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State sync

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State synchronization enables a new node to seamlessly integrate into the network by retrieving a snapshot of the application state at a recent height, rather than fetching and replaying all historical blocks. Given that the application state is typically more compact than the blocks themselves, and the restoration process is significantly quicker than block replay, this method can drastically diminish the network synchronization duration from days to mere minutes.

Instructionsโ€‹

Stop the service and reset the dataโ€‹

sudo systemctl stop sedad
cp $HOME/.sedad/data/priv_validator_state.json $HOME/.sedad/priv_validator_state.json.backup
sedad tendermint unsafe-reset-all --keep-addr-book --home $HOME/.sedad

Get and configure the state sync informationโ€‹

STATE_SYNC_RPC=https://seda-1-testnet-rpc.owlstake.com:443
STATE_SYNC_PEER=d5519e378247dfb61dfe90652d1fe3e2b3005a5b@65.109.68.190:17356
LATEST_HEIGHT=$(curl -s $STATE_SYNC_RPC/block | jq -r .result.block.header.height)
SYNC_BLOCK_HEIGHT=$(($LATEST_HEIGHT - 1000))
SYNC_BLOCK_HASH=$(curl -s "$STATE_SYNC_RPC/block?height=$SYNC_BLOCK_HEIGHT" | jq -r .result.block_id.hash)

sed -i \
  -e "s|^enable *=.*|enable = true|" \
  -e "s|^rpc_servers *=.*|rpc_servers = \"$STATE_SYNC_RPC,$STATE_SYNC_RPC\"|" \
  -e "s|^trust_height *=.*|trust_height = $SYNC_BLOCK_HEIGHT|" \
  -e "s|^trust_hash *=.*|trust_hash = \"$SYNC_BLOCK_HASH\"|" \
  -e "s|^persistent_peers *=.*|persistent_peers = \"$STATE_SYNC_PEER\"|" \
  $HOME/.sedad/config/config.toml

mv $HOME/.sedad/priv_validator_state.json.backup $HOME/.sedad/data/priv_validator_state.json

Download latest wasmโ€‹

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Currently state sync does not support copy of the wasm folder. Therefore, you will have to download it manually.

curl -L https://snapshots.owlstake.com/seda-1-testnet/wasm_latest.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.sedad

Restart the service and check the logโ€‹

sudo systemctl start sedad && sudo journalctl -u sedad -f --no-hostname -o cat