Written form the perspective of using Ubuntu with a dedicated server or VPS, but most of this will apply if you are running a bare metal machine as well. If running on RHEL/CentOS, Arch, or FreeBSD you'll likely need to search for comaptible packages in both official and community repos. Some commands may be slightly different as well.
For dedicated server or VPS providers please look into Hetzner Digital Ocean Contabo and others. If you want to experiment with a decentralized solution, consider Akash
Whenever you see gaia used make sure to replace with whatever node you are installing.
ssh root@ipaddress
apt update && apt upgrade -y
Replace gaia with an alternate name if installing a different node.
adduser username
adduser gaia
Create at least two user accounts: one for yourself and one for installing your node
usermod username -aG sudo
usermod gaia -aG sudo
su - gaia
sudo apt install make build-essential gcc git jq chrony -y
Check https://go.dev/dl for latest version before running
wget https://golang.org/dl/go1.18.4.linux-amd64.tar.gz
sudo tar -C /usr/local -xzf go1.18.4.linux-amd64.tar.gz
Once Go is downloaded and extracted to /usr/local/ you can add this to any user's .profile
cat <<EOF >> ~/.profile
# Go
GOROOT=/usr/local/go
GOPATH=$HOME/go
GO111MODULE=on
PATH=$PATH:/usr/local/go/bin:$HOME/go/bin
EOF
source ~/.profile
go version
which go
sudo nano /etc/ssh/sshd_config
Uncomment Port 22 and change 22 to xxxx (xxxx = custom port)
Add or uncomment the line AllowUsers username1 username2 to restrict ssh login to defined users only. Edit username1 with the user you wish to grant ssh access to. This will prevent ssh logins using your gaia or node user account.
Press CTRL+X and save your file
sudo systemctl restart sshd
This is just an example using default ports, please set rules according to your setup and specific needs:
sudo ufw default allow outgoing
sudo ufw default deny incoming
sudo ufw allow xxxx
sudo ufw allow 26656
sudo ufw allow 9090
Open RPC to your specific local machine's IP address to connect and interact with your node remoately. This rule will need to be upated whenever your local IP changes.
sudo ufw allow from youripaddress to any port 26657
sudo ufw enable
sudo ufw status
ssh -p xxxx user@ipaddress
sudo -i
exit
sudo nano /etc/ssh/sshd_config
Change 'PermitRootLogin' from "Yes" to "No" and confirm it is uncommented.
CTRL+X and Save
sudo systemctl restart sshd
exit
ssh -p xxxx root@ipaddress
ssh -p xxxx gaia@ipaddress
You are now ready to install a node