docker container debug info script

docker_compose/debugging/debug_docker_container.sh

@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+set -uo pipefail
+
+CONTAINER="${1:-}"
+COMPOSE_FILE="${2:-}"
+
+if [ -z "$CONTAINER" ]; then
+    echo "Usage:"
+    echo "  $0 <container-name> [docker-compose.yml]"
+    exit 1
+fi
+
+TIMESTAMP=$(date +%Y%m%d-%H%M%S)
+OUTDIR="/tmp/${CONTAINER}-debug-${TIMESTAMP}"
+
+mkdir -p "$OUTDIR"
+
+echo "[*] Collecting debug data for container: $CONTAINER"
+
+# --------------------------------------------------
+# Docker info
+# --------------------------------------------------
+
+docker inspect "$CONTAINER" \
+    > "$OUTDIR/docker-inspect.json" 2>&1 || true
+
+docker inspect "$CONTAINER" --format '{{.Config.Image}}' \
+    > "$OUTDIR/image.txt" 2>&1 || true
+
+# --------------------------------------------------
+# Logs
+# --------------------------------------------------
+
+docker logs "$CONTAINER" --tail=10000 \
+    > "$OUTDIR/container.log" 2>&1 || true
+
+# --------------------------------------------------
+# Environment
+# --------------------------------------------------
+
+docker exec "$CONTAINER" env \
+    > "$OUTDIR/container-env.txt" 2>&1 || true
+
+# --------------------------------------------------
+# Host information
+# --------------------------------------------------
+
+{
+    echo "=== HOST ==="
+
+    if command -v lsb_release >/dev/null 2>&1; then
+        lsb_release -a
+    fi
+
+    uname -a
+
+    echo
+    echo "=== DOCKER ==="
+    docker --version
+
+} > "$OUTDIR/host.txt" 2>&1
+
+PROGRAMS=(
+        "yt-dlp"
+        "ffmpeg"
+        "ffprobe"
+        "node"
+        "npm"
+        "python"
+        "python3"
+        "java"
+        "curl"
+        "wget"
+        "git"
+    )
+
+# --------------------------------------------------
+# Common program versions
+# --------------------------------------------------
+
+{
+    echo "=== PROGRAM VERSIONS ==="
+    echo
+
+    for prog in "${PROGRAMS[@]}"; do
+        echo "----- $prog -----"
+
+        if docker exec "$CONTAINER" sh -c "command -v '$prog'" \
+                >/dev/null 2>&1; then
+
+            docker exec "$CONTAINER" sh -c "
+                $prog --version 2>/dev/null ||
+                $prog -version  2>/dev/null ||
+                $prog -V        2>/dev/null ||
+                true
+            " | head -n 5
+
+        else
+            echo "not installed"
+        fi
+
+        echo
+    done
+
+} > "$OUTDIR/versions.txt" 2>&1
+
+# --------------------------------------------------
+# Compose snippet
+# --------------------------------------------------
+
+if [ -n "$COMPOSE_FILE" ] && [ -f "$COMPOSE_FILE" ]; then
+
+    SERVICE=$(docker inspect "$CONTAINER" \
+        --format '{{ index .Config.Labels "com.docker.compose.service" }}' \
+        2>/dev/null)
+
+    if [ -n "$SERVICE" ]; then
+        yq ".services.\"$SERVICE\"" "$COMPOSE_FILE" \
+            > "$OUTDIR/compose-service.yaml" 2>&1 || true
+    fi
+fi
+
+# --------------------------------------------------
+# Summary
+# --------------------------------------------------
+
+{
+    echo "================================="
+    echo "Debug Summary"
+    echo "================================="
+    echo
+
+    echo "Container:"
+    echo "  $CONTAINER"
+    echo
+
+    echo "Image:"
+    cat "$OUTDIR/image.txt" 2>/dev/null
+    echo
+
+    echo "Host:"
+    uname -a
+    lsb_release -a
+    docker --version
+    echo
+
+    echo "Compose Service:"
+
+    docker inspect "$CONTAINER" \
+        --format '{{ index .Config.Labels "com.docker.compose.service" }}' \
+        2>/dev/null || echo "unknown"
+
+    if [ -n "$SERVICE" ]; then
+        echo "Docker Compose Config"
+        yq ".services.\"$SERVICE\"" "$COMPOSE_FILE"
+    fi
+    echo
+    echo "Programs found:"
+
+    for prog in "${PROGRAMS[@]}"; do
+        if docker exec "$CONTAINER" sh -c "command -v '$prog'" \
+            >/dev/null 2>&1; then
+            echo "$prog: $(
+                            $prog --version 2>/dev/null ||
+                            $prog -version 2>/dev/null ||
+                            $prog -V 2>/dev/null ||
+                            true
+                        )" | head -n1
+        fi
+    done
+
+} | tee "$OUTDIR/summary.txt"
+
+# --------------------------------------------------
+# Archive
+# --------------------------------------------------
+
+ARCHIVE="${OUTDIR}.tar.gz"
+
+tar czf "$ARCHIVE" \
+    -C "$(dirname "$OUTDIR")" \
+    "$(basename "$OUTDIR")"
+
+echo
+echo "[OK] Debug report created:"
+echo "$ARCHIVE"
+
+echo
+ls -lh "$ARCHIVE"