Hi
I have a nodejs application that is running in Kubernetes, and i have filebeat setup as a DaemonSet - all working pretty well, i'm trying to get the logs from my nodejs app which uses the Winston logger and logs in json format, with the info/error etc log levels being colour coded. When i try to pick the logs up with filebeat i get this error:
{"log":"2020-10-06T12:46:27.387Z\u0009ERROR\u0009readjson/json.go:52\u0009Error decoding JSON: invalid character '\\x1b' looking for beginning of value\n","stream":"stderr","time":"2020-10-06T12:46:27.387887165Z"}
Example log event:
{"log":"\u001b[32minfo\u001b[39m: gel.api.jsonp.middlewares.session.extractor {\"json\":\"{\\\"data\\\":\\\"SESSION NOT FOUND\\\"}\",\"timestamp\":\"2020-10-06T08:46:50.883Z\",\"platformKey\":\"fdddf\",\"threadID\":\"3d0ds3db-7de3-4175-b6ee-3e41f94ce223\",\"app\":\"gel.api\",\"correlationID\":\"no-value\"}\n","stream":"stdout","time":"2020-10-06T08:46:50.88369154Z"}
Config:
- type: container
paths:
- /var/log/containers/gel-*api*.log
json.keys_under_root: true
json.add_error_key: true
json.message_key: json
processors:
- add_kubernetes_metadata:
host: ${NODE_NAME}
matchers:
- logs_path:
logs_path: "/var/log/containers/"
- add_tags:
tags: nodejs-logs
I'm thinking maybe strip out the first bits (loglevel, etc) but how? Is there a better way i can handle these events/log entries?
Any help would be appreciated, thanks!