Install Erigon client

One-page interactive guide to install Erigon client and configurate it for running on supported chain.

Disclaimer

This guide is for informational purposes only. The author nor website owner does not guarantee accuracy of the information in this guide and is not responsible for any damages or losses incurred by following the guide.

Erigon client can be used for staking on various supported chains. Client installation is always only one, used by services with an individual configuration (different service name, data path and ports in use).

Interactive variables

System:
User:
SSH port:
CPU type:

Execution layer

Client:
Service:
- Data:
- Port:
- P2P:
- RPC:

Consensus layer

Client:
NodeJs version:
jdk ver version:
Beacon service:
- Data:
- Port:
- P2P:
- Quic:

Install Erigon client

Installing Erigon client

Erigon documentation: https://erigon.gitbook.io/erigon

Find the latest stable version of Erigon on Github
- Find latest Erigon version at https://github.com/ledgerwatch/erigon/releases. AMD64 v1/v2 links at Microarchitecture levels.
- Write latest stable Erigon version:

Download Erigon version

cd ~/downloads && curl -LO https://github.com/erigontech/erigon/releases/download/v/erigon_v_linux_amd64v2.tar.gz

Verify hash of donwnloaded file
Get hash of downloaded file and compare it with official hashes
```
sha256sum erigon_v_linux_amd64v2.tar.gz
```
And check it compare to the provided hash for the file from https://github.com/erigontech/erigon/releases/download/v/erigon_v_checksums.txt (Note: The link links at version )
Extract the downloaded package
```
tar xvf erigon_v_linux_amd64v2.tar.gz
```

Copy extracted Erigon library

sudo cp -a erigon_v_linux_amd64v2 /usr/local/bin/erigonlib

Remove downloaded files

cd ~/downloads && rm -r erigon_v_linux_amd64v2.tar.gz && rm -r erigon_v_linux_amd64v2

Configurate the service

Create a system user and data directory for Erigon service

Create a user

Service/User name:

sudo useradd --system --no-create-home --shell /bin/false erigon

Create a folder for Erigon data on network
Service data directory:
```
sudo mkdir -p /var/lib/erigon
```
Set access permission and ownership for the Erigon data folder
```
sudo chown -R erigon:erigon /var/lib/erigon
```

Configurate & Run Erigon Service

Choose ports for communication

Change the default ports below if you are going to stake on more chains simultaneously (e.g. Ethereum and Gnosis at once) on the same machine. If you are going to stake only, you can keep the default ports. If you are changing the default ports, be sure that the newly selected port is not already in used. A port in used may be checked with following code:
```
ss -tuln | grep ':PORT'
```
- If it returns empty response, the port is free and can be used.
Ports selection
- P2P network (TCP, UDP): (Default port: 30303)
- JSON-RPC interface (TCP): (Default port: 8545)
- Execution endpoint (TCP): (Default port: 8551)
Enable port for P2P communication (execution client)

To allow execution client synchronization, there's need to enable P2P traffic to TCP (allows the node to connect to peers) and UDP (allows node discovery) port 30303. It may be done with following UFW setup:
```
$ sudo ufw allow 30303
```

Create configuration file for Erigon service

Open configuration file

sudo nano /etc/systemd/system/erigon.service

Copy the configuration below into the file

[Unit]
Description=Erigon Execution Client (Ethereum Mainnet)
After=network.target
Wants=network.target
[Service]
User=eth-erigon
Group=eth-erigon
Type=simple
Restart=always
RestartSec=5
ExecStart=/usr/local/bin/erigonlib/erigon \
  --chain=mainnet \
  --datadir=/var/lib/erigon \
  --authrpc.jwtsecret=/var/lib/jwtsecret/ethereum.hex \
#  --externalcl \
  --prune=htcr
#  --private.api.addr= \
#  --prune.r.before=11052984 
[Install]
WantedBy=default.target

[Unit]
Description=Erigon Execution Client (Gnosis Chain)
After=network.target
Wants=network.target
[Service]
User=gno-erigon
Group=gno-erigon
Type=simple
Restart=always
RestartSec=5
ExecStart=/usr/local/bin/erigonlib/erigon \
  --chain=gnosis \
  --datadir=/var/lib/erigon \
  --authrpc.jwtsecret=/var/lib/jwtsecret/gnosis.hex \
#  --externalcl \
  --prune=htcr
#  --private.api.addr= \
#  --prune.r.before=11052984 
[Install]
WantedBy=default.target

*Note: Update JsonRpc.JwtSecretFile, if you use different

Press CTRL + X then Y then ENTER to save and exit the config file.

Start the service

sudo systemctl daemon-reload
sudo systemctl start erigon

Check the service

systemctl status erigon
journalctl -fu erigon

Start the service on system startup
```
sudo systemctl enable erigon
```