OKC Testnet

This repo collects the genesis, snapshot data and configuration files for the various OKC testnets. It exists so the OKC repo does not get bogged down with large genesis files and status updates.

1. Download the most recent testnet snapshot

There are 3 types of snapshots and s0 is the one with minimum data size:

• s0: the most recent block and world state
• s1: all historical blocks and the most recent world state
• s3: all historical blocks and world states

Download URL:

• Download and uncompress the snapshot to exchaind directory

export EXCHAIND_PATH=~/.exchaind
rm -rf ${EXCHAIND_PATH}/data
cd ${EXCHAIND_PATH}
wget -c testnet-s0-yyyy-mm-dd-height-rocksdb.tar.gz
tar -zxvf testnet-s0-yyyy-mm-dd-height-rocksdb.tar.gz

• Check the snapshot by ls -l ~/.exchaind/data

total 140
drwxr-xr-x 2 root root 131072 Apr 12 09:14 application.db
drwxr-xr-x 2 root root   4096 Apr 12 09:14 blockstore.db
-rw------- 1 root root     49 Apr 12 09:17 priv_validator_state.json
drwxr-xr-x 2 root root   4096 Apr 12 09:14 state.db

2. Start with the snapshot

2 ways to startup an exchain full node:

• start with a docker image
• start with the exchaind binary

2.1. Start testnet with a docker image

• download the docker image

docker pull okexchain/fullnode-testnet:latest

• run docker based the snapshot downloaded in the previous step Start based on snapshot.

docker run -d --name exchain-testnet-fullnode -v ~/.exchaind/data:/root/.exchaind/data/ -p 8545:8545 -p 26656:26656 okexchain/fullnode-testnet:latest

• view the running log

docker logs --tail 100 -f exchain-testnet-fullnode

You can stop the docker container with command: docker rm -f exchain-testnet-fullnode When the docker container gets to the latest block, local RPC can be used：http://localhost:8545

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2.2. Or start testnet with the exchaind binary

• Build exchaind by the latest released version

make testnet # default is rocksdb, you may need to execute "make rocksdb" first
make testnet WITH_ROCKSDB=false # if use leveldb

• Initialize exchain node configurations (skip this step if you did it before)

exchaind init your_custom_moniker --chain-id exchain-65 --home ~/.exchaind

• Start exchaind

exchaind start --chain-id exchain-65 --home ~/.exchaind