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feat(anchor): expose Anchor Prometheus metrics on port 5164 #46

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Merged
ovidiu-ssv-labs merged 1 commit into from
Aug 11, 2026
Merged

feat(anchor): expose Anchor Prometheus metrics on port 5164 #46

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16 changes: 16 additions & 0 deletions nodes/anchor/node.star
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Original file line number Diff line number Diff line change
@@ -1,6 +1,9 @@
constants = import_module("../../utils/constants.star")
utils = import_module("../../utils/utils.star")

ANCHOR_METRICS_PORT_NAME = "metrics"
ANCHOR_METRICS_PORT = 5164

# Start anchor nodes: first node starts alone (to get ENR), remaining start in parallel
def start(plan, num_nodes, cl_url, el_rpc, el_ws, key_pems, config, image):
IP_PLACEHOLDER = "KURTOSIS_IP_ADDR_PLACEHOLDER"
Expand All @@ -15,8 +18,19 @@ def start(plan, num_nodes, cl_url, el_rpc, el_ws, key_pems, config, image):
"--logfile-max-number", "0", "--debug-level", "debug",
# mitigation of https://github.com/sigp/anchor/issues/765
"--subscribe-all-subnets",
# Prometheus metrics; anchor defaults the listen address to 127.0.0.1, which is unreachable
# from outside the container, so bind 0.0.0.0 for the published port to work.
"--metrics", "--metrics-address", "0.0.0.0", "--metrics-port", str(ANCHOR_METRICS_PORT),
]

metrics_ports = {
ANCHOR_METRICS_PORT_NAME: PortSpec(
number=ANCHOR_METRICS_PORT,
transport_protocol="TCP",
application_protocol="http",
),
}

plan.add_service(
name="anchor-node-0",
description="Starting Anchor bootnode (node 0)",
Expand All @@ -25,6 +39,7 @@ def start(plan, num_nodes, cl_url, el_rpc, el_ws, key_pems, config, image):
entrypoint=["anchor"],
cmd=command_arr,
files=files,
ports=metrics_ports,
private_ip_address_placeholder=IP_PLACEHOLDER,
ready_conditions=ReadyCondition(
recipe=ExecRecipe(
Expand Down Expand Up @@ -54,6 +69,7 @@ def start(plan, num_nodes, cl_url, el_rpc, el_ws, key_pems, config, image):
entrypoint=["anchor"],
cmd=command_arr_with_boot,
files=files,
ports=metrics_ports,
private_ip_address_placeholder=IP_PLACEHOLDER,
)
plan.add_services(remaining_configs, description="Starting {} remaining Anchor nodes in parallel".format(num_nodes - 1))
Expand Down