fluentd v0.12 gem install fluent-plugin-webhdfs error

由 https://github.com/fluent/fluentd-kubernetes-daemonset 找到了dockerfile文件

编译了 https://github.com/fluent/fluentd-kubernetes-daemonset/blob/master/docker-image/v0.12/debian-elasticsearch/Dockerfile

一切顺利

编译完成后 

发现缺少 fluent-plugin-webhdfs

通过docker run 进入docker 测试安装 

运行 

root@e100069201209:/home/fluent# gem install fluent-plugin-webhdfs
Building native extensions.  This could take a while...
ERROR:  Error installing fluent-plugin-webhdfs:
	ERROR: Failed to build gem native extension.

    current directory: /fluentd/vendor/bundle/ruby/2.3.0/gems/strptime-0.2.3/ext/strptime
/usr/bin/ruby2.3 -r ./siteconf20180426-92-1vr0vab.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /fluentd/vendor/bundle/ruby/2.3.0/gems/strptime-0.2.3 for inspection.
Results logged to /fluentd/vendor/bundle/ruby/2.3.0/extensions/x86_64-linux/2.3.0/strptime-0.2.3/gem_make.out

　　

无法安装, 

git上提了issue, 开发者给出的建议是: https://docs.fluentd.org/v1.0/articles/plugin-management#gem-and-native-extension

但是我是没有看出上面缺少哪个插件

想了半天 

发现原始文件里面  https://github.com/fluent/fluentd-kubernetes-daemonset/blob/master/docker-image/v0.12/debian-elasticsearch/Gemfile 有这个文件

将 fluent-plugin-webhdfs加入 解决问题

# AUTOMATICALLY GENERATED
# DO NOT EDIT THIS FILE DIRECTLY, USE /templates/Gemfile.erb

source "https://rubygems.org"

gem "fluentd", "0.12.33"
gem "fluent-plugin-secure-forward"
gem "fluent-plugin-record-reformer"
gem "fluent-plugin-elasticsearch"
gem "fluent-plugin-kubernetes_metadata_filter"
gem "ffi"
gem "fluent-plugin-systemd"

gem "fluent-plugin-webhdfs"