如何运行 Prometheus Ruby 客户端

Question

我想运行 Prometheus Ruby 客户端，收集统计值并保存在 Prometheus 数据库中。

我已按照此处的说明进行操作：机架中间件 https://github.com/prometheus/client_ruby#rack-middleware

我已经安装了两个 gem，prometheus 和 prometheus-client。

exporter.rb (https://github.com/prometheus/client_ruby/blob/master/lib/prometheus/middleware/exporter.rb) 和 collector.rb (https://github.com/prometheus/client_ruby/blob/master/lib/prometheus/middleware/collector.rb) 保存在以下位置：prometheus/middleware

我已将 config.ru (https://github.com/prometheus/client_ruby#rack-middleware) 保存在本地文件夹中。

然后我启动了机架网络服务器：rackup -d config.ru -I /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/prometheus-client-0.6.0/lib -I /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/quantile-0.2.0/lib

-I include 语句是查找所需文件所必需的。

然后我得到了这个错误：

/home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/prometheus-client-0.6.0/lib -I /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/quantile-0.2.0/lib
nil
Exception `ArgumentError' at /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:86 - wrong number of arguments (given 2, expected 1)
Exception `ArgumentError' at /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:49 - wrong number of arguments (given 2, expected 1)
Exception `ArgumentError' at /home/sven/.rbenv/versions/2.3.3/bin/rackup:22 - wrong number of arguments (given 2, expected 1)
/home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/deflater.rb:20:in `initialize': wrong number of arguments (given 2, expected 1) (ArgumentError)
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:86:in `new'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:86:in `block in use'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:134:in `block in to_app'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:134:in `each'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:134:in `inject'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:134:in `to_app'
    from /home/sven/StarPerfMonitor_v2.0.0/config.ru:13:in `<main>'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:49:in `eval'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:49:in `new_from_string'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:40:in `parse_file'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/server.rb:277:in `build_app_and_options_from_config'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/server.rb:199:in `app'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/server.rb:314:in `wrapped_app'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/server.rb:242:in `start'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/lib/rack/server.rb:141:in `start'
    from /home/sven/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-1.5.5/bin/rackup:4:in `<top (required)>'
    from /home/sven/.rbenv/versions/2.3.3/bin/rackup:22:in `load'
    from /home/sven/.rbenv/versions/2.3.3/bin/rackup:22:in `<main>'

Answer 1

您似乎正在使用client_ruby 0.6.0，而Prometheus::Middleware 仅适用于client_ruby 0.7.0。

查看https://github.com/prometheus/client_ruby/tree/v0.6.0

Answer 2

这个问题太棘手了，我决定切换到 InfluxDB。 我能够在几分钟内运行 Ruby 客户端。对我来说，它似乎比普罗米修斯好得多。对不起。