Proxmox/node-red_setup.sh

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2021-08-12 14:46:24 +00:00
#!/usr/bin/env bash
# Setup script environment
set -o errexit #Exit immediately if a pipeline returns a non-zero status
set -o errtrace #Trap ERR from shell functions, command substitutions, and commands from subshell
set -o nounset #Treat unset variables as an error
set -o pipefail #Pipe will exit with last non-zero status if applicable
shopt -s expand_aliases
alias die='EXIT=$? LINE=$LINENO error_exit'
trap die ERR
trap 'die "Script interrupted."' INT
function error_exit() {
trap - ERR
local DEFAULT='Unknown failure occured.'
local REASON="\e[97m${1:-$DEFAULT}\e[39m"
local FLAG="\e[91m[ERROR:LXC] \e[93m$EXIT@$LINE"
msg "$FLAG $REASON"
exit $EXIT
}
function msg() {
local TEXT="$1"
echo -e "$TEXT"
}
# Prepare container OS
msg "Setting up container OS..."
sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
locale-gen >/dev/null
apt-get -y purge openssh-{client,server} >/dev/null
apt-get autoremove >/dev/null
# Update container OS
msg "Updating container OS..."
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apt-get update >/dev/null
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apt-get -qqy upgrade &>/dev/null
# Install prerequisites
msg "Installing prerequisites..."
apt-get -qqy install \
curl \
sudo &>/dev/null
msg "Installing Node..."
sudo apt -y install nodejs npm &>/dev/null
msg "Installing PM2..."
npm install -g pm2 &>/dev/null
# Install Node Red
msg "Installing Node-RED..."
npm install -g --unsafe-perm node-red &>/dev/null
# Set up PM2 to manage startup of Node Red
msg "Setting up PM2..."
/usr/local/bin/pm2 start /usr/local/bin/node-red &>/dev/null
/usr/local/bin/pm2 save &>/dev/null
/usr/local/bin/pm2 startup &>/dev/null
# Customize container
msg "Customizing container..."
rm /etc/motd # Remove message of the day after login
rm /etc/update-motd.d/10-uname # Remove kernel information after login
touch ~/.hushlogin # Remove 'Last login: ' and mail notification after login
GETTY_OVERRIDE="/etc/systemd/system/container-getty@1.service.d/override.conf"
mkdir -p $(dirname $GETTY_OVERRIDE)
cat << EOF > $GETTY_OVERRIDE
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin root --noclear --keep-baud tty%I 115200,38400,9600 \$TERM
EOF
systemctl daemon-reload
systemctl restart $(basename $(dirname $GETTY_OVERRIDE) | sed 's/\.d//')
# Cleanup container
msg "Cleanup..."
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rm -rf /node-red_setup.sh /var/{cache,log}/* /var/lib/apt/lists/*