d335aa371e
The consul-k8s endpoints controller issues catalog register and manual virtual ip updates without first checking to see if the updates would be effectively not changing anything. This is supposed to be reasonable because the state store functions do the check for a no-op update and should discard repeat updates so that downstream blocking queries watching one of the resources don't fire pointlessly (and CPU wastefully). While this is true for the check/service/node catalog updates, it is not true for the "manual virtual ip" updates triggered by the PUT /v1/internal/service-virtual-ip. Forcing the connect injector pod to recycle while watching some lightly modified FSM code can show that a lot of updates are of the update list of ips from [A] to [A]. Immediately following this stray update you can see a lot of activity in proxycfg and xds packages waking up due to blocking queries triggered by this. This PR skips updates that change nothing both: - at the RPC layer before passing it to raft (ideally) - if the write does make it through raft and get applied to the FSM (failsafe) |
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| .changelog | ||
| .github | ||
| .release | ||
| acl | ||
| agent | ||
| api | ||
| bench | ||
| build-support | ||
| command | ||
| connect | ||
| docs | ||
| envoyextensions | ||
| grafana | ||
| grpcmocks/proto-public | ||
| internal | ||
| ipaddr | ||
| lib | ||
| logging | ||
| proto | ||
| proto-public | ||
| sdk | ||
| sentinel | ||
| service_os | ||
| snapshot | ||
| test | ||
| test-integ | ||
| testing/deployer | ||
| testrpc | ||
| tlsutil | ||
| tools/internal-grpc-proxy | ||
| troubleshoot | ||
| types | ||
| ui | ||
| version | ||
| website | ||
| .copywrite.hcl | ||
| .dockerignore | ||
| .gitignore | ||
| .go-version | ||
| .golangci.yml | ||
| .grpcmocks.yaml | ||
| .pre-commit-config.yaml | ||
| CHANGELOG.md | ||
| Dockerfile | ||
| Dockerfile-windows | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| buf.work.yaml | ||
| go.mod | ||
| go.sum | ||
| main.go | ||
| scan.hcl | ||
README.md
Consul
Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.
- Website: https://www.consul.io
- Tutorials: HashiCorp Learn
- Forum: Discuss
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 - Consul Service Mesh 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 with Transparent Proxy.
-
API Gateway - Consul API Gateway manages access to services within Consul Service Mesh, allow users to define traffic and authorization policies to services deployed within the mesh.
-
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.
-
Dynamic App Configuration - An HTTP API that allows users to store indexed objects within Consul, for storing configuration parameters and application metadata.
Consul runs on Linux, macOS, FreeBSD, Solaris, and Windows and includes an optional browser based UI. 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/collections/consul/get-started-vms
- 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
- Deploy HCP Consul: https://learn.hashicorp.com/tutorials/consul/hcp-gs-deploy
Documentation
Full, comprehensive documentation is available on the Consul website: https://consul.io/docs
Contributing
Thank you for your interest in contributing! Please refer to CONTRIBUTING.md for guidance. For contributions specifically to the browser based UI, please refer to the UI's README.md for guidance.