mirror of
https://mau.dev/maunium/synapse.git
synced 2024-12-21 06:53:59 +01:00
83 lines
2.1 KiB
Markdown
83 lines
2.1 KiB
Markdown
|
# Structured Logging
|
||
|
|
|
||
|
|
A structured logging system can be useful when your logs are destined for a machine to parse and process. By maintaining its machine-readable characteristics, it enables more efficient searching and aggregations when consumed by software such as the "ELK stack".
|
||
|
|
|
||
|
|
Synapse's structured logging system is configured via the file that Synapse's `log_config` config option points to. The file must be YAML and contain `structured: true`. It must contain a list of "drains" (places where logs go to).
|
||
|
|
|
||
|
|
A structured logging configuration looks similar to the following:
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
structured: true
|
||
|
|
|
||
|
|
loggers:
|
||
|
|
synapse:
|
||
|
|
level: INFO
|
||
|
|
synapse.storage.SQL:
|
||
|
|
level: WARNING
|
||
|
|
|
||
|
|
drains:
|
||
|
|
console:
|
||
|
|
type: console
|
||
|
|
location: stdout
|
||
|
|
file:
|
||
|
|
type: file_json
|
||
|
|
location: homeserver.log
|
||
|
|
```
|
||
|
|
|
||
|
|
The above logging config will set Synapse as 'INFO' logging level by default, with the SQL layer at 'WARNING', and will have two logging drains (to the console and to a file, stored as JSON).
|
||
|
|
|
||
|
|
## Drain Types
|
||
|
|
|
||
|
|
Drain types can be specified by the `type` key.
|
||
|
|
|
||
|
|
### `console`
|
||
|
|
|
||
|
|
Outputs human-readable logs to the console.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
- `location`: Either `stdout` or `stderr`.
|
||
|
|
|
||
|
|
### `console_json`
|
||
|
|
|
||
|
|
Outputs machine-readable JSON logs to the console.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
- `location`: Either `stdout` or `stderr`.
|
||
|
|
|
||
|
|
### `console_json_terse`
|
||
|
|
|
||
|
|
Outputs machine-readable JSON logs to the console, separated by newlines. This
|
||
|
|
format is not designed to be read and re-formatted into human-readable text, but
|
||
|
|
is optimal for a logging aggregation system.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
- `location`: Either `stdout` or `stderr`.
|
||
|
|
|
||
|
|
### `file`
|
||
|
|
|
||
|
|
Outputs human-readable logs to a file.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
- `location`: An absolute path to the file to log to.
|
||
|
|
|
||
|
|
### `file_json`
|
||
|
|
|
||
|
|
Outputs machine-readable logs to a file.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
- `location`: An absolute path to the file to log to.
|
||
|
|
|
||
|
|
### `network_json_terse`
|
||
|
|
|
||
|
|
Delivers machine-readable JSON logs to a log aggregator over TCP. This is
|
||
|
|
compatible with LogStash's TCP input with the codec set to `json_lines`.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
- `host`: Hostname or IP address of the log aggregator.
|
||
|
|
- `port`: Numerical port to contact on the host.
|