Logging configuration changes [logging-config-changes]

::::{warning} {{kib}} 8.0.0 and later uses a new logging system. Before you upgrade, read the documentation for your {{kib}} version. ::::

$$$logging-pattern-format-old-and-new-example$$$

Parameter	Log record in pattern* format	Legacy log record in *text format
@timestamp	ISO8601_TZ 2012-01-31T23:33:22.011-05:00	Absolute 23:33:22.011
logger	parent.child	['parent', 'child']
level	DEBUG	['debug']
meta	stringified JSON object {"to": "v8"}	N/A
pid	can be configured as %pid	N/A

$$$logging-json-format-old-and-new-example$$$

Parameter	Log record in json* format	Legacy log record *json format
@timestamp	ISO8601_TZ 2012-01-31T23:33:22.011-05:00	ISO8601 2012-01-31T23:33:22.011Z
logger	log.logger: parent.child	tags: ['parent', 'child']
level	log.level: DEBUG	tags: ['debug']
meta	merged in log record {... "to": "v8"}	merged in log record {... "to": "v8"}
pid	process.pid: 12345	pid: 12345
type	N/A	type: log
error	{ message, name, stack }	{ message, name, stack, code, signal }