[prometheus,rails]如何在rails服务器上启用prometheus

Posted 2023-02-16

【中文标题】[prometheus,rails]如何在rails服务器上启用prometheus

【英文标题】：[promethues, rails]How to enable promethues on rails server

【发布时间】：2015-11-24 23:52:42

【问题描述】：

我有一个 live rails 应用程序，我正在尝试使用它的 Ruby Client 安装 prometheus monitoring service。

我在服务器上运行教程，它运行良好，但一个小时后 merics url 死了。

如何让它在我的实时服务器上运行？

如果我添加一个现有项目，如下所示，Prometheus 会给出“未找到”错误

I, [2015-08-31T10:54:40.274066 #3542]  INFO -- : Refreshing Gem list
/PATH/shared/bundle/ruby/2.2.0/gems/activesupport-4.1.6/lib/active_support/dependencies.rb:247:in `require': cannot load such file -- prometheus/client/rack/collector (LoadError)
    from /PATH/shared/bundle/ruby/2.2.0/gems/activesupport-4.1.6/lib/active_support/dependencies.rb:247:in `block in require'
    from /PATH/shared/bundle/ruby/2.2.0/gems/activesupport-4.1.6/lib/active_support/dependencies.rb:232:in `load_dependency'
    from /PATH/shared/bundle/ruby/2.2.0/gems/activesupport-4.1.6/lib/active_support/dependencies.rb:247:in `require'
    from config.ru:8:in `block in <main>'
    from /PATH/shared/bundle/ruby/2.2.0/gems/rack-1.5.5/lib/rack/builder.rb:55:in `instance_eval'
    from /PATH/shared/bundle/ruby/2.2.0/gems/rack-1.5.5/lib/rack/builder.rb:55:in `initialize'
    from config.ru:1:in `new'
    from config.ru:1:in `<main>'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn.rb:48:in `eval'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn.rb:48:in `block in builder'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:768:in `call'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:768:in `build_app!'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:632:in `init_worker_process'
    from PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:655:in `worker_loop'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:529:in `spawn_missing_workers'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:540:in `maintain_worker_count'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/lib/unicorn/http_server.rb:294:in `join'
    from /PATH/shared/bundle/ruby/2.2.0/gems/unicorn-4.9.0/bin/unicorn:126:in `<top (required)>'
    from /PATH/shared/bundle/ruby/2.2.0/bin/unicorn:23:in `load'
    from /PATH/shared/bundle/ruby/2.2.0/bin/unicorn:23:in `<main>'

我有两台服务器

promethus_server live_server + prometheus 客户端）

live_server 和 promethus_client 在不同的路径中。

我在服务器上手动运行 promethus 客户端：

$ rails new client
$ bundle (adding promethus-client Gem)
$ vi config.ru (add promethus lib)
$ rail s --binding=IP

这对吗？

【问题讨论】：

您是否将 gem 安装到该服务器？

这是我最近升级的应用程序的 config.ru 的样子： require ::File.expand_path('../config/environment', FILE) require ' rack' 需要 'prometheus/client/rack/collector' 需要 'prometheus/client/rack/exporter' 使用 Prometheus::Client::Rack::Collector 使用 Prometheus::Client::Rack::Exporter 运行 Rails.application跨度>

@Dan 我添加 gem 并使用您的配置文件更改配置文件。 THX :)

不客气。我继续添加它作为答案。

【参考方案1】：

这是我最近升级的应用程序的config.ru 的样子：

require ::File.expand_path('../config/environment', FILE)
require 'rack'
require 'prometheus/client/rack/collector'
require 'prometheus/client/rack/exporter'

use Prometheus::Client::Rack::Collector
use Prometheus::Client::Rack::Exporter

run Rails.application