Ensure Network Time Protocol (NTP) Service Is Configured for Cluster Clock Synchronization

高レベル 1手動レビューcockroachdb

説明

CockroachDB requires moderate levels of clock synchronization to preserve data consistency. When a node detects that its clock is out of sync with at least half of the other nodes in the cluster by 80% of the maximum offset allowed (500 ms by default), it will spontaneously shut down to avoid consistency anomalies.

チェック方法

監査方法: 手動レビュー

この推奨事項は自動ではチェックできません。--include-manual を指定すると、スキャン結果にこの手順付きで一覧表示されます。

On each node confirm exactly one clock-sync service (chronyd, ntpd, or the cloud provider time source) is enabled and running (systemctl status chronyd, timedatectl, chronyc sources -v). All nodes must use compatible leap-smearing sources, and offsets must stay well within --max-offset (default 500ms).

修正方法

修正方法: ガイダンスまたは IaC パッチ

Key requirements: - Run one clock sync service (NTP/chrony or provider's built-in time source) on each node. - Use compatible, leap-smearing time sources across all nodes. 1. Install and enable a time sync service (per environment): - AWS EC2: Configure each instance to use Amazon Time Sync Service via 169.254.169.123, verify via chronyc sources -v. - GCE: use GCE's internal NTP via metadata.google.internal;

プロパティ

オペレーティングシステム: すべて
タグ: cockroachdbtime
参照: CIS CockroachDB v25.x Benchmark v1.0.0 - 2.1 Ensure Network Time Protocol (NTP) Service Is Configured for Cluster Clock Synchronization