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cicorias/addnetwork.sh

Last active August 21, 2025 10:42
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setting up RDP for Ubuntu Server 24.04
Raw
addnetwork.sh
sudo ip addr flush dev eth0
sudo ip addr add 10.1.1.1/24 dev eth0
sudo ip link set eth0 up
sudo ip route add default via 10.1.1.1
Raw
saveinstaller.sh
#!/usr/bin/env bash
set -euo pipefail
DEST="$HOME/installer-saved"
ISO_MNT="/mnt/iso"
ISO_IMG="ubuntu-24.04.3-live-server-amd64.iso"
echo "[*] Creating destination folder at $DEST..."
mkdir -p "$DEST"
# 1. Copy installer logs (works after installation or during live install)
if [ -d /var/log/installer ]; then
echo "[*] Copying installer logs..."
cp -r /var/log/installer "$DEST/"
fi
# 2. If ISO is available locally, mount it and copy grub + casper
if [ -f "$ISO_IMG" ]; then
echo "[*] Mounting ISO..."
sudo mkdir -p "$ISO_MNT"
sudo mount -o loop "$ISO_IMG" "$ISO_MNT"
echo "[*] Copying GRUB config..."
mkdir -p "$DEST/grub"
cp -v "$ISO_MNT/boot/grub/grub.cfg" "$DEST/grub/"
echo "[*] Copying casper directory..."
mkdir -p "$DEST/casper"
cp -av "$ISO_MNT/casper/"* "$DEST/casper/"
echo "[*] Unmounting ISO..."
sudo umount "$ISO_MNT"
sudo rmdir "$ISO_MNT"
else
echo "[!] ISO image not found at $ISO_IMG"
echo " Place the ISO in current directory or update the script."
fi
# 3. Extract initrd to inspect casper scripts
INITRD="$DEST/casper/initrd"
if [ -f "$INITRD" ]; then
echo "[*] Extracting casper initrd..."
mkdir -p "$DEST/initrd-extracted"
(
cd "$DEST/initrd-extracted"
zcat "$INITRD" | cpio -idmv || true
)
fi
# 4. Create archive while keeping originals
ARCHIVE="$HOME/installer-saved.tar.gz"
echo "[*] Creating archive $ARCHIVE..."
tar -czf "$ARCHIVE" -C "$HOME" "installer-saved"
echo "[*] Done!"
echo " Directory: $DEST"
echo " Archive: $ARCHIVE"
Raw
setnetplan.sh
#!/usr/bin/env bash
set -euo pipefail
### === Edit these if needed ===
PXE_SERVER_IP="10.1.1.1" # static IP for eth0
NETWORK_INTERFACE="eth0" # private/PXE NIC
export NETMASK="255.255.255.0" # netmask for eth0 -- pyton process needs this
PUBLIC_INTERFACE="eth1" # DHCP NIC
DNS_SERVERS="8.8.8.8,8.8.4.4" # leave empty to rely on DHCP’s DNS
NETPLAN_FILE="/etc/netplan/01-dual-nic.yaml"
### ============================
# Convert mask -> CIDR using python3 (no dependencies)
PREFIX=$(
python3 - <<'PY'
import os
m=os.environ["NETMASK"]
print(sum(bin(int(o)).count("1") for o in m.split(".")))
PY
)
ADDR_CIDR="${PXE_SERVER_IP}/${PREFIX}"
# Build YAML (no read -d '')
YAML=$(cat <<EOF
# Generated by setup-dual-nic-clean.sh
network:
version: 2
renderer: networkd
ethernets:
${NETWORK_INTERFACE}:
dhcp4: false
dhcp6: false
addresses: [ "${ADDR_CIDR}" ]
$( [ -n "${DNS_SERVERS}" ] && echo " nameservers: { addresses: [ $(echo "${DNS_SERVERS}" | sed 's/,/ , /g') ] }" )
optional: true
${PUBLIC_INTERFACE}:
dhcp4: true
dhcp6: false
dhcp4-overrides:
route-metric: 100
optional: true
EOF
)
echo "CIDR computed: ${ADDR_CIDR}"
# Backup any existing files to avoid conflicts (like 50-cloud-init.yaml)
sudo mkdir -p /etc/netplan/backup
for f in /etc/netplan/*.yaml; do
[ -e "$f" ] && sudo cp -a "$f" "/etc/netplan/backup/$(basename "$f").bak"
done
# Write atomically
tmpfile=$(mktemp)
printf "%s\n" "$YAML" > "$tmpfile"
sudo mv "$tmpfile" "$NETPLAN_FILE"
sudo chmod 600 "$NETPLAN_FILE"
echo "===== Wrote $NETPLAN_FILE ====="
sudo cat "$NETPLAN_FILE"
echo "================================"
# Bring links up just in case
sudo ip link set "$NETWORK_INTERFACE" up || true
sudo ip link set "$PUBLIC_INTERFACE" up || true
echo
echo "Generating with debug..."
sudo netplan --debug generate
echo
echo "Trying apply with rollback..."
sudo netplan try || { echo "netplan try failed/rolled back"; exit 1; }
echo
sudo netplan apply
echo "Applied."
echo
echo "IPv4 addresses:"
ip -4 -o a | sed 's/^[0-9]*: //'
echo
echo "Routes:"
ip route
Raw
xrdpsetup.sh
#!/usr/bin/env bash
#
# setup-gnome-xrdp.sh
# Installs GNOME desktop and xRDP on Ubuntu 24.04 Server
# Usage: sudo bash setup-gnome-xrdp.sh
#
set -euo pipefail
log() {
echo -e "\n[INFO] $1\n"
}
if [[ $EUID -ne 0 ]]; then
echo "[ERROR] This script must be run as root (try: sudo $0)"
exit 1
fi
log "Updating package lists..."
apt update
log "Installing GNOME desktop (Ubuntu flavor)..."
# For a lighter, vanilla GNOME: replace 'ubuntu-desktop' with 'vanilla-gnome-desktop'
apt install -y ubuntu-desktop
log "Installing xRDP..."
apt install -y xrdp
log "Enabling and starting xRDP service..."
systemctl enable xrdp
systemctl start xrdp
log "Configuring default session to GNOME..."
echo gnome-session > /home/$SUDO_USER/.xsession
chown $SUDO_USER:$SUDO_USER /home/$SUDO_USER/.xsession
log "Adding $SUDO_USER to ssl-cert group..."
adduser "$SUDO_USER" ssl-cert
if command -v ufw &>/dev/null; then
log "Allowing RDP through UFW firewall..."
ufw allow 3389/tcp || true
else
log "UFW not installed; skipping firewall config."
fi
log "Done! Connect via RDP to:"
hostname -I | awk '{print $1":3389"}'
echo -e "\nYou can now log in with your Ubuntu username and password via Remote Desktop.\n"
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