VictoriaMetrics/docs/VictoriaLogs/data-ingestion/Logstash.md
Andrii Chubatiuk 1731c0eabf
app/vlinsert: support getting _msg_field, _time_field, _stream_fields and _ignore_fields from headers
*  Many collectors don't support forwarding url query params to the remote system. It makes impossible to define stream fields for it. Workaround with proxy between VictoriaLogs and log shipper is too complicated solution.

* This commit adds the following changes:
 * Adds fallback to to headers params, if query param is empty for:
     _msg_field -> VL-Msg-Field
    _stream_fields -> VL-Stream-Fields
    _ignore_fields -> VL-Ignore-Fields
    _time_field -> VL-Time-Field
 * removes deprecations from victorialogs compose files, added more
output format examples for logstash, telegraf, fluent-bit

 related issue: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5310
2024-09-03 17:43:26 +02:00

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5.1 KiB
Markdown

---
weight: 3
title: Logstash setup
disableToc: true
menu:
docs:
parent: "victorialogs-data-ingestion"
weight: 3
aliases:
- /VictoriaLogs/data-ingestion/Logstash.html
- /victorialogs/data-ingestion/logstash.html
- /victorialogs/data-ingestion/Logstash.html
---
VictoriaLogs supports given below Logstash outputs:
- [Elasticsearch](#elasticsearch)
- [Loki](#loki)
- [HTTP JSON](#http)
## Elasticsearch
Specify [`output.elasticsearch`](https://www.elastic.co/guide/en/logstash/current/plugins-outputs-elasticsearch.html) section in the `logstash.conf` file
for sending the collected logs to [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/):
```logstash
output {
elasticsearch {
hosts => ["http://localhost:9428/insert/elasticsearch/"]
parameters => {
"_msg_field" => "message"
"_time_field" => "@timestamp"
"_stream_fields" => "host.name,process.name"
}
}
}
```
Substitute `localhost:9428` address inside `hosts` with the real TCP address of VictoriaLogs.
See [these docs](https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters) for details on the `parameters` section.
It is recommended verifying whether the initial setup generates the needed [log fields](https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model)
and uses the correct [stream fields](https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields).
This can be done by specifying `debug` [parameter](https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters)
and inspecting VictoriaLogs logs then:
```logstash
output {
elasticsearch {
hosts => ["http://localhost:9428/insert/elasticsearch/"]
parameters => {
"_msg_field" => "message"
"_time_field" => "@timestamp"
"_stream_fields" => "host.name,process.name"
"debug" => "1"
}
}
}
```
If some [log fields](https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model) must be skipped
during data ingestion, then they can be put into `ignore_fields` [parameter](https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters).
For example, the following config instructs VictoriaLogs to ignore `log.offset` and `event.original` fields in the ingested logs:
```logstash
output {
elasticsearch {
hosts => ["http://localhost:9428/insert/elasticsearch/"]
parameters => {
"_msg_field" => "message"
"_time_field" => "@timestamp"
"_stream_fields" => "host.hostname,process.name"
"ignore_fields" => "log.offset,event.original"
}
}
}
```
If the Logstash sends logs to VictoriaLogs in another datacenter, then it may be useful enabling data compression via `http_compression: true` option.
This usually allows saving network bandwidth and costs by up to 5 times:
```logstash
output {
elasticsearch {
hosts => ["http://localhost:9428/insert/elasticsearch/"]
parameters => {
"_msg_field" => "message"
"_time_field" => "@timestamp"
"_stream_fields" => "host.hostname,process.name"
}
http_compression => true
}
}
```
By default, the ingested logs are stored in the `(AccountID=0, ProjectID=0)` [tenant](https://docs.victoriametrics.com/victorialogs/#multitenancy).
If you need storing logs in other tenant, then specify the needed tenant via `custom_headers` at `output.elasticsearch` section.
For example, the following `logstash.conf` config instructs Logstash to store the data to `(AccountID=12, ProjectID=34)` tenant:
```logstash
output {
elasticsearch {
hosts => ["http://localhost:9428/insert/elasticsearch/"]
custom_headers => {
"AccountID" => "1"
"ProjectID" => "2"
}
parameters => {
"_msg_field" => "message"
"_time_field" => "@timestamp"
"_stream_fields" => "host.hostname,process.name"
}
}
}
```
## Loki
Specify [`output.loki`](https://grafana.com/docs/loki/latest/send-data/logstash/) section in the `logstash.conf` file
for sending the collected logs to [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/):
```conf
output {
loki {
url => "http://victorialogs:9428/insert/loki/api/v1/push?_stream_fields=host.ip,process.name&_msg_field=message&_time_field=@timestamp"
}
}
```
## HTTP
Specify [`output.http`](https://www.elastic.co/guide/en/logstash/current/plugins-outputs-http.html) section in the `logstash.conf` file
for sending the collected logs to [VictoriaLogs](https://docs.victoriametrics.com/victorialogs/):
```conf
output {
url => "http://victorialogs:9428/insert/jsonline?_stream_fields=host.ip,process.name&_msg_field=message&_time_field=@timestamp"
format => "json"
http_method => "post"
}
```
See also:
- [Data ingestion troubleshooting](https://docs.victoriametrics.com/victorialogs/data-ingestion/#troubleshooting).
- [How to query VictoriaLogs](https://docs.victoriametrics.com/victorialogs/querying/).
- [Logstash `output.elasticsearch` docs](https://www.elastic.co/guide/en/logstash/current/plugins-outputs-elasticsearch.html).
- [Docker-compose demo for Logstash integration with VictoriaLogs](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/deployment/docker/victorialogs/logstash).