allow limiting bandwidth usage on public ports inspred by gnosis pulling 500 MBit/s

setup-bandwidth-limit-cron.sh

@@ -0,0 +1,87 @@
+#!/bin/bash
+# Helper script to set up cronjob for bandwidth limiting
+# This will add a cronjob entry to apply bandwidth limits every 5 minutes
+#
+# Usage: ./setup-bandwidth-limit-cron.sh <compose-file> [BANDWIDTH_LIMIT]
+# Example: ./setup-bandwidth-limit-cron.sh rpc/gnosis/reth/gnosis-mainnet-reth-pruned-trace.yml
+# Example: ./setup-bandwidth-limit-cron.sh rpc/gnosis/reth/gnosis-mainnet-reth-pruned-trace.yml 20mbit
+
+set -euo pipefail
+
+BASEPATH="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_PATH="$BASEPATH/limit-bandwidth.sh"
+
+if [ $# -lt 1 ]; then
+    echo "Usage: $0 <compose-file>"
+    echo ""
+    echo "This script sets up a cronjob to apply bandwidth limits every 5 minutes."
+    echo "The cronjob will run: $SCRIPT_PATH <compose-file> start"
+    echo ""
+    echo "Example:"
+    echo "  $0 rpc/gnosis/reth/gnosis-mainnet-reth-pruned-trace.yml"
+    exit 1
+fi
+
+COMPOSE_FILE="$1"
+BANDWIDTH_LIMIT="${2:-100mbit}"  # Default to 100mbit if not specified
+
+# Resolve compose file path
+if [ ! -f "$COMPOSE_FILE" ]; then
+    if [ -f "$BASEPATH/$COMPOSE_FILE" ]; then
+        COMPOSE_FILE="$BASEPATH/$COMPOSE_FILE"
+    else
+        echo "Error: Compose file not found: $1"
+        exit 1
+    fi
+fi
+
+COMPOSE_FILE=$(realpath "$COMPOSE_FILE")
+SCRIPT_PATH=$(realpath "$SCRIPT_PATH")
+
+# Create cronjob entry with bandwidth limit
+if [ "$BANDWIDTH_LIMIT" != "100mbit" ]; then
+    CRON_ENTRY="*/5 * * * * sudo BANDWIDTH_LIMIT=$BANDWIDTH_LIMIT $SCRIPT_PATH $COMPOSE_FILE start"
+else
+    CRON_ENTRY="*/5 * * * * sudo $SCRIPT_PATH $COMPOSE_FILE start"
+fi
+
+echo "Setting up cronjob for bandwidth limiting..."
+echo ""
+echo "Compose file: $COMPOSE_FILE"
+echo "Script: $SCRIPT_PATH"
+echo "Bandwidth limit: $BANDWIDTH_LIMIT per port"
+echo "Cron entry: $CRON_ENTRY"
+echo ""
+
+# Check if cronjob already exists
+if crontab -l 2>/dev/null | grep -qF "$COMPOSE_FILE start"; then
+    echo "Warning: A cronjob for this compose file already exists."
+    echo ""
+    echo "Current crontab entries:"
+    crontab -l 2>/dev/null | grep "$COMPOSE_FILE" || true
+    echo ""
+    read -p "Do you want to replace it? (y/N) " -n 1 -r
+    echo
+    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+        echo "Cancelled."
+        exit 0
+    fi
+    
+    # Remove existing entry
+    crontab -l 2>/dev/null | grep -vF "$COMPOSE_FILE start" | crontab -
+fi
+
+# Add new cronjob
+(crontab -l 2>/dev/null; echo "$CRON_ENTRY") | crontab -
+
+echo "✓ Cronjob added successfully!"
+echo ""
+echo "To view your crontab:"
+echo "  crontab -l"
+echo ""
+echo "To remove this cronjob:"
+echo "  crontab -e"
+echo "  (then delete the line containing: $COMPOSE_FILE start)"
+echo ""
+echo "To test the script manually:"
+echo "  sudo $SCRIPT_PATH $COMPOSE_FILE start"