Replay With speedctl

speedctl gives you the options of running a replay locally or against deployment in a cluster.

Replay in a Cluster

Either it's a the same cluster that you caputured the traffic or it's another cluster, you need to have an active inspector in your cluster. By running:

speedctl infra replay {workload_name} --snapshot-id {snapshot_id} --cluster {cluster_name}

It will run a replay agains your workload in the specified cluster. To see more details run speedctl infra replay --help.

Additionally, cluster replays can be initiated in a way that maps requests to be sent to specific targets. For example, a snapshot containing traffic that will be replayed to services A, B, and C can have some or all of that traffic sent to a different endpoint. This might be useful in instances where all three services need to be tested as one collective unit, but you are interested in testing the entire sub-system when sending traffic to a newer version of one of the services. For these cases, you can use the --test-against flag:

speedctl infra replay --test-against original:80=new-service:8888 --snapshot-id {snapshot_id} --cluster {cluster_name}

Note: using this flag is mutually exclusive from specifying {workload_name}.

Replay locally

See the full guild in cli page.