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Configure IPv6

Tempo can be configured to communicate between the components using Internet Protocol Version 6, or IPv6.

Note

The underlying infrastructure must support this address family. This configuration may be used in a single-stack IPv6 environment, or in a dual-stack environment where both IPv6 and IPv4 are present. In a dual-stack scenario, only one address family may be configured at a time, and all components must be configured for that address family.

Protocol configuration

This sample listen configuration will allow the gRPC and HTTP servers to listen on IPv6, and configure the various memberlist components to enable IPv6.

yaml 
memberlist:
  bind_addr:
    - '::'
  bind_port: 7946

compactor:
  ring:
    kvstore:
      store: memberlist
    enable_inet6: true

metrics_generator:
  ring:
    enable_inet6: true

ingester:
  lifecycler:
    address: '::'
    enable_inet6: true

server:
  grpc_listen_address: '::0'
  grpc_listen_port: 9095
  http_listen_address: '::0'
  http_listen_port: 3200

Kubernetes service configuration

Each service fronting the workloads will need to be configured with with spec.ipFamilies and spec.ipFamilyPolicy set. See this compactor example.

yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    name: compactor
  name: compactor
  namespace: trace
spec:
  clusterIP: fccb::31a7
  clusterIPs:
    - fccb::31a7
  internalTrafficPolicy: Cluster
  ipFamilies:
    - IPv6
  ipFamilyPolicy: SingleStack
  ports:
    - name: compactor-http-metrics
      port: 3200
      protocol: TCP
      targetPort: 3200
  selector:
    app: compactor
    name: compactor
  sessionAffinity: None
  type: ClusterIP

You can check the listening service from within a pod.

sh 
❯ k exec -it compactor-55c778b8d9-2kch2 -- sh
/ # apk add iproute2
OK: 12 MiB in 27 packages
/ # ss -ltn -f inet
State   Recv-Q   Send-Q     Local Address:Port     Peer Address:Port  Process
/ # ss -ltn -f inet6
State    Recv-Q   Send-Q     Local Address:Port     Peer Address:Port  Process
LISTEN   0        4096                   *:7946                *:*
LISTEN   0        4096                   *:9095                *:*
LISTEN   0        4096                   *:3200                *:*

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