增加sys/debug 部署测试；agent dev/user/instance元信息提取优化；sys/tests 优化 (#26)

Reviewed-on: #26
Reviewed-by: xuxt <xuxt@zgclab.edu.cn>
Reviewed-by: huhy <husteryezi@163.com>
Reviewed-by: sundapeng <sundp@mail.zgclab.edu.cn>

src/sys/debug/scripts/04_verify_dns_routing.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# shellcheck source=common.sh
+source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common.sh"
+
+ensure_env_file
+ensure_paths_defined
+
+service_id() {
+  compose ps -q "$1"
+}
+
+log "Verifying DNS routing via bind"
+
+MASTER_FILE="$SYS_DEBUG_PRIVATE_CORE/argus/etc/master.argus.com"
+if [[ ! -f "$MASTER_FILE" ]]; then
+  echo "[ERR] master.argus.com file missing at $MASTER_FILE" >&2
+  exit 1
+fi
+MASTER_IP_HOST="$(tr -d '\r\n' < "$MASTER_FILE" || true)"
+log "master.argus.com file content: $MASTER_IP_HOST"
+
+BIN_ID="$(service_id bind)"
+if [[ -n "$BIN_ID" ]]; then
+  DIG_IP="$(docker exec "$BIN_ID" dig +short master.argus.com A | tail -n1 || true)"
+  log "dig(master.argus.com) from bind container -> $DIG_IP"
+  if [[ -z "$DIG_IP" ]]; then
+    echo "[ERR] bind did not resolve master.argus.com" >&2
+    exit 1
+  fi
+else
+  echo "[WARN] bind container not found; skip dig" >&2
+fi
+
+for node in node-a node-b; do
+  CID="$(service_id "$node")"
+  if [[ -z "$CID" ]]; then
+    echo "[ERR] Container for $node not found" >&2
+    exit 1
+  fi
+  log "Checking resolution inside $node"
+  if ! docker exec "$CID" getent hosts master.argus.com >/dev/null 2>&1; then
+    echo "[ERR] $node cannot resolve master.argus.com" >&2
+    exit 1
+  fi
+  RES="$(docker exec "$CID" getent hosts master.argus.com | awk '{print $1}' | head -n1)"
+  log "$node resolved master.argus.com -> $RES"
+done
+
+log "DNS routing verified"