Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.

consul api-gateway kubernetes ecs service-discovery service-mesh vault

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freddygv 37190c0d0d Avoid potential deadlock using non-blocking send Deadlock scenario: 1. Due to scheduling, the state runner sends one snapshot into snapCh and then attempts to send a second. The first send succeeds because the channel is buffered, but the second blocks. 2. Separately, Manager.Watch is called by the xDS server after getting a discovery request from Envoy. This function acquires the manager lock and then blocks on receiving the CurrentSnapshot from the state runner. 3. Separately, there is a Manager goroutine that reads the snapshots from the channel in step 1. These reads are done to notify proxy watchers, but they require holding the manager lock. This goroutine goes to acquire that lock, but can't because it is held by step 2. Now, the goroutine from step 3 is waiting on the one from step 2 to release the lock. The goroutine from step 2 won't release the lock until the goroutine in step 1 advances. But the goroutine in step 1 is waiting for the one in step 3. Deadlock. By making this send non-blocking step 1 above can proceed. The coalesce timer will be reset and a new valid snapshot will be delivered after it elapses or when one is requested by xDS.		4 years ago
.changelog	chore: changelog for 9660 (#9668 )	4 years ago
.circleci	ci: fail cherrypick if git push fails (#9673 )	4 years ago
.github	ci: add script to check for .changelog file in PRs (#9641 )	4 years ago
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agent	Avoid potential deadlock using non-blocking send	4 years ago
api	Move header methods from config to client	4 years ago
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tlsutil	Add flags to support CA generation for Connect (#9585 )	4 years ago
types	Move RPC router from Client/Server and into BaseDeps (#8559 )	4 years ago
ui	ui: Adds unique-id helper (#9676 )	4 years ago
vendor	Merge pull request #9302 from hashicorp/dnephin/add-service-3	4 years ago
version	changelog: add 1.9.1 entries (#9486 )	4 years ago
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CHANGELOG.md	Release 1.9.3 (#9680 )	4 years ago
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README.md	Added docs link to Learn tutorial for Kind. (#8610 )	4 years ago
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codecov.yml	Update all the references in CI and makefile to the bindata file location	4 years ago
go.mod	Merge pull request #9302 from hashicorp/dnephin/add-service-3	4 years ago
go.sum	Merge pull request #9302 from hashicorp/dnephin/add-service-3	4 years ago
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README.md

Consul

Website: https://www.consul.io
Tutorials: HashiCorp Learn
Forum: Discuss

Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.

Consul provides several key features:

Multi-Datacenter - Consul is built to be datacenter aware, and can support any number of regions without complex configuration.
Service Mesh/Service Segmentation - Consul Connect enables secure service-to-service communication with automatic TLS encryption and identity-based authorization. Applications can use sidecar proxies in a service mesh configuration to establish TLS connections for inbound and outbound connections without being aware of Connect at all.
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.

Consul runs on Linux, Mac OS X, FreeBSD, Solaris, and Windows. A commercial version called Consul Enterprise is also available.

Please note: We take Consul's security and our users' trust very seriously. If you believe you have found a security issue in Consul, please responsibly disclose by contacting us at security@hashicorp.com.

Quick Start

A few quick start guides are available on the Consul website:

Standalone binary install: https://learn.hashicorp.com/tutorials/consul/get-started-install
Minikube install: https://learn.hashicorp.com/tutorials/consul/kubernetes-minikube
Kind install: https://learn.hashicorp.com/tutorials/consul/kubernetes-kind
Kubernetes install: https://learn.hashicorp.com/tutorials/consul/kubernetes-deployment-guide

Documentation

Full, comprehensive documentation is available on the Consul website:

https://www.consul.io/docs

Contributing

Thank you for your interest in contributing! Please refer to CONTRIBUTING.md for guidance.