시작하기 스마트 컨트랙트 노드 운영 dApp 개발자

Configuration

This document explains the configurable properties of the node. Klaytn node package ships with good defaults and requires very little configuration. If you changed any settings of a running node, you must restart the node to reflect the changes.

CN 환경설정 파일 위치

  • 컨센서스 노드 환경설정을 위한 kcnd.conf

The configuration file is located in the conf directory, whose default location depends on whether or not the installation is from an archive distribution (tar.gz) or a package distribution (RPM).

  • For the archive distribution, the config directory location defaults to $INSTALL_PATH/kcn-linux-amd64/conf/.

  • For the package distribution, the config directory defaults to /etc/kcnd/conf/.

PN 환경설정 파일 위치

  • 프록시 노드 환경설정을 위한 kpnd.conf

The configuration file is located in the conf directory, whose default location depends on whether or not the installation is from an archive distribution (tar.gz) or a package distribution (RPM).

  • For the archive distribution, the config directory location defaults to $INSTALL_PATH/kpn-linux-amd64/conf/.

  • For the package distribution, the config directory defaults to /etc/kpnd/conf/.

EN Configuration File location

  • 엔드포인트 노드 환경설정을 위한 kend.conf

The configuration file is located in the conf directory, whose default location depends on whether or not the installation is from an archive distribution (tar.gz) or a package distribution (RPM).

  • For the archive distribution, the config directory location defaults to $INSTALL_PATH/ken-linux-amd64/conf/.

  • For the package distribution, the config directory defaults to /etc/kend/conf/.

Configuration File Format

CN과 PN은 설정 파일 형식과 속성이 동일합니다.

다음은 CN의 설정 파일 샘플로, cypress네트워크에 참여하고 블록체인 데이터를 기본 설정 위치에 저장하게 되어 있습니다. 이때 기본으로 설정된 블록체인 데이터 저장 위치는 아카이브 배포의 경우 ~/kcnd_home, 패키지 배포의 경우 /var/kcnd/data입니다.

# Configuration file for the kcnd

# cypress, baobab is only available if you don't specify NETWORK_ID.
NETWORK = "cypress"
# NETWORK_ID를 명시하면 프라이빗 네트워크가 생성됩니다.
NETWORK_ID=
PORT=32323
SERVER_TYPE="fasthttp"
SYNCMODE="full"
VERBOSITY=3
MAXCONNECTIONS=100
# LDBCACHESIZE=10240
REWARDBASE="0x0"

...

DATA_DIR=
LOG_DIR=$DATA_DIR/logs

아래와 같이 CN의 txpool 크기를 권장합니다.

TXPOOL_EXEC_SLOTS_ALL=16384
TXPOOL_NONEXEC_SLOTS_ALL=16384
TXPOOL_EXEC_SLOTS_ACCOUNT=16384
TXPOOL_NONEXEC_SLOTS_ACCOUNT=16384

아래와 같이 PN의 txpool 크기를 권장합니다.

TXPOOL_EXEC_SLOTS_ALL=8192
TXPOOL_NONEXEC_SLOTS_ALL=8192
TXPOOL_EXEC_SLOTS_ACCOUNT=8192
TXPOOL_NONEXEC_SLOTS_ACCOUNT=8192

아래와 같이 EN의 txpool 크기를 권장합니다.

TXPOOL_EXEC_SLOTS_ALL=4096
TXPOOL_NONEXEC_SLOTS_ALL=4096
TXPOOL_EXEC_SLOTS_ACCOUNT=4096
TXPOOL_NONEXEC_SLOTS_ACCOUNT=4096

Properties

The configuration file has the following configurable properties. CN과 PN 설정 파일은 REWARDBASE를 제외하고는 동일한 속성을 갖습니다.

NameDescription

NETWORK

Network name that this node will join. This value is used when NETWORK_ID is not defined. ("cypress", "baobab")

NETWORK_ID

Klaytn network ID. If you create a local private network, you will define the network ID for your own. Following IDs are reserved for pre-configured networks. 8217 : Cypress (Main network) 1000 : Aspen test network 1001 : Baobab test network

PORT

P2P port. (Default: "32323")

SERVER_TYPE

JSON RPC server type. ("http", "fasthttp")

SYNCMODE

Blockchain sync mode. ("fast", "full")

VERBOSITY

Logging verbosity. (0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail)

MAXCONNECTIONS

Maximum number of physical connections. All single-channel peers can have up to MAXCONNECTIONS peers. All multi-channel peers can have up to MAXCONNECTIONS/2 peers. Network connection is disabled if it is set to 0. (Default: 10)

LDBCACHESIZE

Size of in-memory cache in LevelDB (MiB). (Default : 768)

REWARDBASE

Account address that will receive block consensus rewards. This property only applies to CN.

TXPOOL_EXEC_SLOTS_ALL

Maximum number of executable transaction slots for all accounts. (Default: 4096)

TXPOOL_NONEXEC_SLOTS_ALL

Maximum number of non-executable transaction slots for all accounts. (Default: 1024)

TXPOOL_EXEC_SLOTS_ACCOUNT

Number of executable transaction slots guaranteed per account. (Default: 16)

TXPOOL_NONEXEC_SLOTS_ACCOUNT

Maximum number of non-executable transaction slots guaranteed per account. (Default: 64)

TXPOOL_LIFE_TIME

Maximum amount of time non-executable transactions is queued. (Default : 5m)

RPC_ENABLE

Enable the HTTP-RPC server if it is set to 1.

RPC_API

Comma-separated list of APIs offered over the HTTP-RPC interface. (admin, debug, klay, miner, net, personal, rpc, txpool, web3)

RPC_PORT

HTTP-RPC server listening port. (Default: "8551")

RPC_ADDR

HTTP-RPC server listening interface. (Default: "localhost")

RPC_CORSDOMAIN

Comma-separated list of domains from which to accept cross-origin requests (browser enforced)

RPC_VHOSTS

Comma-separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (Default: {"localhost"})

WS_ENABLE

Enable the WS-RPC server if it is set to 1.

WS_API

APIs offered over the WS-RPC interface. (admin, debug, klay, miner, net, personal, rpc, txpool, web3)

WS_ADDR

WS-RPC server listening interface.

WS_PORT

WS-RPC server listening port. (Default : "8552")

WS_ORIGINS

Origins from which to accept websockets requests. (Default: "localhost")

AUTO_RESTART

1로 설정되었을 경우 autorestart.timeout (e.g., 60s, 10m, 1h) 동안 현재 블록이 업데이트되지 않았다면 프로세스를 재시작합니다.

METRICS

Enable metrics collection and reporting if it is set to 1.

PROMETHEUS

Enable prometheus exporter if it is set to 1.

DB_NO_PARALLEL_WRITE

Disable parallel writes of block data to persistent database if it is set to 1.

MULTICHANNEL

Create a dedicated channel for block propagation if it is set to 1.

SUBPORT

Listening sub port number if multichannel option is enabled. (Default : "32324")

NO_DISCOVER

Turn off the discovery option if it is set to 1.

BOOTNODES

Comma-separated kni addresses of bootstrap nodes.

ADDITIONAL

For additional command-line options. e.g) --txpool.nolocals

DATA_DIR

Klaytn blockchain data folder path.

LOG_DIR

Log folder path.

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