create-ssh-tunnel.sh

    #! /bin/bash
    source $SCRIPT_DIR/utils.sh

    # Check if the vantage6-node user already exists
    print_step "Checking if the vantage6-node user already exists"
    NEW_USER="vantage6-node"
    if id -u "vantage6-node" >/dev/null 2>&1; then
        print_warning "The vantage6-node user already exists"
    else
        print_step "Creating new user: $NEW_USER"
        sudo useradd $NEW_USER

        # Set password for the new user
        PASSWORD=$(openssl rand -base64 16)
        echo "$NEW_USER:$PASSWORD" | sudo chpasswd
    fi


    print_step "Executing some steps as sudo user"
    source $SCRIPT_DIR/create-ssh-keys.sh

    # Tunnel settings
    print_step "Setting tunnel settings"
    export TUNNEL_HOSTNAME=$OMOP_HOST
    if ! check_command "hostname"; then
        print_step "Installing hostname package"
        sudo dnf install -y hostname &>> $LOG_DIR/install-hostname.log
    fi
    export SSH_HOST=$(hostname -I | awk '{print $1}')

    export SSH_PORT=22
    print_step "SSH_HOST: $SSH_HOST, SSH_PORT: $SSH_PORT"


    if [ -f "/etc/ssh/ssh_host_rsa_key.pub" ]; then
        export SSH_HOST_FINGERPRINT=$(cat /etc/ssh/ssh_host_rsa_key.pub)
    else
        print_error "File /etc/ssh/ssh_host_rsa_key.pub does not exist."
        print_error "Is openssh-server installed and running?"
    fi

    export SSH_USERNAME=$NEW_USER
    export SSH_KEY=$PRIVATE_KEY_FILE
    print_step "SSH_KEY: $SSH_KEY"

    export TUNNEL_BIND_IP="0.0.0.0"
    export TUNNEL_BIND_PORT=$OMOP_PORT

    export TUNNEL_REMOTE_IP="127.0.0.1"
    export TUNNEL_REMOTE_PORT=5432
    print_step "TUNNEL_REMOTE_PORT: $TUNNEL_REMOTE_PORT"