td-agent aborts in booting linux.

[masasuzu]

When td-agent.conf includes multibyte character comments, td-agent aborts in booting linux.

## in /var/log/boot.log

Starting td-agent:  * Stopping save kernel messages                                          [ OK ]
 * Starting crash report submission daemon                                                   [ OK ]
/opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config/basic_parser.rb:56:in `skip': invalid byte sequence in US-ASCII (ArgumentError)
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config/basic_parser.rb:56:in `skip'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config/basic_parser.rb:80:in `spacing'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config/v1_parser.rb:58:in `parse_element'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config/v1_parser.rb:41:in `parse!'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config/v1_parser.rb:31:in `parse'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/config.rb:29:in `parse'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/supervisor.rb:466:in `read_config'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/supervisor.rb:130:in `start'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/lib/fluent/command/fluentd.rb:171:in `<top (required)>'
        from /opt/td-agent/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from /opt/td-agent/embedded/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/fluentd-0.12.20/bin/fluentd:6:in `<top (required)>'
        from /opt/td-agent/embedded/bin/fluentd:23:in `load'
        from /opt/td-agent/embedded/bin/fluentd:23:in `<top (required)>'
        from /usr/sbin/td-agent:7:in `load'
        from /usr/sbin/td-agent:7:in `<main>'
 * td-agent

But when using service command (or /etc/init.d/td-agent) manually, td-agent succeeds to start.

/etc/inint.d/td-agent start
# or
service td-agent start

steps to reproduce

• 1 add below line to /etc/td-agent/td-agent.conf

# あいうえお

• 2 reboot OS.
• 3 then td-agent aborts. check /var/log/boot.log.

version

I tried two environments.

• Ubuntu 12.04
• Ubuntu 14.04

$ /opt/td-agent/embedded/bin/ruby --version
ruby 2.1.8p440 (2015-12-16 revision 53160) [x86_64-linux]

$ /opt/td-agent/usr/sbin/td-agent --version
td-agent 0.12.20

$ aptitude show td-agent
Package: td-agent
New: yes
State: installed
Automatically installed: no
Version: 2.3.1-0
Priority: extra
Section: misc
Maintainer: Treasure Data, Inc
Architecture: amd64
Uncompressed Size: 217 M
Conflicts: td-agent
Description: Treasure Agent: A data collector for Treasure Data

Homepage: http://treasuredata.com

workaround

If I add export LANG="en_US.UTF-8" to /etc/init.d/td-agent or /etc/default/td-agent, then td-agent starts successfully in booting linux.

Or delete all comments.