in agent/config/agent_config.go [390:415]
func validateEnvoyLogLevel(logLevel *string) {
switch *logLevel {
case "info":
fallthrough
case "debug":
fallthrough
case "warn":
fallthrough
case "warning":
fallthrough
case "error":
fallthrough
case "trace":
fallthrough
case "critical":
fallthrough
case "off":
return
default:
if *logLevel != "" {
log.Warnf("Envoy log level [%s] is not supported, setting it to default [info].", *logLevel)
}
*logLevel = "info"
}
}