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

高级别 1人工审核cockroachdb

说明

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.

检查方式

审计方法: 人工审核

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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).

修复方式

修复方法: 操作指南或基础设施补丁

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;

属性

操作系统: 任意
标签: cockroachdbtime
参考: CIS CockroachDB v25.x Benchmark v1.0.0 - 2.1 Ensure Network Time Protocol (NTP) Service Is Configured for Cluster Clock Synchronization