Fast Start Without Previous History

Overview

This tutorial demonstrates how to create a snapshot of your current blockchain state and restart your nodeop node from that snapshot, effectively discarding all previous historical data. This approach is useful for reducing storage requirements and speeding up node startup by removing old blockchain history while maintaining current account states and smart contract data. The process involves creating a snapshot, removing old state files, and restarting with the snapshot.

Important Consideration

This process will permanently delete all historical blockchain data from your local node. Only proceed if you are certain you do not need access to previous transaction history, account states, or other historical information.

Prerequisites

• Install the currently supported version of clio.

info

| The clio tool and kiod are bundled with the Wire software. Installing Wire core will install the clio and kiod command line tools.

• Learn about Using Nodeop.
  • Get familiar with state_history_plugin.

Steps

Step 1: Create a snapshot of the current chain state

curl http://localhost:8887/v1/producer/create_snapshot

A snapshot will be saved at /opt/wire-network/blockproducer/data/snapshots/snapshot-xxxxxxx.bin.

Step 2: Remove data/state directory

danger

Removing state history files will cause the node to lose all previous history. This is a destructive operation and should only be done if you are sure you do not need the old history.

rm -rf /opt/wire-network/blockproducer/data/state
rm -rf /opt/wire-network/chain-api/data/state

Step 3: Run ./start.sh with --snapshot option

cd /opt/wire-network/blockproducer
./start.sh --snapshot data/snapshots/snapshot-xxxxxxx.bin

Do not stop nodeop until it has received at least 1 block from the network, or it won't be able to restart. Tail the logs /opt/blockproducer/data/nodeop.log.

Notes

If nodeop fails to receive blocks from the network, then try the above using net_api_plugin. Use clio net disconnect and clio net connect to reconnect nodes which timed out.

You must have the net_api_plugin enabled on your nodeop instance. That plugin is not enabled /opt/wire-network/blockproducer/config/config.ini by default, so you will need to stop your node and edit the config.ini file to enable it:

# ....previous plugins ...
plugin = sysio::net_api_plugin

Caution when using net_api_plugin

| Use use a firewall to block access to your http-server-address despite port 8887 not being exposed to the public by default. The net_api_plugin is not intended for public use and should only be used in a secure environment.