Log Aggregators¶

There are many aggregators that will accept Syslog and OTLP (Otel Logging), some of which are open source, free for self-hosting and work well.

Some aggregators can directly consume remote logs, while others need an ingestion/transformation engine like Datadog's Vector, FluentD etc. These also allow logs to be pulled in, so events in HomeAssistant can be seen in the context of what's happening in HAOS Apps, docker containers, network switches, firewalls etc.

OpenObserve¶

OO can accept Otel logging natively or via Vector, and now needs Vector for Syslog.

To configure the preferred OTLP logging, a few overrides are needed.

Use the built-in configuration generator in OpenObserve, as below:

OpenObserve has a non-default port, a non-default API end-point and needs additional headers.

Remote Logger has options to support all of these, as in this example:

Note that Raw Basic has been selected rather than Basic since the token provided by OpenObserve has already been encoded.

GreptimeDB¶

Use Vector for ingestion, and no transforms are needed

sources:
  otlp:
    type: opentelemetry
    http:
      address: 0.0.0.0:4318
    use_otlp_decoding: false
sinks:
  greptime:
    inputs:
      - "otlp.logs"
    type: "greptimedb_logs"
    endpoint: http://greptime:4000
    dbname: public
    compression: gzip
    table: logs