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Version: v4.31

write_syslog

Writes events as syslog.

write_syslog [facility=int, severity=int, timestamp=time, hostname=string,
              app_name=string, process_id=string, message_id=string,
              structured_data=record, message=string]

Description​

Writes events as RFC 5424 Syslog messages.

All options to the operator try to get values for the respective fields from the same-named fields in the input events if unspecified.

facility = int (optional)​

Set the facility of the syslog.

Defaults to 1 if null.

severity = int (optional)​

Set the severity of the syslog.

Defaults to 6 if null.

timestamp = time (optional)​

Set the timestamp of the syslog.

hostname = string (optional)​

Set the hostname of the syslog.

app_name = string (optional)​

Set the application name of the syslog.

process_id = string (optional)​

Set the process id of the syslog.

message_id = string (optional)​

Set the message id of the syslog.

structured_data = record (optional)​

Set the structured data of the syslog.

message = string (optional)​

Set the message of the syslog.

Examples​

Create a syslog manually​

from {
  facility: 1,
  severity: 1,
  timestamp: now(),
  hostname: "localhost",
  structured_data: {
    origin: {
      key: "value",
    },
  },
  message: "Tenzir",
}
write_syslog
<9>1 2025-03-31T13:28:55.971210Z localhost - - - [origin key="value"] Tenzir

See Also​

read_syslog