Ethereum 2.0

BeaconNode

Syntax	Type	Description	Default
network	string	Network to join
client	string	Ethereum 2.0 client to use
eth1Endpoints	array	Ethereum 1 JSON RPC endpoints
hosts	array	hostnames to whitelist for RPC access	*
corsDomains	array	domains from which to accept cross origin requests	*
rest	bool	Enable REST API server	false
restHost	string	REST API server host	0.0.0.0
restPort	number	REST API server port	5051
rpc	bool	Enables JSON RPC server	false
rpcHost	string	JSON RPC server host	0.0.0.0
rpcPort	number	JSON RPC server port	4000
grpc	bool	GRPC gateway server	false
grpcHost	string	GRPC gateway server host	0.0.0.0
grpcPort	number	GRPC gateway server port	3500
p2pPort	number	p2p and discovery port	9000
certSecretName	string	k8s secret name that holds tls.key and tls.crt
logging	string	logging verbosity level	info
resources	object	Node compute and storage resources

network

network is Ethereum 2.0 network to join and sync its beacon chain.

client

client is the Ethereum 2.0 client to use.

client possible values are teku,prysm,lighthouse, and nimbus.

eth1Endpoints

eth1Endpoints is array of Ethereum 1 JSON RPC endpoints.

prysm, teku, and lighthouse clients support multiple endpoints in eth1Endpoints.

nimbus client supports only 1 endpoint in eth1Endpoints.

hosts

hosts is a list of host names to whitelist for RPC access (server enforced).

corsDomains

corsDomains is a list of domains from which to accept cross-origin requests (browser enforced).

rest

rest enables REST API server.

REST API server is only supported by teku and lighthouse.

restHost

restHost is the REST API server host.

restPort

restPort is the REST API server port.

rpc

rpc enables JSON RPC server.

JSON RPC server is only supported by nimbus and prysm.

rpcHost

rpcHost is the JSON RPC server host.

rpcPort

rpcPort is the JSON RPC server port.

grpc

grpc enables GRPC gateway server.

GRPC gateway is only supported by prysm client.

grpcHost

grpcHost is the GRPC gateway server host.

grpcPort

grpcPort is the GRPC gateway server port.

p2pPort

p2pPort is the p2p and discovery port.

certSecretName

certSecretName is k8s secret name that holds TLS private key in data field called tls.key and TLS certificate in data field called tls.crt.

certSecretName is supported only by prysm client.

logging

logging is logging verbosity level.

Different levels are supported by different Ethereum 2.0 beacon node clients.

Logging/Client	Teku	Lighthouse	Prysm	Nimbus
off	✔️	❌	❌	❌
fatal	✔️	❌	✔️	✔️
none	❌	❌	❌	✔️
notice	❌	❌	❌	✔️
error	✔️	✔️	✔️	✔️
warn	✔️	✔️	✔️	✔️
info	✔️	✔️	✔️	✔️
debug	✔️	✔️	✔️	✔️
trace	✔️	❌	✔️	✔️
all	✔️	❌	❌	❌
critical	❌	✔️	❌	❌
panic	❌	❌	✔️	❌

resources

resources allocates compute and storage resources to the node.

resources object has the following fields:

Syntax	Type	Description	Defalt
cpu	string	number of cpu cores this node requires	4
cpuLimit	string	number of cpu cores this node is limited to	8
memory	string	memory this node requires	8Gi
memoryLimit	string	memory this node is limited to	16Gi
storage	string	disk space this node requires	200Gi
storageClass	string	Node volume storage class	Cluster's default storage class will be used as defined by cluster admin or cloud provider

memory and storage requests and limits must use the pattern ^[1-9][0-9]*[KMGTPE]i$ for example 1500Mi, 30Gi, and 1Ti.

cpu requests and limits must use the pattern ^[1-9][0-9]*m?$ for example 1000m (which is equal to 1 core), 1500m which is 1.5 core, 2 cores, and 4 cores.

cpuLimit can't be less than cpu.

memoryLimit can't be less than or equal to memory.

storageClass field is immutable, it cannot be changed after creation.

Validator

Syntax	Type	Description	Default
network	string	Network to validate blocks for
client	string	Ethereum 2.0 client to use
beaconEndpoints	array	List of beacon node endpoints
certSecretName	string	k8s secret name that holds tls.crt
graffiti	string	Text to include in proposed blocks	Powered by Kotal
walletPasswordSecretName	string	Wallet password kubernetes secret
keystores	array	Validator keystores
logging	string	logging verbosity level	info
resources	object	Validator compute and storage resources

network

network is the Network to validate blocks for.

client

client is the Ethereum 2.0 client to use.

beaconEndpoints

beaconEndpoints is a list of beacon node endpoints.

lighthouse is the only client that supports multiple endpoints. All other clients supports only a single endpoint.

certSecretName

certSecretName is k8s secret name that holds TLS certificate in data field called tls.crt.

certSecretName is supported only by prysm client.

graffiti

graffiti is the text to include in proposed blocks.

walletPasswordSecretName

walletPasswordSecretName is prysm wallet password kubernetes secret.

walletPasswordSecretName is supported only by prysm client.

Wallet password secret must be deployed before deploying the validator.

Wallet password secret must contain the password in key named password.

# create k8s secret from password value
kubectl create secret wallet-password --from-literal=password=<actual-password>
# create k8s secret from password file
kubectl create secret wallet-password --from-file=password=<password-file-path>

keystores

keystores is array of keystore objects.

Syntax	Type	Description
secretName	string	kubernetes secret name holding keystore and password
publicKey	string	Validator public key in hexadecimal

Validator keystore public key is required in case of client: lighthouse

Keystore secret must be deployed before deploying the validator.

Keystore secret must contain the BLS12-381 keystore JSON file in data field key called keystore key, and password in password key.

# create k8s secret from keystore and password file
kubectl create secret my-validator --from-file=keystore=/path/to/keystore.json --from-file=password=/path/to/password.txt

logging

logging is logging verbosity level.

Different levels are supported by different Ethereum 2.0 beacon node clients.

Teku validator client doesn't support logging. Verbosity level will be ignored 🙈

Logging/Client	Lighthouse	Prysm	Nimbus
off	❌	❌	❌
fatal	❌	✔️	✔️
none	❌	❌	✔️
notice	❌	❌	✔️
error	✔️	✔️	✔️
warn	✔️	✔️	✔️
info	✔️	✔️	✔️
debug	✔️	✔️	✔️
trace	❌	✔️	✔️
all	❌	❌	❌
critical	✔️	❌	❌
panic	❌	✔️	❌

resources

resources allocates compute and storage resources to the node.

resources object has the following fields:

Syntax	Type	Description	Defalt
cpu	string	number of cpu cores this node requires	4
cpuLimit	string	number of cpu cores this node is limited to	8
memory	string	memory this node requires	8Gi
memoryLimit	string	memory this node is limited to	16Gi
storage	string	disk space this node requires	200Gi

memory and storage requests and limits must use the pattern ^[1-9][0-9]*[KMGTPE]i$ for example 1500Mi, 30Gi, and 1Ti.

cpu requests and limits must use the pattern ^[1-9][0-9]*m?$ for example 1000m (which is equal to 1 core), 1500m which is 1.5 core, 2 cores, and 4 cores.

cpuLimit can't be less than cpu.

memoryLimit can't be less than or equal to memory.