fluent/fluentd · error · Fluent::ConfigError

<user> sections required if user_auth enabled

Error message

<user> sections required if user_auth enabled

What it means

Error "<user> sections required if user_auth enabled" thrown in fluent/fluentd.

Source

Thrown at lib/fluent/plugin/in_forward.rb:128

    def configure(conf)
      super

      if @source_hostname_key
        # TODO: add test
        if @resolve_hostname.nil?
          @resolve_hostname = true
        elsif !@resolve_hostname # user specifies "false" in config
          raise Fluent::ConfigError, "resolve_hostname must be true with source_hostname_key"
        end
      end
      @enable_field_injection = @source_address_key || @source_hostname_key

      raise Fluent::ConfigError, "'tag' parameter must not be empty" if @tag && @tag.empty?
      raise Fluent::ConfigError, "'add_tag_prefix' parameter must not be empty" if @add_tag_prefix && @add_tag_prefix.empty?

      if @security
        if @security.user_auth && @security.users.empty?
          raise Fluent::ConfigError, "<user> sections required if user_auth enabled"
        end
        if !@security.allow_anonymous_source && @security.clients.empty?
          raise Fluent::ConfigError, "<client> sections required if allow_anonymous_source disabled"
        end

        @nodes = []

        @security.clients.each do |client|
          if client.host && client.network
            raise Fluent::ConfigError, "both of 'host' and 'network' are specified for client"
          end
          if !client.host && !client.network
            raise Fluent::ConfigError, "Either of 'host' and 'network' must be specified for client"
          end
          source = nil
          if client.host
            begin
              source = IPSocket.getaddress(client.host)

View on GitHub (pinned to dd45c6e18d)

When it happens

Trigger: Thrown at lib/fluent/plugin/in_forward.rb:128 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of fluent/fluentd@dd45c6e18d (2026-08-21). Data as JSON: /api/errors/fb0429584e145959. Report an issue: GitHub.