Syntax | Type | Description | Default |
network | string | Public network name to join, like | |
boolean | Ethereum nodes will be scheduled on different kubernetes nodes |
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string | kubernetes node label key used to distribute ethereum nodes |
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genesis | object | Genesis block configuration | |
array | ethereum node URLs for p2p discovery bootstrap | | |
client | string | ethereum client powering the node | |
coinbase | string | ethereum account to which mining rewards are paid | |
array | domains from which to accept cross origin requests (browser enforced) |
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graphql | boolean | enable GraphQL server |
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number | GraphQL server listening port |
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hosts | array | hostnames to whitelist for RPC access (server enforced) |
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import | object | ethereum account to import for | |
logging | string | node logging verbosity level |
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miner | boolean | node is mining or signing blocks ? | false |
string | name of kubernetes secret holding node private key | | |
p2pPort | string | node p2p port |
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object | node compute and storage resources to alloacte | | |
rpc | boolean | enable HTTP RPC server |
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rpcPort | number | HTTP RPC server listening port |
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rpcAPI | array | services to enable |
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array | set of trusted ethereum nodes to maintain connection to | | |
syncMode | string | blockchain synchronization mode |
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ws | boolean | enable web socket server |
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wsPort | number | web socket server listening port |
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wsAPI | array | services to enable |
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network is the public network name to join, like rinkeby.
network can't be provided in private networks, where .spec.genesis is not null.
network can't be updated (immutable).
highlyAvailable controls if Ethereum nodes will be scheduled on different Kubernetes nodes.
topologyKey is Kubernetes node label key used to distribute ethereum nodes pods on different kubernetes nodes.
bootnodes is ethereum node URLs for p2p network discovery and bootstraping.
bootnodes accepts ethereum node URL enodeURL or a reference to kotal Node in the form of name.namespace where namespace is optional if referenced node is in the same namespace.
Ethereum clients have hardcoded bootnodes for public main and test networks. bootnodes will override these bootnodes.
client is the Ethereum client name powering the node.
client possible values are besu, geth, nethermind, or parity.
Only besu client can be used if network consensus is ibft2.
Only besu can be used in fixed difficulty proof of work networks, where spec.genesis.ethash.fixedDifficulty is not null.
coinbase is ethereum account to which mining rewards are paid.
coinbase is required if the node is mining miner: true.
corsDomains is a list of domains from which to accept cross-origin requests (browser enforced).
Default value * will be used if HTTP RPC server is enabled rpc: true or web socket server is enabled ws: true or graphQL server is enabled graphql: true.
graphql enables the GraphQL server.
Parity (OpenEthereum) client doesn't support GraphQL.
Nethermind client doesn't support GraphQL.
Geth (Go-Ethereum) GraphQL server can be used only if RPC is enabled as of geth v1.9.19 release
graphqlPort GraphQL server listening port.
The default value 8547 will be used if the graphQL server is enabled graphql: true.
hosts is a list of host names to whitelist for RPC access (server enforced).
import is the ethereum account to import. Only for nodes running with geth, nethermind, or parity clients.
During account creation, it will be encrypted with the password, and during import it will be unlocked using the same password.
Nodes that import accounts can't enable HTTP RPC server, web socket server, or GraphQL server to prevent funds drainage if exposed to the internet.
Account must be imported if the node is running with geth, nethermind, or parity clients wants to be a signer or miner.
Syntax | Type | Description |
privatekeySecretName | string | name of the k8s secret holding account private key in hexadecimal (without 0x) in data field called |
passwordSecretName | string | name of the k8s secret holding encryption secret in data field called |
logging is Ethereum node logging verbosity level.
logging possible values are off, fatal, error, warn, debug, info, trace and all.
Different clients support different logging vrbosity levels as shown in the following table:
Logging/Client | Hyperledger Besu | Go Ethereum | Parity (OpenEthereum) | Nethermind |
| ✔️ | ✔️ | ❌ | ❌ |
| ✔️ | ❌ | ❌ | ❌ |
| ✔️ | ✔️ | ✔️ | ✔️ |
| ✔️ | ✔️ | ✔️ | ✔️ |
| ✔️ | ✔️ | ✔️ | ✔️ |
| ✔️ | ✔️ | ✔️ | ✔️ |
| ✔️ | ❌ | ✔️ | ✔️ |
| ✔️ | ✔️ | ❌ | ❌ |
miner enables node mining or signing blocks.
Parity (OpenEthereum) client doesn't support PoW mining.
nodePrivatekeySecretName is the node private key.
nodePrivatekeySecretName is required if the node is a boot node bootnode: true, or if besu node with client: besu is a signer in proof of authority clique network or validator in ibft2 network.
p2pPort is node p2p port for communication (TCP) and discovery (UDP).
resources allocates compute and storage resources to the node.
Syntax | Type | Description | Default |
cpu | string | number of cpu cores this node requires |
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cpuLimit | string | number of cpu cores this node is limited to |
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memory | string | memory this node requires |
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memoryLimit | string | memory this node is limited to |
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storage | string | disk space this node requires |
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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), 1500m, 2, and 4.
cpuLimit can't be less than cpu.
memoryLimit can't be less than memory.
storageClass field is immutable, it cannot be changed after creation.
rpc enables the HTTP RPC server.
rpcPort is the HTTP RPC server listening port.
Default value 8545 will be used if the HTTP RPC server is enabled with rpc: true.
rpcAPI is a list of RPC services to enable.
Default value ["web3", "eth", "net] will be used if HTTP RPC server is enabeld with rpc: true.
staticNodes is a set of trusted ethereum nodes to maintain connection to.
Static nodes are exempt from maximum peer and remote connection limits. Ethereum clients periodically initiating a connection to any unconnected static node.
staticNodes accepts ethereum node URL enodeURL or a reference to kotal Node in the form of name.namespace where namespace is optional if referenced node is in the same namespace.
syncMode is Blockchain synchronization mode.
syncMode possible values are light, full or fast.
Nodes that run with client: besu doesn't support light sync mode.
ws enables the web socket server.
wsPort is the web socket server listening port.
The default value 8546 is used if the web socket server is enabled with ws: true.
wsAPI is a list of rpc services to enable.
the default value ["web3", "eth", "net] will be used if the web socket server is enabeld with ws: true.
genesis is the genesis block configuration.
Genesis block configuration genesis is required in private networks.
Syntax | Type | Description | Default |
chainId | number | used in transaction signature to prevent transactions reply eip155 | |
number | used in network p2p communications | | |
coinbase | string | benefeciary (ethereum address) of mining reward |
|
string | difficulty (hexadecimal number) of the genesis block |
| |
mixHash | string | hash (hexadecimal) combined with nonce to prove effort spent to create block |
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gasLimit | string | total gas limit (hexadecimal number) for all transactions in a block |
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nonce | string | random hexadecimal number used in block computation |
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string | genesis block creation date (hexadecimal) |
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accounts | Array | array of accounts to prefund and store code | |
forks | object | supported forks and corresponding block number | |
ethash | object | Proof of Work consensus configuration | |
clique | object | Proof of Authority consensus configuration | |
ibft2 | object | IBFT2 consensus configuration | |
chainId is the chain id value used in transaction signature to prevent transactions reply eip155
chainId is required.
chainId can't reuse existing public network chain id to avoid transaction replay.
Network | Chain id |
mainnet | 1 |
ropsten | 3 |
rinkeby | 4 |
goerli | 5 |
kotti | 6 |
ethereum classic | 61 |
Mordor | 63 |
development | 2018 |
id is the network id used for p2p communications between network nodes in private networks.
id is required in private networks.
id can't be provided while joining a public network.
id can't be updated (immutable).
coinbase is the beneficiary (ethereum address) of mining reward.
coinbase is optional.
difficulty is the difficulty of the genesis block.
difficulty is optional.
mixHash is combined with the nonce to prove the effort spent to create a block.
mixHash is optional.
gasLimit is the total gas limit for all transactions in a block.
gasLimit is optional.
nonce is a random number used in block computation.
nonce is optional.
timestamp is block creation date.
timestamp is optional.
forks is an object, where the key is fork name and the value is the block number at which to activate this fork.
forks is optional.
if forks is missing, all forks will be activated at block 0 (genesis block) except DAO.
Later forks like muirglacier can't be activated before earlier forks like homestead. They must be ordered as in the following table:
Note that homestead fork will be ignored in PoA Clique consensus network by Parity (OpenEthereum) client.
Syntax | Type | Description |
homestead | number | Homestead fork activation block number |
dao | number | DAO fork activation block number |
eip150 | number | eip150 fork activation block number |
eip155 | number | eip155 fork activation block number |
eip158 | number | eip158 fork activation block number |
byzantium | number | Byzantium fork activation block number |
constantinople | number | Constantipole fork activation block number |
petersburg | number | Petersburg fork activation block number |
istanbul | number | Istanbul fork activation block number |
muirglacier | number | Muir Glacier fork activation block number |
berlin | number | Berlin fork activation block number |
london | number | London fork activation block number |
accounts is an array of accounts to fund or store code.
accounts is optional.
accounts is recommended for networks where signers or validators are not rewarded with eth.
a single account has no defaults.
Syntax | Type | Description |
address | string | ethereum address |
balance | string | account balance in hexadecimal |
code | string | bytecode in hexadecimal |
storage | map | key is the storage location in hexadecimal, and value in hexadecimal is the storage value |
ethash is Proof of Work consensus engine configuration.
ethash is optional.
ethash can be set only in proof of work private networks.
ethash.fixedDifficulty has no default value.
ethash.fixedDifficulty is only supported by Hyperledger Besu Client client: besu
Syntax | Type | Description | Default |
fixedDifficulty | number | fixed difficulty used in block computation | |
clique is Proof of Authority clique consensus engine configuration.
clique is optional.
clique can be set only in proof of authority clique private networks.
At least one signer in clique.signers is required.
Syntax | Type | Description | Default |
blockPeriod | number | block time in seconds | 15 |
epochLength | number | number of blocks after which to reset all votes | 1000 |
signers | Array | array of ethereum addresses | |
ibft2 is IBFT2 engine configuration.
ibft2 is optional.
ibft2 can be set only in IBFT2 private networks.
At least one validator in ibft2.validators is required.
Syntax | Type | Description | Default |
blockPeriod | number | block time in seconds | 15 |
epochLength | number | number of blocks after which to reset all votes | 1000 |
validators | array | array of ethereum addresses | |
requestTimeout | number | timeout for each consensus round in seconds | 10 |
messageQueueLimit | number | message queue limit | 1000 |
duplicateMessageLimit | number | duplicate messages limit | 100 |
futureMessagesLimit | number | future messages buffer limit | 1000 |
futureMessagesMaxDistance | number | maximum height from current chain height for buffering future messages | 10 |