Proxmox/misc/install.func
tteckster 9192b8b076
Update install.func
added code descriptions
2023-05-15 18:33:04 -04:00

145 lines
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# This function sets color variables for formatting output in the terminal
color() {
YW=$(echo "\033[33m")
BL=$(echo "\033[36m")
RD=$(echo "\033[01;31m")
BGN=$(echo "\033[4;92m")
GN=$(echo "\033[1;92m")
DGN=$(echo "\033[32m")
CL=$(echo "\033[m")
RETRY_NUM=10
RETRY_EVERY=3
CM="${GN}✓${CL}"
CROSS="${RD}✗${CL}"
BFR="\\r\\033[K"
HOLD="-"
}
# This function enables IPv6 if it's not disabled and sets verbose mode if the global variable is set to "yes"
verb_ip6() {
if [ "$VERBOSE" = "yes" ]; then
set -x
STD=""
else STD="silent"; fi
silent() { "$@" >/dev/null 2>&1; }
if [ "$DISABLEIPV6" == "yes" ]; then
echo "net.ipv6.conf.all.disable_ipv6 = 1" >>/etc/sysctl.conf
$STD sysctl -p
fi
}
# This function sets error handling options and defines the error_handler function to handle errors
catch_errors() {
set -Eeuo pipefail
trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
}
# This function handles errors
error_handler() {
local exit_code="$?"
local line_number="$1"
local command="$2"
local error_message="${RD}[ERROR]${CL} in line ${RD}$line_number${CL}: exit code ${RD}$exit_code${CL}: while executing command ${YW}$command${CL}"
echo -e "\n$error_message"
if [[ "$line_number" -eq 22 ]]; then
echo -e "The silent function has suppressed the error, run the script with verbose mode enabled, which will provide more detailed output.\n"
fi
}
# This function prints an informational message
msg_info() {
local msg="$1"
echo -ne " ${HOLD} ${YW}${msg}..."
}
# This function prints a success message
msg_ok() {
local msg="$1"
echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
}
# This function prints an error message
msg_error() {
local msg="$1"
echo -e "${BFR} ${CROSS} ${RD}${msg}${CL}"
}
# This function sets up the Container OS by generating the locale, setting the timezone, and checking the network connection
setting_up_container() {
msg_info "Setting up Container OS"
sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
locale-gen >/dev/null
echo $tz >/etc/timezone
ln -sf /usr/share/zoneinfo/$tz /etc/localtime
for ((i = RETRY_NUM; i > 0; i--)); do
if [ "$(hostname -I)" != "" ]; then
break
fi
echo 1>&2 -en "${CROSS}${RD} No Network! "
sleep $RETRY_EVERY
done
if [ "$(hostname -I)" = "" ]; then
echo 1>&2 -e "\n${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}"
echo -e " 🖧 Check Network Settings"
exit 1
fi
msg_ok "Set up Container OS"
msg_ok "Network Connected: ${BL}$(hostname -I)"
}
# This function checks the network connection by pinging a known IP address and prompts the user to continue if the internet is not connected
network_check() {
set +e
trap - ERR
if ping -c 1 -W 1 1.1.1.1 &>/dev/null; then msg_ok "Internet Connected"; else
msg_error "Internet NOT Connected"
read -r -p "Would you like to continue anyway? <y/N> " prompt
if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
echo -e " ⚠️ ${RD}Expect Issues Without Internet${CL}"
else
echo -e " 🖧 Check Network Settings"
exit 1
fi
fi
RESOLVEDIP=$(getent hosts github.com | awk '{ print $1 }')
if [[ -z "$RESOLVEDIP" ]]; then msg_error "DNS Lookup Failure"; else msg_ok "DNS Resolved github.com to ${BL}$RESOLVEDIP${CL}"; fi
set -e
trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
}
# This function updates the Container OS by running apt-get update and upgrade
update_os() {
msg_info "Updating Container OS"
$STD apt-get update
$STD apt-get -y upgrade
msg_ok "Updated Container OS"
}
# This function modifies the message of the day (motd) and SSH settings
motd_ssh() {
echo "export TERM='xterm-256color'" >>/root/.bashrc
echo -e "$APPLICATION LXC provided by https://tteck.github.io/Proxmox/\n" >/etc/motd
chmod -x /etc/update-motd.d/*
if [[ "${SSH_ROOT}" == "yes" ]]; then
sed -i "s/#PermitRootLogin prohibit-password/PermitRootLogin yes/g" /etc/ssh/sshd_config
systemctl restart sshd
fi
}
# This function customizes the container by modifying the getty service and enabling auto-login for the root user
customize() {
if [[ "$PASSWORD" == "" ]]; then
msg_info "Customizing Container"
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//')
msg_ok "Customized Container"
fi
}