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README.md

Sensu Go

CircleCI: CircleCI Build Status

Sensu is an open source monitoring tool for ephemeral infrastructure and distributed applications. It is an agent based monitoring system with built-in auto-discovery, making it very well-suited for cloud environments. Sensu uses service checks to monitor service health and collect telemetry data. It also has a number of well defined APIs for configuration, external data input, and to provide access to Sensu's data. 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.

What is Sensu Go?

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.

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 replaces Ruby expressions with JavaScript filter expressions, by embedding a JavaScript interpreter.

Unlike the original Sensu, Sensu Go events are always handled, unless explicitly filtered.

Installation

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.

NOTE: Starting with Sensu Go version 6.0, for instances built from source, the web UI is now a standalone product — it is no longer included with the Sensu backend. To build the web UI from source, use the installation instructions in the Sensu Go Web repository.

Building from source

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

Contributing

For guidelines on how to contribute to this project, how to hack on Sensu, and information about what we require from project contributors, please see CONTRIBUTING.md.

Sensu is and always will be open source, and we continue to highly value community contribution. The packages we’re releasing for new versions are from our Enterprise repo; Sensu Go is the upstream for Sensu Enterprise (as they’d say in the Go community: Sensu Go is vendored into the Sensu Enterprise Go repo). We encourage you to download new versions, as the functionality will be identical to what you find in the public repo, and access to the enterprise-only features can be unlocked with a license key. Because these releases are in our Enterprise repo, there may be times that you don’t see the actual work being done on an issue you open, but that doesn’t mean we’re not working on it! Our team is committed to updating progress on open issues in the sensu-go repo, even if that work is being done in our Enterprise repo.

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