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Free Up Space with State Sync

State Sync helps you free up space on your hard disk and should be performed regularly. You are encouraged to set up a monitoring structure to check when it is time to free up space.

We assume you have Cosmovisor installed, if you do not have it, follow the related module.

Create State Sync script file​

If you still don't have it, create the file state-sync.sh

sudo nano state-sync.sh

Add the following code in it (to add your own or favourite RPC check this list here):

#!/bin/bash

SNAP_RPC="https://rpc.sentinel.co:443"
SNAP_RPC2="https://rpc-sentinel.whispernode.com:443"

LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 1000)); \
TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)

sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC,$SNAP_RPC2\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"|" $HOME/.sentinelhub/config/config.toml

mv $HOME/.sentinelhub/data $HOME/.sentinelhub/data-old
mkdir -p $HOME/.sentinelhub/data
cp $HOME/.sentinelhub/data-old/priv_validator_state.json $HOME/.sentinelhub/data

This script ensures that the new synchronization process starts from a point slightly before the absolute latest block. This provides a margin of safety and avoid potential synchronization issues that might occur due to due network delays or other factors.

Make the file executable

chmod +x state-sync.sh

Stop the node

sudo systemctl stop cosmovisor.service

Launch the state-sync script

./state-sync.sh

Reset the node

# On some tendermint chains
sentinelhub unsafe-reset-all

# On other tendermint chains
sentinelhub tendermint unsafe-reset-all --home $HOME/.sentinelhub --keep-addr-book

Start the node

sudo systemctl start cosmovisor.service

Use this command to check logs in real time

sudo journalctl -u cosmovisor.service -f

If everything goes well, your node should start syncing within 10 minutes.