Proxmox/install/pihole-install.sh

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#!/usr/bin/env bash
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if [ "$VERBOSE" == "yes" ]; then set -x; fi
export DEBIAN_FRONTEND=noninteractive
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YW=$(echo "\033[33m")
RD=$(echo "\033[01;31m")
BL=$(echo "\033[36m")
GN=$(echo "\033[1;92m")
CL=$(echo "\033[m")
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RETRY_NUM=10
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RETRY_EVERY=3
NUM=$RETRY_NUM
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CM="${GN}${CL}"
CROSS="${RD}${CL}"
BFR="\\r\\033[K"
HOLD="-"
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set -o errexit
set -o errtrace
set -o nounset
set -o pipefail
shopt -s expand_aliases
alias die='EXIT=$? LINE=$LINENO error_exit'
trap die ERR
function error_exit() {
trap - ERR
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local reason="Unknown failure occurred."
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local msg="${1:-$reason}"
local flag="${RD}‼ ERROR ${CL}$EXIT@$LINE"
echo -e "$flag $msg" 1>&2
exit $EXIT
}
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function msg_info() {
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local msg="$1"
echo -ne " ${HOLD} ${YW}${msg}..."
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}
function msg_ok() {
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local msg="$1"
echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
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}
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function msg_error() {
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local msg="$1"
echo -e "${BFR} ${CROSS} ${RD}${msg}${CL}"
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}
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msg_info "Setting up Container OS "
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sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
locale-gen >/dev/null
while [ "$(hostname -I)" = "" ]; do
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echo 1>&2 -en "${CROSS}${RD} No Network! "
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sleep $RETRY_EVERY
((NUM--))
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if [ $NUM -eq 0 ]; then
echo 1>&2 -e "${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}"
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exit 1
fi
done
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msg_ok "Set up Container OS"
msg_ok "Network Connected: ${BL}$(hostname -I)"
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set +e
alias die=''
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if nc -zw1 8.8.8.8 443; then msg_ok "Internet Connected"; else
msg_error "Internet NOT Connected"
read -r -p "Would you like to continue anyway? <y/N> " prompt
if [[ $prompt == "y" || $prompt == "Y" || $prompt == "yes" || $prompt == "Yes" ]]; then
echo -e " ⚠️ ${RD}Expect Issues Without Internet${CL}"
else
echo -e " 🖧 Check Network Settings"
exit 1
fi
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fi
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RESOLVEDIP=$(nslookup "github.com" | awk -F':' '/^Address: / { matched = 1 } matched { print $2}' | xargs)
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if [[ -z "$RESOLVEDIP" ]]; then msg_error "DNS Lookup Failure"; else msg_ok "DNS Resolved github.com to $RESOLVEDIP"; fi
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alias die='EXIT=$? LINE=$LINENO error_exit'
set -e
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msg_info "Updating Container OS"
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apt-get update &>/dev/null
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apt-get -y upgrade &>/dev/null
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msg_ok "Updated Container OS"
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msg_info "Installing Dependencies"
apt-get install -y curl &>/dev/null
apt-get install -y sudo &>/dev/null
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apt-get install -y ufw &>/dev/null
apt-get install -y ntp &>/dev/null
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msg_ok "Installed Dependencies"
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msg_info "Installing Pi-hole"
mkdir -p /etc/pihole/
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cat <<EOF >/etc/pihole/setupVars.conf
PIHOLE_INTERFACE=eth0
PIHOLE_DNS_1=8.8.8.8
PIHOLE_DNS_2=8.8.4.4
QUERY_LOGGING=true
INSTALL_WEB_SERVER=true
INSTALL_WEB_INTERFACE=true
LIGHTTPD_ENABLED=true
CACHE_SIZE=10000
DNS_FQDN_REQUIRED=true
DNS_BOGUS_PRIV=true
DNSMASQ_LISTENING=local
WEBPASSWORD=$(openssl rand -base64 48)
BLOCKING_ENABLED=true
EOF
curl -sSL https://install.pi-hole.net | bash /dev/stdin --unattended &>/dev/null
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msg_ok "Installed Pi-hole"
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PASS=$(grep -w "root" /etc/shadow | cut -b6)
if [[ $PASS != $ ]]; then
msg_info "Customizing Container"
rm /etc/motd
rm /etc/update-motd.d/10-uname
touch ~/.hushlogin
GETTY_OVERRIDE="/etc/systemd/system/container-getty@1.service.d/override.conf"
mkdir -p $(dirname $GETTY_OVERRIDE)
cat <<EOF >$GETTY_OVERRIDE
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[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin root --noclear --keep-baud tty%I 115200,38400,9600 \$TERM
EOF
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systemctl daemon-reload
systemctl restart $(basename $(dirname $GETTY_OVERRIDE) | sed 's/\.d//')
msg_ok "Customized Container"
fi
if [[ "${SSH_ROOT}" == "yes" ]]; then
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sed -i "s/#PermitRootLogin prohibit-password/PermitRootLogin yes/g" /etc/ssh/sshd_config
systemctl restart sshd
fi
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msg_info "Cleaning up"
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apt-get autoremove >/dev/null
apt-get autoclean >/dev/null
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msg_ok "Cleaned"