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6adb3f0dc2
### Describe Your Changes
Marked fluentd in victorialogs roadmap
Added fluentd syslog example setup
### Checklist
The following checks are **mandatory**:
- [ ] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).
(cherry picked from commit 05a64a8c14)
110 lines
4.2 KiB
Markdown
110 lines
4.2 KiB
Markdown
---
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weight: 2
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title: Fluentd setup
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disableToc: true
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menu:
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docs:
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parent: "victorialogs-data-ingestion"
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weight: 2
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aliases:
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- /VictoriaLogs/data-ingestion/Fluentd.html
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- /victorialogs/data-ingestion/fluentd.html
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- /victorialogs/data-ingestion/Fluentd.html
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---
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VictoriaLogs supports given below Fluentd outputs:
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- [Loki](#loki)
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- [HTTP JSON](#http)
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## Loki
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Specify [loki output](https://docs.fluentd.io/manual/pipeline/outputs/loki) section in the `fluentd.conf`
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for sending the collected logs to [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/):
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```conf
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<match **>
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@type loki
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url "http://localhost:9428/insert"
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<buffer>
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flush_interval 10s
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flush_at_shutdown true
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</buffer>
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custom_headers {"VL-Msg-Field": "log", "VL-Time-Field": "time", "VL-Stream-Fields": "path"}
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buffer_chunk_limit 1m
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</match>
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```
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## HTTP
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Specify [http output](https://docs.fluentd.io/manual/pipeline/outputs/http) section in the `fluentd.conf`
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for sending the collected logs to [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/):
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```fluentd
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<match **>
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@type http
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endpoint "http://localhost:9428/insert/jsonline"
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headers {"VL-Msg-Field": "log", "VL-Time-Field": "time", "VL-Stream-Fields": "path"}
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</match>
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```
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Substitute the host (`localhost`) and port (`9428`) with the real TCP address of VictoriaLogs.
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See [these docs](https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters) for details on the query args specified in the `endpoint`.
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It is recommended verifying whether the initial setup generates the needed [log fields](https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model)
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and uses the correct [stream fields](https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields).
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This can be done by specifying `debug` [parameter](https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters) in the `endpoint`
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and inspecting VictoriaLogs logs then:
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```fluentd
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<match **>
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@type http
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endpoint "http://localhost:9428/insert/jsonline&debug=1"
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headers {"VL-Msg-Field": "log", "VL-Time-Field": "time", "VL-Stream-Fields": "path"}
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</match>
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```
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If some [log fields](https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model) must be skipped
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during data ingestion, then they can be put into `ignore_fields` [parameter](https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters).
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For example, the following config instructs VictoriaLogs to ignore `log.offset` and `event.original` fields in the ingested logs:
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```fluentd
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<match **>
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@type http
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endpoint "http://localhost:9428/insert/jsonline&ignore_fields=log.offset,event.original"
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headers {"VL-Msg-Field": "log", "VL-Time-Field": "time", "VL-Stream-Fields": "path"}
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</match>
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```
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If the Fluentd sends logs to VictoriaLogs in another datacenter, then it may be useful enabling data compression via `compress gzip` option.
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This usually allows saving network bandwidth and costs by up to 5 times:
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```fluentd
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<match **>
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@type http
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endpoint "http://localhost:9428/insert/jsonline&ignore_fields=log.offset,event.original"
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headers {"VL-Msg-Field": "log", "VL-Time-Field": "time", "VL-Stream-Fields": "path"}
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compress gzip
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</match>
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```
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By default, the ingested logs are stored in the `(AccountID=0, ProjectID=0)` [tenant](https://docs.victoriametrics.com/victorialogs/keyconcepts/#multitenancy).
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If you need storing logs in other tenant, then specify the needed tenant via `header` options.
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For example, the following `fluentd.conf` config instructs Fluentd to store the data to `(AccountID=12, ProjectID=34)` tenant:
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```fluentd
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<match **>
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@type http
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endpoint "http://localhost:9428/insert/jsonline"
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headers {"VL-Msg-Field": "log", "VL-Time-Field": "time", "VL-Stream-Fields": "path"}
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header AccountID 12
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header ProjectID 23
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</match>
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```
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See also:
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- [Data ingestion troubleshooting](https://docs.victoriametrics.com/victorialogs/data-ingestion/#troubleshooting).
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- [How to query VictoriaLogs](https://docs.victoriametrics.com/victorialogs/querying/).
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- [Fluentd HTTP output config docs](https://docs.fluentd.org/output/http)
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- [Docker-compose demo for Fluentd integration with VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/deployment/docker/victorialogs/fluentd).
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