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Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.
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Ryan Uber b7587cac42 agent: allow config reload to modify checks/services persistence 
This change consolidates loading services and checks from both config
and persisted state into methods on the agent. As part of this, we
introduce optional persistence when calling RemoveCheck/RemoveService.

Fixes a bug where config reloads would kill persisted services/checks.
Also fixes an edge case:

1. A service or check is registered via the HTTP API
2. A new service or check definition with the same ID is added to config
3. Config is reloaded

The desired behavior (which this implements) is:

1. All services and checks deregistered in memory
2. All services and checks in config are registered first
3. All persisted checks are restored using the same logic as the agent
   start sequence, which prioritizes config over persisted, and removes
   any persistence files if new config counterparts are present.
 		2014-11-26 12:46:42 -08:00
acl acl: Test parsing JSON 2014-08-18 15:46:59 -07:00
bench Cutting v0.4.1 2014-10-17 11:00:59 -07:00
command agent: allow config reload to modify checks/services persistence 2014-11-26 12:46:42 -08:00
consul * Fix race condition on read/write of shutdown bool variable of server and connection pool. 2014-11-26 10:39:25 +01:00
demo/vagrant-cluster Install curl 2014-10-17 21:39:44 -07:00
deps deps: add 0.4.1 deps file, rename 0-4.1 to match naming convention 2014-11-15 22:40:36 -08:00
scripts Make the 'consul version' to return value that is from 'git describe --tags' 2014-11-18 22:15:58 +00:00
terraform Cutting v0.4.1 2014-10-17 11:00:59 -07:00
test Add some basic smoke tests for wrapTLSclient. 2014-06-29 18:11:32 -07:00
testutil agent: fix test cases 2014-11-19 16:36:18 -08:00
tlsutil Moved TLS Config stuff to tlsutil package 2014-11-18 11:03:36 -05:00
ui ui: fix session name overflow 2014-10-15 16:19:14 -07:00
watch Fix missing arguments 2014-11-01 22:56:48 +01:00
website docs: agent/watches: minor fixes 2014-11-26 13:48:33 +00:00
.gitignore ui: ignore compiled js, dist 2014-05-01 11:22:30 -04:00
.travis.yml Adding Travis file 2014-04-19 13:40:38 -07:00
CHANGELOG.md CHANGELOG updates 2014-10-20 10:20:13 -07:00
LICENSE Initial commit 2013-11-04 14:15:27 -08:00
Makefile Adding script to verify no UUID generation done in state store 2014-10-09 11:31:28 -07:00
README.md suggest 'go get -u ./... before running make 2014-09-02 10:49:28 -07:00
Vagrantfile Using older OS's for compilation 2014-05-01 11:09:00 -07:00
commands.go Only override version pre-release if blank 2014-11-24 11:05:11 -08:00
main.go main: Fixing app name 2014-04-11 16:23:05 -07:00
main_test.go Adding basic CLI infrastructure 2013-12-19 11:22:08 -08:00
version.go Make the 'consul version' to return value that is from 'git describe --tags' 2014-11-18 22:15:58 +00:00

README.md

Consul Build Status

Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable.

Consul provides several key features:

  • Service Discovery - Consul makes it simple for services to register themselves and to discover other services via a DNS or HTTP interface. External services such as SaaS providers can be registered as well.

  • Health Checking - Health Checking enables Consul to quickly alert operators about any issues in a cluster. The integration with service discovery prevents routing traffic to unhealthy hosts and enables service level circuit breakers.

  • Key/Value Storage - A flexible key/value store enables storing dynamic configuration, feature flagging, coordination, leader election and more. The simple HTTP API makes it easy to use anywhere.

  • Multi-Datacenter - Consul is built to be datacenter aware, and can support any number of regions without complex configuration.

Consul runs on Linux, Mac OS X, and Windows. It is recommended to run the Consul servers only on Linux, however.

Quick Start

An extensive quick quick start is viewable on the Consul website:

http://www.consul.io/intro/getting-started/install.html

Documentation

Full, comprehensive documentation is viewable on the Consul website:

http://www.consul.io/docs

Developing Consul

If you wish to work on Consul itself, you'll first need Go installed (version 1.2+ is required). Make sure you have Go properly installed, including setting up your GOPATH.

Next, clone this repository into $GOPATH/src/github.com/hashicorp/consul and then just type make. In a few moments, you'll have a working consul executable:

$ go get -u ./...
$ make
...
$ bin/consul
...

note: make will also place a copy of the binary in the first part of your $GOPATH

You can run tests by typing make test.

If you make any changes to the code, run make format in order to automatically format the code according to Go standards.