在RedHat上安装Fluentd的步骤
Fluentd作为一个日志收集系统，其用户还是非常大的，可是安装Fluentd的步骤非常繁琐，许多人在安装的时候就遇到了难题，下面小编就给大家介绍下RedHat安装Fluentd的方法。
下载fluentd安装包并解压
tar zxvf fluentd-0.10.6.tar.gz
cd fluentd-0.10.6
。/configure
make
切换到root账号
make install
提示如下
rake aborted！
Unable to determine name from existing gemspec. Use ：name =》 ‘gemname’ in #install_tasks to manually set it.
/usr/local/lib/fluent/ruby/lib/ruby/gems/1.9.1/gems/bundler-1.2.1/lib/bundler/gem_helper.rb:30:in `initialize‘
/usr/local/lib/fluent/ruby/lib/ruby/gems/1.9.1/gems/bundler-1.2.1/lib/bundler/gem_helper.rb:14:in `new’
/usr/local/lib/fluent/ruby/lib/ruby/gems/1.9.1/gems/bundler-1.2.1/lib/bundler/gem_helper.rb:14:in `install_tasks‘
/home/aircom/fluentd-0.10.6/Rakefile:6：in `《top （required）》’
/usr/local/lib/fluent/ruby/lib/ruby/1.9.1/rake.rb:2373:in `load‘
/usr/local/lib/fluent/ruby/lib/ruby/1.9.1/rake.rb:2373:in `raw_load_rakefile’
/usr/local/lib/fluent/ruby/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile‘
/usr/local/lib/fluent/ruby/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling’
/usr/local/lib/fluent/ruby/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile‘
/usr/local/lib/fluent/ruby/lib/ruby/1.9.1/rake.rb:1991:in `run’
-e:1：in `《main》‘
make： *** ［install］ Error 1
安装ruby
rz ruby-1.9.3-p0.tar.gz
tar zxvf ruby-1.9.3-p0.tar.gz
cd ruby-1.9.3-p0
。/configure
make
make install
验证ruby
［root@Server201 ruby-1.9.3-p0］# ruby -v
得到提示信息
ruby 1.9.3p0 （2011-10-30 revision 33570） ［x86_64-linux］
执行安装
gem install fluentd
提示如下，不必理会，等待安装，稍等一会儿（视网络情况）可看到安装进度。
/usr/local/lib/ruby/1.9.1/yaml.rb:56:in `《top （required）》’：
It seems your ruby installation is missing psych （for YAML output）。
To eliminate this warning， please install libyaml and reinstall your ruby.
命令执行完之后
执行fluentd --setup
提示Installed /etc/fluent/fluent.conf.
执行fluentd -c fluent.conf -vv &
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