consul

Commit Graph

Author	SHA1	Message	Date
Mitchell Hashimoto	f76022fa63	CA Provider Plugins (#4751 ) This adds the `agent/connect/ca/plugin` library for consuming/serving Connect CA providers as [go-plugin](https://github.com/hashicorp/go-plugin) plugins. This does not wire this up in any way to Consul itself, so this will not enable using these plugins yet. ## Why? We want to enable CA providers to be pluggable without modifying Consul so that any CA or PKI system can potentially back the Connect certificates. This CA system may also be used in the future for easier bootstrapping and internal cluster security. ### go-plugin The benefit of `go-plugin` is that for the plugin consumer, the fact that the interface implementation is communicating over multi-process RPC is invisible. Internals of Consul will continue to just use `ca.Provider` interface implementations as if they're local. For plugin _authors_, they simply have to implement the interface. The network/transport/process management issues are handled by go-plugin itself. The CA provider plugins support both `net/rpc` and gRPC transports. This enables easy authoring in any language. go-plugin handles the actual protocol handshake and connection. This is just a feature of go-plugin. `go-plugin` is already in production use for years by Packer, Terraform, Nomad, Vault, and Sentinel. We've shown stability for both desktop and server-side software. It is very mature. ## Implementation Details ### `map[string]interface{}` The `Configure` method passes a `map[string]interface{}`. This map contains only Go primitives and containers of primitives (no funcs, chans, etc.). For `net/rpc` we encode as-is using Gob. For gRPC we marshal to JSON and transmit as a `bytes` type. This is the same approach we take with Vault and other software. Note that this is just the transport protocol, the end software views it fully decoded. ### `x509.Certificate` and `CertificateRequest` We transmit the raw ASN.1 bytes and decode on the other side. Unit tests are verifying we get the same cert/csrs across the wire. ### Testing `go-plugin` exposes test helpers that enable testing the full plugin RPC over real loopback network connections. We test all endpoints for success and error for both `net/rpc` and gRPC. ### Vendoring This PR doesn't introduce vendoring for two reasons: 1. @banks's `f-envoy` branch introduces a lot of these and I didn't want conflict. 2. The library isn't actually used yet so it doesn't introduce compile-time errors (it does introduce test errors). ## Next Steps With this in place, we need to figure out the proper way to actually hook these up to Consul, load them, etc. This discussion can happen elsewhere, since regardless of approach this plugin library implementation is the exact same.	6 years ago
Kyle Havlovitz	57deb28ade	connect/ca: tighten up the intermediate signing verification	6 years ago
Kyle Havlovitz	2919519665	connect/ca: add intermediate functions to Vault ca provider	6 years ago
Kyle Havlovitz	52e8652ac5	connect/ca: add intermediate functions to Consul CA provider	6 years ago
Kyle Havlovitz	546bdf8663	connect/ca: add Configure/GenerateRoot to provider interface	6 years ago
Kyle Havlovitz	050da22473	connect/ca: undo the interface changes and use sign-self-issued in Vault	7 years ago
Kyle Havlovitz	8a70ea64a6	connect/ca: update Vault provider to add cross-signing methods	7 years ago
Paul Banks	e514570dfa	Actually return Intermediate certificates bundled with a leaf!	7 years ago
Kyle Havlovitz	5683d628c4	Support giving the duration as a string in CA config	7 years ago
Kyle Havlovitz	e00088e8ee	Rename some of the CA structs/files	7 years ago

10 Commits (d92577c16b2e0d5df3d18779508dbde87c38e35a)