;" | stats by (ip, code) count() if (code:~4.*) as failed, count() as total| math failed / total as failed_percentage| filter failed_percentage :> 0.01 | fields ip,failed_percentage' expr: '* | extract "ip=<ip> " | extract "status_code=<code>;" | stats by (ip) count() if (code:~4.*) as failed, count() as total| math failed / total as failed_percentage| filter failed_percentage :> 0.01 | fields ip,failed_percentage'
annotations: annotations:
description: "Connection from address {{$labels.ip}} has {{$value}}% failed requests in last 5 minutes" description: "Connection from address {{$labels.ip}} has {{$value}}% failed requests in last 5 minutes"
``` ```
@ -116,7 +116,7 @@ groups:
#### Recording rules #### Recording rules
Examples: Examples:
``` ```yaml
groups: groups:
- name: RequestCount - name: RequestCount
interval: 5m interval: 5m
@ -136,24 +136,28 @@ groups:
It's recommended to omit the [time filter](https://docs.victoriametrics.com/victorialogs/logsql/#time-filter) in rule expression. It's recommended to omit the [time filter](https://docs.victoriametrics.com/victorialogs/logsql/#time-filter) in rule expression.
By default, vmalert automatically appends the time filter `_time: <group_interval>` to the expression. By default, vmalert automatically appends the time filter `_time: <group_interval>` to the expression.
For instance, the rule below will be evaluated every 5 minutes, and will return the result with logs from the last 5 minutes: For instance, the rule below will be evaluated every 5 minutes, and will return the result with logs from the last 5 minutes:
``` ```yaml
groups: groups:
interval: 5m - name: Requests
rules: interval: 5m
- alert: TooManyFailedRequest rules:
expr: '* | extract "ip=<ip> " | extract "status_code=<code>;" | stats by (ip, code) count() if (code:~4.*) as failed, count() as total| math failed / total as failed_percentage| filter failed_percentage :> 0.01 | fields ip,failed_percentage' - alert: TooManyFailedRequest
annotations: "Connection from address {{$labels.ip}} has {{$$value}}% failed requests in last 5 minutes" expr: '* | extract "ip=<ip> " | extract "status_code=<code>;" | stats by (ip) count() if (code:~4.*) as failed, count() as total| math failed / total as failed_percentage| filter failed_percentage :> 0.01 | fields ip,failed_percentage'
annotations:
description: "Connection from address {{$labels.ip}} has {{$value}}% failed requests in last 5 minutes"
``` ```
User can also specify a customized time filter if needed. For example, rule below will be evaluated every 5 minutes, User can also specify a customized time filter if needed. For example, rule below will be evaluated every 5 minutes,
but will calculate result over the logs from the last 10 minutes. but will calculate result over the logs from the last 10 minutes.
``` ```yaml
groups: groups:
interval: 5m - name: Requests
rules: interval: 5m
- alert: TooManyFailedRequest rules:
expr: '_time: 10m | extract "ip=<ip> " | extract "status_code=<code>;" | stats by (ip, code) count() if (code:~4.*) as failed, count() as total| math failed / total as failed_percentage| filter failed_percentage :> 0.01 | fields ip,failed_percentage' - alert: TooManyFailedRequest
annotations: "Connection from address {{$labels.ip}} has {{$$value}}% failed requests in last 10 minutes" expr: '_time: 10m | extract "ip=<ip> " | extract "status_code=<code>;" | stats by (ip) count() if (code:~4.*) as failed, count() as total| math failed / total as failed_percentage| filter failed_percentage :> 0.01 | fields ip,failed_percentage'
annotations:
description: "Connection from address {{$labels.ip}} has {{$value}}% failed requests in last 10 minutes"
``` ```
Please note, vmalert doesn't support [backfilling](#rules-backfilling) for rules with a customized time filter now. (Might be added in future) Please note, vmalert doesn't support [backfilling](#rules-backfilling) for rules with a customized time filter now. (Might be added in future)
@ -161,7 +165,7 @@ Please note, vmalert doesn't support [backfilling](#rules-backfilling) for rules
## Rules backfilling ## Rules backfilling
vmalert supports alerting and recording rules backfilling (aka replay) against VictoriaLogs as the datasource. vmalert supports alerting and recording rules backfilling (aka replay) against VictoriaLogs as the datasource.
``` ```sh
./bin/vmalert -rule=path/to/your.rules \ # path to files with rules you usually use with vmalert ./bin/vmalert -rule=path/to/your.rules \ # path to files with rules you usually use with vmalert
-datasource.url=http://localhost:9428 \ # VictoriaLogs address. -datasource.url=http://localhost:9428 \ # VictoriaLogs address.
-rule.defaultRuleType=vlogs \ # Set default rule type to VictoriaLogs. -rule.defaultRuleType=vlogs \ # Set default rule type to VictoriaLogs.
@ -177,7 +181,7 @@ See more details about backfilling [here](https://docs.victoriametrics.com/vmale
LogsQL allows users to obtain multiple stats from a single expression. LogsQL allows users to obtain multiple stats from a single expression.
For instance, the following query calculates 50th, 90th and 99th percentiles for the `request_duration_seconds` field over logs for the last 5 minutes: For instance, the following query calculates 50th, 90th and 99th percentiles for the `request_duration_seconds` field over logs for the last 5 minutes:
``` ```logsql
_time:5m | stats _time:5m | stats
quantile(0.5, request_duration_seconds) p50, quantile(0.5, request_duration_seconds) p50,
quantile(0.9, request_duration_seconds) p90, quantile(0.9, request_duration_seconds) p90,
@ -185,7 +189,7 @@ _time:5m | stats
``` ```
This expression can also be used in recording rules as follows: This expression can also be used in recording rules as follows:
``` ```yaml
groups: groups:
- name: requestDuration - name: requestDuration
interval: 5m interval: 5m