Docs Self-Managed Reference rpk Commands rpk transform rpk transform logs You are viewing the Self-Managed v24.3 beta documentation. We welcome your feedback at the Redpanda Community Slack #beta-feedback channel. To view the latest available version of the docs, see v24.2. rpk transform logs View logs for a transform. Data transform’s STDOUT and STDERR are captured during runtime and written to an internally managed topic _redpanda.transform_logs. This command outputs logs for a single transform over a period of time and printing them to STDOUT. The logs can be printed in various formats. By default, only logs that have been emitted are displayed. Use the --follow flag to stream new logs continuously. Filtering The --head and --tail flags are mutually exclusive and limit the number of log entries from the beginning or end of the range, respectively. The --since and --until flags define a time range. Use one or both flags to limit the log output to a desired period of time. Both flags accept values in the following formats: Value Description now the current time, useful for --since=now 13 digits parsed as a Unix millisecond 9 digits parsed as a Unix second YYYY-MM-DD parsed as a day, UTC YYYY-MM-DDTHH:MM:SSZ parsed as RFC3339, UTC; fractional seconds optional (.MMM) -dur a negative duration from now dur a positive duration from now Durations are parsed simply: Value Description 3ms three milliseconds 10s ten seconds 9m nine minutes 1h one hour 1m3ms one minute and three milliseconds Formatting Logs can be displayed in a variety of formats using --format. The default --format=text prints the log record’s body line by line. When --format=wide is specified, the output includes a prefix that is the date of the log line and a level for the record. The INFO level corresponds to being emitted on the transform’s STDOUT, while the WARN level is used for STDERR. The --format=json flag emits logs in the JSON encoded version of the Open Telemetry LogRecord protocol buffer. Examples Reads logs within the last hour: rpk transform logs --since=-1h Reads logs prior to 30 minutes ago: rpk transform logs --until=-30m The following command reads logs between noon and 1pm on March 12th: rpk transform logs my-transform --since=2024-03-12T12:00:00Z --until=2024-03-12T13:00:00Z Usage rpk transform logs NAME [flags] Aliases logs, log Flags Value Type Description -f, --follow - Specify if the logs should be streamed. --format string Output format (json,yaml,text,wide,help) (default "text"). --head int The number of log entries to fetch from the start. -h, --help - Help for logs. --since timestamp Start reading logs after this time (now, -10m, 2024-02-10). See Filtering for format details. --tail int The number of log entries to fetch from the end. --until timestamp Read logs up unto this time (-1h, 2024-02-10T13:00:00Z). See Filtering for format details. --config string Redpanda or rpk config file; default search paths are /var/lib/redpanda/.config/rpk/rpk.yaml, $PWD/redpanda.yaml, and /etc/redpanda/redpanda.yaml. -X, --config-opt stringArray Override rpk configuration settings; '-X help' for detail or '-X list' for terser detail. --profile string rpk profile to use. -v, --verbose - Enable verbose logging. Back to top × Simple online edits For simple changes, such as fixing a typo, you can edit the content directly on GitHub. Edit on GitHub Or, open an issue to let us know about something that you want us to change. Open an issue Contribution guide For extensive content updates, or if you prefer to work locally, read our contribution guide . Was this helpful? thumb_up thumb_down group Ask in the community mail Share your feedback group_add Make a contribution rpk transform list rpk transform pause