Overview
Prysm is a Go implementation of Ethereum protocol with a focus on usability, security, and reliability. Prysm is developed by Prysmatic Labs , a company with the sole focus on the development of their client. Prysm is written in Go and released under a GPL-3.0 license.
Official Links
1. Initial configuration
Create a service user for the consensus service, create data directory and assign ownership.
Copy sudo adduser --system --no-create-home --group consensus
sudo mkdir -p /var/lib/prysm/beacon
sudo chown -R consensus:consensus /var/lib/prysm/beacon Install dependencies.
Copy sudo apt install curl jq git -y 2. Install Binaries
Downloading binaries is often faster and more convenient.
Building from source code can offer better compatibility and is more aligned with the spirit of FOSS (free open source software).
Run the following to automatically download the latest binaries.
Copy cd $HOME
prysm_version=$(curl -f -s https://prysmaticlabs.com/releases/latest)
file_beacon=beacon-chain-${prysm_version}-linux-amd64
file_validator=validator-${prysm_version}-linux-amd64
curl -f -L "https://prysmaticlabs.com/releases/${file_beacon}" -o beacon-chain
curl -f -L "https://prysmaticlabs.com/releases/${file_validator}" -o validator
chmod +x beacon-chain validator Install the binaries.
Copy sudo mv beacon-chain validator /usr/local/bin Install Bazel
Copy wget -O bazel https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64
chmod +x bazel
sudo mv bazel /usr/local/bin Build the binaries.
Copy mkdir -p ~/git
cd ~/git
git clone https://github.com/prysmaticlabs/prysm.git
cd prysm
git fetch --tags
RELEASETAG=$(curl -s https://api.github.com/repos/prysmaticlabs/prysm/releases/latest | jq -r .tag_name)
git checkout tags/$RELEASETAG
bazel build //cmd/beacon-chain:beacon-chain --config=release
bazel build //cmd/validator:validator --config=release Verify Prysm was built properly by displaying the help menu.
Copy bazel run //beacon-chain -- --help Install the binaries.
Copy sudo cp -a $HOME/git/prysm /usr/local/bin/prysm 3. Setup and configure systemd
Create a systemd unit file to define your consensus.service configuration.
Copy sudo nano /etc/systemd/system/consensus.service Depending on whether you're downloading binaries or building from source, choose the appropriate option. Paste the following configuration into the file.
Copy [Unit]
Description=Prysm Consensus Layer Client service for Goerli
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com
[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
ExecStart=/usr/local/bin/beacon-chain \
--goerli \
--datadir=/var/lib/prysm/beacon \
--checkpoint-sync-url=https://goerli.beaconstate.info \
--genesis-beacon-api-url=https://goerli.beaconstate.info \
--execution-endpoint=http://localhost:8551 \
--jwt-secret=/secrets/jwtsecret \
--accept-terms-of-use=true \
--suggested-fee-recipient=<0x_CHANGE_THIS_TO_MY_ETH_FEE_RECIPIENT_ADDRESS>
[Install]
WantedBy=multi-user.target
Copy [Unit]
Description=Prysm Consensus Layer Client service for Goerli
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com
[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
WorkingDirectory=/usr/local/bin/prysm
ExecStart=bazel run //cmd/beacon-chain --config=release -- \
--goerli \
--datadir=/var/lib/prysm/beacon \
--checkpoint-sync-url=https://goerli.beaconstate.info \
--genesis-beacon-api-url=https://goerli.beaconstate.info \
--execution-endpoint=http://localhost:8551 \
--jwt-secret=/secrets/jwtsecret \
--accept-terms-of-use=true \
--suggested-fee-recipient=<0x_CHANGE_THIS_TO_MY_ETH_FEE_RECIPIENT_ADDRESS>
[Install]
WantedBy=multi-user.target Replace<0x_CHANGE_THIS_TO_MY_ETH_FEE_RECIPIENT_ADDRESS> with your own Ethereum address that you control. Tips are sent to this address and are immediately spendable.
Not staking? If you only want a full node, delete the whole lines beginning with
Copy --suggested-fee-recipient To exit and save, press Ctrl + X, then Y, then Enter.
Run the following to enable auto-start at boot time.
Copy sudo systemctl daemon-reload
sudo systemctl enable consensus Finally, start your consensus layer client and check it's status.
Copy sudo systemctl start consensus
sudo systemctl status consensus Press Ctrl + C to exit the status.
Check your logs to confirm that the consensus clients are up and syncing.
Copy sudo journalctl -fu consensus | ccze Example of Synced Consensus Client Logs
Copy "Peer summary" activePeers=69 inbound=0 outbound=69 prefix=p2p
"Synced new block" block=0xb5ccb2f85... epoch=1837 finalizedEpoch=1838 finalizedRoot=0x1dce0... prefix=blockchain slot=21338 "Finished applying state transition" attestations=128 payloadHash=0x000000000000 prefix=blockchain slot=2138 syncBitsCount=213 txCount=0"terminal difficulty has not been reached yet" latestDifficulty=10000000 prefix=powchain terminalDifficulty=10000000 4. Helpful consensus client commands
View Logs Stop Start View Status
Copy sudo journalctl -fu consensus | ccze Example of Synced Prysm Consensus Client Logs
Copy time="2023-02-02 11:21:00" level=info msg="Peer summary" activePeers=35 inbound=10 outbound=25 prefix=p2p
time="2023-02-02 11:21:00" level=info msg="Synced new block" block=0xd9ddeza1289... epoch=11795 finalizedEpoch=111794 finalizedRoot=0x462e3275... prefix=blockchain slot=31205
time="2023-02-02 11:21:00" level=info msg="Finished applying state transition" attestations=64 payloadHash=0x000000000000 prefix=blockchain slot=31205 syncBitsCount=209 txCount=0
Copy sudo systemctl stop consensus
Copy sudo systemctl start consensus
Copy sudo systemctl status consensus Now that your consensus client is configured and started, you have a full node.
Proceed to the next step on setting up your validator client, which turns a full node into a staking node.
