Chapter 6. Viewing cluster logs

If LOGGING_FILE_PATH points to a file, the default, use the logs utility, from the project, where the pod is located, to print out the contents of Fluentd log files:

$ oc exec <any-fluentd-pod> -- logs 1

For example:

$ oc exec fluentd-ht42r -n openshift-logging -- logs

If you are using LOGGING_FILE_PATH=console, the log collector writes logs to stdout/stderr`. You can retrieve the logs with the oc logs [-f] <pod_name> command, where the -f is optional.

$ oc logs -f <any-fluentd-pod> -n openshift-logging 1

For example

$ oc logs -f fluentd-ht42r -n openshift-logging

The contents of log files are printed out.

By default, Fluentd reads logs from the tail, or end, of the log.