在Aggregator中有如下配置，需要配置Sequencer的私钥

[Aggregator.SequencerPrivateKey]
Path = "/etc/cdk/sequencer.keystore"
Password = "password"

查看链代码

if !cfg.SyncModeOnlyEnabled && cfg.SettlementBackend == AggLayer {
        aggLayerClient = agglayer.NewAggLayerClient(cfg.AggLayerURL)

        sequencerPrivateKey, err = cdkcommon.NewKeyFromKeystore(cfg.SequencerPrivateKey)
        if err != nil {
            return nil, err
        }
    }

以下条件时被设置

1. cfg.SyncModeOnlyEnabled == false
2. cfg.SettlementBackend == AggLayer

查看SequencerPrivateKey使用逻辑

func (a *Aggregator) settleWithAggLayer(
    ctx context.Context,
    proof *state.Proof,
    inputs ethmanTypes.FinalProofInputs) bool {
    proofStrNo0x := strings.TrimPrefix(inputs.FinalProof.Proof, "0x")
    proofBytes := common.Hex2Bytes(proofStrNo0x)
    tx := agglayer.Tx{
        LastVerifiedBatch: cdkTypes.ArgUint64(proof.BatchNumber - 1),
        NewVerifiedBatch:  cdkTypes.ArgUint64(proof.BatchNumberFinal),
        ZKP: agglayer.ZKP{
            NewStateRoot:     common.BytesToHash(inputs.NewStateRoot),
            NewLocalExitRoot: common.BytesToHash(inputs.NewLocalExitRoot),
            Proof:            cdkTypes.ArgBytes(proofBytes),
        },
        RollupID: a.etherman.GetRollupId(),
    }
    signedTx, err := tx.Sign(a.sequencerPrivateKey)
    if err != nil {
        a.logger.Errorf("failed to sign tx: %v", err)
        a.handleFailureToAddVerifyBatchToBeMonitored(ctx, proof)

        return false
    }

switch a.cfg.SettlementBackend {
            case AggLayer:
                if success := a.settleWithAggLayer(ctx, proof, inputs); !success {
                    continue
                }
            default:
                if success := a.settleDirect(ctx, proof, inputs); !success {
                    continue
                }
            }

SettlementBackend 配置选项

• agglayer
• l1 (默认)

总结
当使用agglayer结算时，才需要设置SequencerPrivateKey，所以独立部署时Aggregator不需要配置Aggregator.SequencerPrivateKey