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constellation/joinservice
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Otto Bittner 8f21972aec
attestation: add awsSEVSNP as new variant (#1900) 
* variant: move into internal/attestation
* attesation: move aws attesation into subfolder nitrotpm
* config: add aws-sev-snp variant
* cli: add tf option to enable AWS SNP

For now the implementations in aws/nitrotpm and aws/snp
are identical. They both contain the aws/nitrotpm impl.
A separate commit will add the actual attestation logic.
2023-06-09 15:41:02 +02:00
..
cmd attestation: add awsSEVSNP as new variant (#1900) 2023-06-09 15:41:02 +02:00
internal deps: update K8s dependencies (#1599) 2023-05-24 18:57:45 +02:00
joinproto deps: update module github.com/sigstore/rekor to v1.1.1 [SECURITY] (#1729) 2023-05-11 17:23:17 +02:00
README.md bazel: remove apko and Dockerfile where Bazel is used to build container images 2023-04-18 15:35:15 +02:00

README.md

Join Service

Implementation for Constellation's node flow to join an existing cluster.

The join service runs on each control-plane node of the Kubernetes cluster. New nodes (at cluster start, or later through autoscaling) send an IssueJoinTicket request to the service over aTLS. The join service verifies the new nodes certificate and attestation statement. If attestation is successful, the new node is supplied with a disk encryption key for its state disk, and a Kubernetes bootstrap token, so it may join the cluster.

Packages

joinproto

Proto definitions for the join service.

internal/server

The server implements gRPC endpoints for joining the cluster and holds the main application logic.

Connections between the join service and joining nodes are secured using aTLS

sequenceDiagram
    participant New Node
    participant Join Service
    New Node-->>Join Service: aTLS Handshake (server side verification)
    Join Service-->>New Node: #
    New Node->>+Join Service: grpc::IssueJoinTicket(DiskUUID, NodeName, IsControlPlane)
    Join Service->>+KMS: grpc::GetDataKey(DiskUUID)
    KMS->>-Join Service: DiskEncryptionKey
    Join Service->>-New Node: [DiskEncryptionKey, KubernetesJoinToken, ...]

internal/kms

Implements interaction with Constellation's keyservice. This is needed for fetching data encryption keys for joining nodes.

internal/kubeadm

Implements interaction with the Kubernetes API to create join tokens for new nodes.

Docker image

Build the image:

bazel build //joinservice/cmd:joinservice
bazel build //bazel/release:joinservice_sum
bazel build //bazel/release:joinservice_tar
bazel run //bazel/release:joinservice_push