|3112022||juno-1||11 GB||24 minutes ago||lz4||null||100/0/10 Custom Pruning||Frankfurt||juno_3112022.tar.lz4|
|3098267||juno-1||8 GB||1 day ago||lz4||null||100/0/10 Custom Pruning||Frankfurt||juno_3098267.tar.lz4|
We take a node snapshot every day. We then delete all the previous snapshots to free up the space on the file server.
The snapshot is designed for node opeartors to run an efficient validator service on Juno chain. To make the snapshot as small as possible while still viable as a validator, we use the following setting to save on the disk space. We suggest you make the same adjustment on your node too. Please notice that your node will have very limited functionality beyond signing blocks with the efficient disk space utilization. For example, your node will not be able to serve as a RPC endpoint (which is not suggested to run on a validator node anyway).
Since we periodically state-sync our snapshot nodes, you might notice that sometimes the size of our snapshot is surprisingly small.
pruning = "custom" pruning-keep-recent = "100" pruning-keep-every = "0" pruning-interval = "10"
indexer = "null"
Install lz4 if needed
sudo apt update sudo apt install snapd sudo snap install lz4
Download the snapshot
wget -O juno_3112022.tar.lz4 https://snapshots2.polkachu.com/snapshots/juno/juno_3112022.tar.lz4
Stop your node
sudo service cosmovisor stop
Reset your node. WARNING: This will erase your node
If you are
already running validator, be sure you backed up your
prior to running the the command.
The command does not wipe the file. However, you
should have a backup of it already in a safe location.
# On some tendermint chains cosmovisor unsafe-reset-all # On other tendermint chains cosmovisor tendermint unsafe-reset-all --home $HOME/.juno
Decompress the snapshot to your database location. You database location
will be something to the effect of
depending on your node implemention
lz4 -c -d juno_3112022.tar.lz4 | tar -x -C YOUR_DATABASE_LOCATION
Restart your node
sudo service cosmovisor start
Remove downloaded snapshot to free up space
rm -v juno_3112022.tar.lz4
Make sure that your node is running
sudo service cosmovisor status sudo journalctl -u cosmovisor -f
ADVANCED ROUTE: The above solution requires you to download the compressed file, uncompressed it and then delete the original file. This requires extra storage space on your server. You can run the following combo command to stream the snapshot into your database location. For advanced users only:
curl -o - -L https://snapshots2.polkachu.com/snapshots/juno/juno_3112022.tar.lz4 | lz4 -c -d - | tar -x -C YOUR_DATABASE_LOCATION
ALTERNATIVE ROUTE: We also have Juno state-sync service to help you bootstrap a node.