scripts/bash/docker-network.sh
2025-04-14 09:22:15 +02:00

110 lines
3.8 KiB
Bash

#!/bin/sh
# ╭───────────────╮
# │ env functions │
# ╰───────────────╯
# ───────────────────────────────────< ANSI color codes >───────────────────────────────────
RED='\033[0;31m'
CYAN='\033[0;36m'
YELLOW='\033[0;33m'
LIGHT_GREEN='\033[0;92m'
BOLD='\033[1m'
NC='\033[0m' # No Color
echo_error() {
printf "${BOLD}${RED}ERROR: ${NC}${RED}%s${NC}\n" "$1" >&2
}
echo_info() {
printf "${BOLD}${CYAN}INFO: ${NC}${CYAN}%s${NC}\n" "$1"
}
echo_warning() {
printf "${BOLD}${YELLOW}WARNING: ${NC}${YELLOW}%s${NC}\n" "$1"
}
echo_note() {
printf "${BOLD}${LIGHT_GREEN}NOTE: ${NC}${LIGHT_GREEN}%s${NC}\n" "$1"
}
command_exists() {
command -v "$@" >/dev/null 2>&1
}
# ─────────────< Check if the user is root and set sudo variable if necessary >─────────────
check_root() {
if [ "$(id -u)" -ne 0 ]; then
if command_exists sudo; then
echo_info "User is not root. Using sudo for privileged operations."
_sudo="sudo"
else
echo_error "No sudo found and you're not root! Can't install packages."
return 1
fi
else
echo_info "Root access confirmed."
_sudo=""
fi
}
# ──────────────────────< Check if the given command exists silently >──────────────────────
command_exists() {
command -v "$@" >/dev/null 2>&1
}
# ╭────────────────────────────────────╮
# │ insert your scripts/functions here │
# ╰────────────────────────────────────╯
# Function to initialize or update the Docker daemon configuration
dnetwork_init() {
if ! command_exists docker; then
echo_error "No docker was found! Cannot continue!"
return 1
fi
CONFIG_FILE="/etc/docker/daemon.json"
echo_info "Checking Docker daemon configuration..."
# Check if the configuration file exists
if [ ! -f "$CONFIG_FILE" ]; then
echo_warning "Docker daemon configuration file not found. Creating it."
${_sudo} mkdir -p /etc/docker
${_sudo} tee "$CONFIG_FILE" >/dev/null <<EOF
{
"default-address-pools": [
{
"base": "10.0.0.0/8",
"size": 24
}
]
}
EOF
echo_note "Configuration file created with default network."
else
# Check if the "default-address-pools" entry exists
if grep -q '"default-address-pools"' "$CONFIG_FILE"; then
echo_note "Docker daemon configuration already contains 'default-address-pools'. No changes made."
else
echo_warning "Adding 'default-address-pools' to existing configuration."
${_sudo} jq '. + {"default-address-pools": [{"base": "10.0.0.0/8", "size": 24}]}' "$CONFIG_FILE" | ${_sudo} tee "$CONFIG_FILE.tmp" >/dev/null
${_sudo} mv "$CONFIG_FILE.tmp" "$CONFIG_FILE"
echo_note "Default address pool added to configuration."
fi
fi
echo_info "Restarting Docker to apply changes..."
${_sudo} systemctl restart docker && echo_note "Docker restarted successfully." || echo_error "Failed to restart Docker."
}
# ───────────────────────────────< main function to execute >───────────────────────────────
main() {
if check_root; then
dnetwork_init
else
echo_error "Something went terribly wrong!"
fi
}
main