feat: split nimbus CL-validator (#404)

.github/tests/split-nimbus.yaml

+participants:
+  - el_client_type: geth
+    cl_client_type: nimbus
+    cl_split_mode_enabled: true
+    validator_count: 0
+  - el_client_type: nethermind
+    cl_client_type: nimbus
+    cl_split_mode_enabled: true
+  - el_client_type: erigon
+    cl_client_type: nimbus
+    cl_split_mode_enabled: true
+  - el_client_type: besu
+    cl_client_type: nimbus
+    cl_split_mode_enabled: true
+  - el_client_type: reth
+    cl_client_type: nimbus
+    cl_split_mode_enabled: true
+  - el_client_type: ethereumjs
+    cl_client_type: nimbus
+    cl_split_mode_enabled: true
+additional_services: []

README.md

@@ -147,6 +147,11 @@ participants:
   # over a specific participant's logging
   cl_client_log_level: ""
 
+  # A list of optional extra params that will be passed to the CL to run separate Beacon and validator nodes
+  # Only possible for nimbus or teku (coming soon)
+  # Defaults to false
+  cl_split_mode_enabled: false
+
   # A list of optional extra params that will be passed to the CL client Beacon container for modifying its behaviour
   # If the client combines the Beacon & validator nodes (e.g. Teku, Nimbus), then this list will be passed to the combined Beacon-validator node
   beacon_extra_params: []

src/cl/lighthouse/lighthouse_launcher.star

@@ -121,6 +121,7 @@ def launch(
     extra_validator_params,
     extra_beacon_labels,
     extra_validator_labels,
+    split_mode_enabled=False,
 ):
     beacon_node_service_name = "{0}".format(service_name)
     validator_node_service_name = "{0}-{1}".format(

src/cl/lodestar/lodestar_launcher.star

@@ -97,6 +97,7 @@ def launch(
     extra_validator_params,
     extra_beacon_labels,
     extra_validator_labels,
+    split_mode_enabled=False,
 ):
     beacon_node_service_name = "{0}".format(service_name)
     validator_node_service_name = "{0}-{1}".format(

src/cl/prysm/prysm_launcher.star

@@ -109,6 +109,7 @@ def launch(
     extra_validator_params,
     extra_beacon_labels,
     extra_validator_labels,
+    split_mode_enabled=False,
 ):
     split_images = images.split(IMAGE_SEPARATOR_DELIMITER)
     if len(split_images) != EXPECTED_NUM_IMAGES:

src/cl/teku/teku_launcher.star

@@ -98,6 +98,7 @@ def launch(
     extra_validator_params,
     extra_beacon_labels,
     extra_validator_labels,
+    split_mode_enabled,
 ):
     log_level = input_parser.get_client_log_level_or_default(
         participant_log_level, global_log_level, TEKU_LOG_LEVELS

src/package_io/input_parser.star

@@ -16,7 +16,7 @@ DEFAULT_EL_IMAGES = {
 DEFAULT_CL_IMAGES = {
     "lighthouse": "sigp/lighthouse:latest",
     "teku": "consensys/teku:latest",
-    "nimbus": "statusim/nimbus-eth2:multiarch-latest",
+    "nimbus": "ethpandaops/nimbus:unstable",
     "prysm": "prysmaticlabs/prysm-beacon-chain:latest,prysmaticlabs/prysm-validator:latest",
     "lodestar": "chainsafe/lodestar:latest",
 }
@@ -125,6 +125,7 @@ def input_parser(plan, input_args):
                 cl_client_type=participant["cl_client_type"],
                 cl_client_image=participant["cl_client_image"],
                 cl_client_log_level=participant["cl_client_log_level"],
+                cl_split_mode_enabled=participant["cl_split_mode_enabled"],
                 beacon_extra_params=participant["beacon_extra_params"],
                 beacon_extra_labels=participant["beacon_extra_labels"],
                 validator_extra_params=participant["validator_extra_params"],
@@ -252,6 +253,17 @@ def parse_network_params(input_args):
             result["network_params"]["seconds_per_slot"] < 12
         ):
             fail("nimbus can't be run with slot times below 12 seconds")
+
+        if participant["cl_split_mode_enabled"] and cl_client_type not in (
+            "nimbus",
+            "teku",
+        ):
+            fail(
+                "split mode is only supported for nimbus and teku clients, but you specified {0}".format(
+                    cl_client_type
+                )
+            )
+
         el_image = participant["el_client_image"]
         if el_image == "":
             default_image = DEFAULT_EL_IMAGES.get(el_client_type, "")
@@ -421,6 +433,7 @@ def default_participant():
         "cl_client_type": "lighthouse",
         "cl_client_image": "",
         "cl_client_log_level": "",
+        "cl_split_mode_enabled": False,
         "beacon_extra_params": [],
         "beacon_extra_labels": {},
         "validator_extra_params": [],

src/participant_network.star

@@ -340,6 +340,7 @@ def launch_participant_network(
                 participant.validator_extra_params,
                 participant.beacon_extra_labels,
                 participant.validator_extra_labels,
+                participant.cl_split_mode_enabled,
             )
         else:
             boot_cl_client_ctx = all_cl_client_contexts
@@ -369,6 +370,7 @@ def launch_participant_network(
                 participant.validator_extra_params,
                 participant.beacon_extra_labels,
                 participant.validator_extra_labels,
+                participant.cl_split_mode_enabled,
             )
 
         # Add participant cl additional prometheus labels