93 lines
2.4 KiB
Bash
93 lines
2.4 KiB
Bash
#!/bin/bash
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set -euo pipefail
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DOCKER_CONFIG="/etc/docker/daemon.json"
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JQ=$(command -v jq || true)
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if [[ -z "$JQ" ]]; then
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echo "❌ jq is required but not installed."
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exit 1
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fi
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# Step 1: Check if default-address-pools exists and extract current second octet
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DEFAULT_OCTET=""
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if [[ -f "$DOCKER_CONFIG" ]] && grep -q '"default-address-pools"' "$DOCKER_CONFIG"; then
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BASE=$(jq -r '.["default-address-pools"][0].base' "$DOCKER_CONFIG")
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if [[ "$BASE" =~ ^10\.([0-9]+)\. ]]; then
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DEFAULT_OCTET="${BASH_REMATCH[1]}"
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echo "Found existing default-address-pools base: $BASE"
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fi
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fi
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# Step 2: Ask for second octet (suggest default if available)
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USE_EXISTING_CONFIG=false
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if [[ -n "$DEFAULT_OCTET" ]]; then
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read -rp "Use existing second octet ($DEFAULT_OCTET)? [Y/n]: " confirm
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confirm=${confirm:-Y}
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if [[ "$confirm" =~ ^[Nn]$ ]]; then
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read -rp "Enter new second octet (e.g. 102): " OCTET
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else
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OCTET="$DEFAULT_OCTET"
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USE_EXISTING_CONFIG=true
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fi
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else
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read -rp "Enter second octet for Docker address pool (e.g. 102): " OCTET
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fi
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# Validate input
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if ! [[ "$OCTET" =~ ^[0-9]+$ ]] || ((OCTET < 1 || OCTET > 254)); then
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echo "❌ Invalid octet: $OCTET"
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exit 1
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fi
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# Step 3: Write daemon.json (overwrite or create) only if needed
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if [[ "$USE_EXISTING_CONFIG" == false ]]; then
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echo "Writing Docker daemon config with base: 10.${OCTET}.0.0/16"
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sudo mkdir -p /etc/docker
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cat <<EOF | sudo tee "$DOCKER_CONFIG" > /dev/null
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{
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"default-address-pools": [
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{
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"base": "10.${OCTET}.0.0/16",
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"size": 24
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}
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]
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}
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EOF
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echo "Restarting Docker..."
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sudo systemctl restart docker
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else
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echo "🟡 Skipping daemon config update and Docker restart (using existing settings)"
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fi
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# Step 4: Create standard networks
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declare -A networks
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networks[internet]="10.${OCTET}.100.0/24"
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networks[pangolin_transport]="10.${OCTET}.200.0/24"
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for name in "${!networks[@]}"; do
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subnet="${networks[$name]}"
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if docker network inspect "$name" >/dev/null 2>&1; then
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echo "✅ Network '$name' already exists."
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else
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echo "Creating network '$name' with subnet $subnet"
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if [[ "$name" == "internet" ]]; then
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docker network create \
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--driver=bridge \
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--subnet="$subnet" \
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"$name"
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else
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docker network create \
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--driver=bridge \
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--subnet="$subnet" \
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--internal \
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"$name"
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fi
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fi
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done
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echo "✅ Done. Docker daemon configured and standard networks created."
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