From 49f159a8cebe1f60980a2204e4bbaab3ec6fa19a Mon Sep 17 00:00:00 2001
From: Nexus Agent <nexus@local>
Date: Sat, 6 Jun 2026 22:38:43 +0800
Subject: [PATCH] =?UTF-8?q?fix(deploy):=20install=5Fops=5Fcron=20=E8=87=AA?=
 =?UTF-8?q?=E5=8A=A8=E5=AE=89=E8=A3=85=20cron=20=E5=8C=85?=
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生产 Azure 主机默认无 crontab，安装脚本现会 apt install cron 并启用服务。

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 deploy/install_ops_cron.sh                    | 23 +++++++++++++++++++
 ...god-menu-audit-round4-mysql-backup-cron.md |  1 +
 2 files changed, 24 insertions(+)

diff --git a/deploy/install_ops_cron.sh b/deploy/install_ops_cron.sh
index e46d3486..8246d482 100644
--- a/deploy/install_ops_cron.sh
+++ b/deploy/install_ops_cron.sh
@@ -26,6 +26,29 @@ if [[ "$(id -u)" -ne 0 ]]; then
     exit 1
 fi
 
+ensure_crontab() {
+    if command -v crontab >/dev/null 2>&1; then
+        return 0
+    fi
+    warn "未检测到 crontab，尝试安装 cron 包…"
+    if command -v apt-get >/dev/null 2>&1; then
+        export DEBIAN_FRONTEND=noninteractive
+        apt-get update -qq
+        apt-get install -y -qq cron
+        systemctl enable --now cron 2>/dev/null || systemctl enable --now crond 2>/dev/null || true
+    elif command -v yum >/dev/null 2>&1; then
+        yum install -y cronie
+        systemctl enable --now crond 2>/dev/null || true
+    fi
+    if ! command -v crontab >/dev/null 2>&1; then
+        error "无法安装 crontab（请手动: apt install cron）"
+        exit 1
+    fi
+    info "cron 已安装"
+}
+
+ensure_crontab
+
 for f in "${DEPLOY_DIR}/health_monitor.sh" "${DEPLOY_DIR}/db_backup.sh"; do
     if [[ ! -f "$f" ]]; then
         error "缺少脚本: $f"
diff --git a/docs/changelog/2026-06-06-nx-god-menu-audit-round4-mysql-backup-cron.md b/docs/changelog/2026-06-06-nx-god-menu-audit-round4-mysql-backup-cron.md
index 93656bcd..7ecb5a38 100644
--- a/docs/changelog/2026-06-06-nx-god-menu-audit-round4-mysql-backup-cron.md
+++ b/docs/changelog/2026-06-06-nx-god-menu-audit-round4-mysql-backup-cron.md
@@ -12,6 +12,7 @@
 3. **db_backup.sh**：Docker 生产路径，从 Nexus 容器/volume 解析 `NEXUS_DATABASE_URL`，默认 `/var/backups/nexus`。
 4. **install_ops_cron.sh**（新）：幂等写入 `health_monitor`（每分钟）与 `db_backup`（每日 03:00）crontab。
 5. **nx**：菜单 `[e]` / 子命令 `nx cron` 安装上述 cron。
+6. **install_ops_cron**：宿主机无 `crontab` 时自动 `apt install cron` 并启用服务。
 
 ## 涉及文件