I have a cloud that was upgraded from juju 1.x. The controller logs are constantly (4 times/second) spammed with:
2020-10-01 20:03:51 WARNING juju.environs.config config.go:1616 unknown config field "rsyslog-ca-key"
2020-10-01 20:03:51 WARNING juju.environs.config config.go:1616 unknown config field "rsyslog-ca-cert"
2020-10-01 20:03:51 WARNING juju.environs.config config.go:1616 unknown config field "rsyslog-ca-cert"
2020-10-01 20:03:51 WARNING juju.environs.config config.go:1616 unknown config field "rsyslog-ca-key"
I believe those keys used to be valid model-config attributes under juju 1, but not anymore. How can I remove them? I am only able to modify their values, not delete the attribute altogether.
Ok scratch that, resetting the keys removed them from model-config.
I suggest explaining this behavior in the `juju model-config --help` output, though.