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100 lines
3.6 KiB
Markdown
100 lines
3.6 KiB
Markdown
# Logstash setup
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Specify [`output.elasticsearch`](https://www.elastic.co/guide/en/logstash/current/plugins-outputs-elasticsearch.html) section in the `logstash.conf` file
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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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output {
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elasticsearch {
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hosts => ["http://localhost:9428/insert/elasticsearch/"]
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parameters => {
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"_msg_field" => "message"
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"_time_field" => "@timestamp"
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"_stream_fields" => "host.name,process.name"
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}
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}
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}
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```
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Substitute `localhost:9428` address inside `hosts` 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 `parameters` section.
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It is recommended verifying whether the initial setup generates the needed [log fields](https://docs.victoriametrics.com/VictoriaLogs/keyConcepts.html#data-model)
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and uses the correct [stream fields](https://docs.victoriametrics.com/VictoriaLogs/keyConcepts.html#stream-fields).
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This can be done by specifying `debug` [parameter](https://docs.victoriametrics.com/VictoriaLogs/data-ingestion/#http-parameters)
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and inspecting VictoriaLogs logs then:
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```conf
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output {
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elasticsearch {
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hosts => ["http://localhost:9428/insert/elasticsearch/"]
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parameters => {
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"_msg_field" => "message"
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"_time_field" => "@timestamp"
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"_stream_fields" => "host.name,process.name"
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"debug" => "1"
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}
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}
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}
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```
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If some [log fields](https://docs.victoriametrics.com/VictoriaLogs/keyConcepts.html#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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```conf
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output {
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elasticsearch {
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hosts => ["http://localhost:9428/insert/elasticsearch/"]
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parameters => {
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"_msg_field" => "message"
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"_time_field" => "@timestamp"
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"_stream_fields" => "host.hostname,process.name"
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"ignore_fields" => "log.offset,event.original"
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}
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}
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}
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```
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If the Logstash sends logs to VictoriaLogs in another datacenter, then it may be useful enabling data compression via `http_compression: true` option.
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This usually allows saving network bandwidth and costs by up to 5 times:
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```conf
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output {
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elasticsearch {
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hosts => ["http://localhost:9428/insert/elasticsearch/"]
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parameters => {
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"_msg_field" => "message"
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"_time_field" => "@timestamp"
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"_stream_fields" => "host.hostname,process.name"
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}
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http_compression => true
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}
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}
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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/#multitenancy).
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If you need storing logs in other tenant, then specify the needed tenant via `custom_headers` at `output.elasticsearch` section.
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For example, the following `logstash.conf` config instructs Logstash to store the data to `(AccountID=12, ProjectID=34)` tenant:
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```conf
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output {
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elasticsearch {
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hosts => ["http://localhost:9428/insert/elasticsearch/"]
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custom_headers => {
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"AccountID" => "1"
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"ProjectID" => "2"
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}
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parameters => {
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"_msg_field" => "message"
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"_time_field" => "@timestamp"
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"_stream_fields" => "host.hostname,process.name"
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}
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}
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}
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```
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The ingested log entries can be queried according to [these docs](https://docs.victoriametrics.com/VictoriaLogs/querying/).
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See also [data ingestion troubleshooting](https://docs.victoriametrics.com/VictoriaLogs/data-ingestion/#troubleshooting) docs.
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