红帽全球峰会3.3. 检查 NTP 服务器同步
OpenShift Container Platform 安装程序在集群节点上安装 chrony 网络时间协议(NTP)服务。要完成安装，每个节点都必须有权访问 NTP 时间服务器。您可以使用 chrony 服务验证 NTP 服务器同步。
对于断开连接的集群，您必须在 control plane 节点上配置 NTP 服务器。如需更多信息，请参阅附加资源部分。
先决条件
-
在目标节点上安装了
chrony软件包。
流程
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使用
ssh命令登录节点。 运行以下命令，查看节点可用的 NTP 服务器：
$ chronyc sources输出示例
MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^+ time.cloudflare.com 3 10 377 187 -209us[ -209us] +/- 32ms ^+ t1.time.ir2.yahoo.com 2 10 377 185 -4382us[-4382us] +/- 23ms ^+ time.cloudflare.com 3 10 377 198 -996us[-1220us] +/- 33ms ^* brenbox.westnet.ie 1 10 377 193 -9538us[-9761us] +/- 24ms使用
ping命令确保节点可以访问 NTP 服务器，例如：$ ping time.cloudflare.com输出示例
PING time.cloudflare.com (162.159.200.123) 56(84) bytes of data. 64 bytes from time.cloudflare.com (162.159.200.123): icmp_seq=1 ttl=54 time=32.3 ms 64 bytes from time.cloudflare.com (162.159.200.123): icmp_seq=2 ttl=54 time=30.9 ms 64 bytes from time.cloudflare.com (162.159.200.123): icmp_seq=3 ttl=54 time=36.7 ms ...
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