Sensu 是一款开源的基础设施和分布式应用程序监控解决方案；
Sensu is an open source monitoring tool for ephemeral infrastructure and distributed applications.
Sensu 是一款基于Agent的监控系统， 内置自动发现功能， 非常适合云计算环境;
It is an agent based monitoring system with built-in auto-discovery, making it very well-suited for cloud environments.
Sensu 通过服务检测 来监控服务的健康状态和收集遥测数据;
Sensu uses service checks to monitor service health and collect telemetry data.
Sensu 同时提供了大量友好的OpenAPI, 可以通过API 进行配置， 外部数据传输，及Sensu 数据访问等;
It also has a number of well defined APIs for configuration, external data input, and to provide access to Sensu's data.
Sensu 可扩展性非常强， 被称之为"监控路由器";
Sensu is extremely extensible and is commonly referred to as "the monitoring router".
To learn more about Sensu, please visit the website and read the documentation.
Sensu Go 是用Golang对Sensu 进行了"重写", 同时提供了新的特性，以及优化了运维操作;
Sensu Go is a complete rewrite of Sensu in Go, with new capabilities and reduced operational overhead. It eliminates several sources of friction for new and experienced Sensu users.
Sensu 需要依赖Redis 或RabbitMQ等外部服务才能运行, 重写后的Sensu Go 则只需要依赖内嵌的etcd 作为数据的永久存储即可运行， 相比老版本的Sensu 更易于使用和维护; 同时Sensu Go 也可以配置外部的etcd 作为数据的存储方案;
The original Sensu required external services like Redis or RabbitMQ. Sensu Go can rely on an embedded etcd datastore for persistence, making the product easier to get started with. External etcd services can also be used, in the event that you already have them deployed.
Sensu Go 用js替换了老板中的Ruby版本写的过滤器表达式;
Sensu Go replaces Ruby expressions with JavaScript filter expressions, by embedding a JavaScript interpreter.
与老版不同的是， Sensu Go 中的事件一定会被处理， 除非被显示过滤掉;
Unlike the original Sensu, Sensu Go events are always handled, unless explicitly filtered.
Sensu Go installer packages are available for a number of computing platforms (e.g. Debian/Ubuntu, RHEL/Centos, etc), but the easiest way to get started is with the official Docker image, sensu/sensu.
See the installation documentation to get started.
The various components of Sensu Go can be manually built from this repository. You will first need Go 1.13.3 installed. Then, you should clone this repository outside of the GOPATH since Sensu Go uses Go Modules:
$ git clone https://github.com/sensu/sensu-go.git
$ cd sensu-go
To compile and then run Sensu Go within a single step:
$ go run ./cmd/sensu-agent
$ go run ./cmd/sensu-backend
$ go run ./cmd/sensuctl
To build Sensu Go binaries and save them into the bin/ directory:
$ go build -o bin/sensu-agent ./cmd/sensu-agent
$ go build -o bin/sensu-backend ./cmd/sensu-backend
$ go build -o bin/sensuctl ./cmd/sensuctl
To build Sensu Go binaries with the version information:
# sensu-agent
$ go build -ldflags '-X "github.com/sensu/sensu-go/version.Version=5.14.0" -X "github.com/sensu/sensu-go/version.BuildDate=2019-10-08" -X "github.com/sensu/sensu-go/version.BuildSHA='`git rev-parse HEAD`'"' -o bin/sensu-agent ./cmd/sensu-agent
# sensu-backend
$ go build -ldflags '-X "github.com/sensu/sensu-go/version.Version=5.14.0" -X "github.com/sensu/sensu-go/version.BuildDate=2019-10-08" -X "github.com/sensu/sensu-go/version.BuildSHA='`git rev-parse HEAD`'"' -o bin/sensu-backend ./cmd/sensu-backend
# sensuctl
$ go build -ldflags '-X "github.com/sensu/sensu-go/version.Version=5.14.0" -X "github.com/sensu/sensu-go/version.BuildDate=2019-10-08" -X "github.com/sensu/sensu-go/version.BuildSHA='`git rev-parse HEAD`'"' -o bin/sensuctl ./cmd/sensuctl