Add show-ram.sh script to show RAM usage per node

Shows RAM usage for all containers in a compose file with total.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

show-ram.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# Show RAM usage for containers in a compose file
+# Usage: ./show-ram.sh <compose-file-name>
+# Example: ./show-ram.sh ethereum-mainnet-geth-archive
+
+BASEPATH="$(dirname "$0")"
+COMPOSE_NAME="$1"
+
+if [ -z "$COMPOSE_NAME" ]; then
+    echo "Usage: ./show-ram.sh <compose-file-name>"
+    echo "Example: ./show-ram.sh ethereum-mainnet-geth-archive"
+    exit 1
+fi
+
+COMPOSE_FILE="${BASEPATH}/${COMPOSE_NAME}.yml"
+
+if [ ! -f "$COMPOSE_FILE" ]; then
+    echo "Error: Compose file not found: $COMPOSE_FILE"
+    exit 1
+fi
+
+# Get container IDs for this compose project
+CONTAINER_IDS=$(docker compose -f "$COMPOSE_FILE" ps -q 2>/dev/null)
+
+if [ -z "$CONTAINER_IDS" ]; then
+    echo "No running containers found for $COMPOSE_NAME"
+    exit 0
+fi
+
+echo "RAM usage for $COMPOSE_NAME:"
+echo "----------------------------------------"
+
+# Show stats for each container
+docker stats --no-stream --format "{{.Name}}\t{{.MemUsage}}\t{{.MemPerc}}" $CONTAINER_IDS
+
+echo "----------------------------------------"
+
+# Calculate total
+total_mib=$(docker stats --no-stream --format "{{.MemUsage}}" $CONTAINER_IDS | \
+    awk -F'/' '{
+        val=$1;
+        gsub(/[^0-9.]/,"",val);
+        if($1 ~ /GiB/) val*=1024;
+        sum+=val
+    } END {printf "%.0f", sum}')
+
+if [ "$total_mib" -ge 1024 ]; then
+    total_gib=$(echo "scale=2; $total_mib / 1024" | bc)
+    echo "Total: ${total_gib} GiB"
+else
+    echo "Total: ${total_mib} MiB"
+fi