选择一个OB节点作为执行节点 clockdiff ，分别带入OB集群各个主机，看下时间同步延迟看看。

image1506×399 107 KB

执行下
clockdiff 172.28.104.165
clockdiff 172.28.104.173
clockdiff 172.28.104.168

大佬，165机器是ob节点也是作为ntp服务端

这个时差还是有点大的。obd内部判断是小于500ms
换个时钟源或者
修改obd的文件
vim /usr/obd/plugins/oceanbase-ce/x.x.x.x/start_check.py和
vim ~/.obd/plugins/oceanbase-ce/x.x.x.x/start_check.py
中的 if times and max(times) - min(times) > 500 修改为 1500 （注意这里的阈值示例 1500 单位是毫秒，需要满足小于2秒 且 大于当前的时钟偏差的值）。

你使用的ntp同步还是 chrony ？ 可以参考这个案例试试， 使用obd命令起动ob集群报错：[ERROR] Cluster NTP is out of sync - 社区问答- OceanBase社区-分布式数据库

obd执行命令应该有trace，可以看下trace的内容。 另外有办法绕过去（可能影响集群功能）
如何绕过 obd 对于时钟偏差的限制-OceanBase数据库使用指南

好的，谢谢大佬

学习，需要配置时钟源 chrony或者NTP

目录没有start_check.py文件，只有start_check_pre.py，且文件内容没有关于时间的配置

obd版本是多少 推荐更新到最新版

期待答案

cron同步时间呢

学习

我这几天也遇到了这个问题。启动集群报错，600ms估计也超了。但是没找调大时间差的文件。

[root@obd01 4.0.0.0]# clockdiff 192.168.56.150
…
host=192.168.56.150 rtt=562(280)ms/0ms delta=-600ms/-600ms Fri Jan 9 10:27:43 2026

目录也没发现start_check.py文件，只有start_check_pre.py，且文件内容没有关于时间的配置

obd cluster start ocp_1 报错日志：
[2026-01-09 09:24:04.276] [DEBUG] – 192.168.56.150 time delta -581.622802734375
[2026-01-09 09:24:04.277] [ERROR] [ERROR] oceanbase-ce-py_script_resource_check-4.0.0.0 RuntimeError: cannot access local variable ‘server’ where it is not associated with a value
[2026-01-09 09:24:04.277] [ERROR] Traceback (most recent call last):
[2026-01-09 09:24:04.277] [ERROR] File “core.py”, line 2376, in start_cluster
[2026-01-09 09:24:04.277] [ERROR] File “core.py”, line 2429, in _start_cluster
[2026-01-09 09:24:04.277] [ERROR] File “core.py”, line 263, in run_workflow
[2026-01-09 09:24:04.277] [ERROR] File “core.py”, line 305, in run_plugin_template
[2026-01-09 09:24:04.277] [ERROR] File “core.py”, line 354, in call_plugin
[2026-01-09 09:24:04.277] [ERROR] File “_plugin.py”, line 348, in call
[2026-01-09 09:24:04.277] [ERROR] File “_plugin.py”, line 304, in _new_func
[2026-01-09 09:24:04.277] [ERROR] File “/home/admin/.obd/plugins/oceanbase-ce/4.0.0.0/resource_check.py”, line 252, in resource_check
[2026-01-09 09:24:04.277] [ERROR] critical(server, ‘ntp’, err.EC_OBSERVER_TIME_OUT_OF_SYNC.format(), [err.SUG_OBSERVER_TIME_OUT_OF_SYNC.format()])
[2026-01-09 09:24:04.277] [ERROR] ^^^^^^
[2026-01-09 09:24:04.277] [ERROR] UnboundLocalError: cannot access local variable ‘server’ where it is not associated with a value
[2026-01-09 09:24:04.277] [ERROR]
[2026-01-09 09:24:04.277] [DEBUG] - sub resource_check ref count to 0
[2026-01-09 09:24:04.277] [DEBUG] - export resource_check
[2026-01-09 09:24:04.277] [DEBUG] - plugin oceanbase-ce-py_script_resource_check-4.0.0.0 result: False
[2026-01-09 09:24:04.281] [INFO] Trace ID: e1e83c5c-ecf9-11f0-ac5b-000c29a1a8c4
[2026-01-09 09:24:04.281] [INFO] If you want to view detailed obd logs, please run: obd display-trace e1e83c5c-ecf9-11f0-ac5b-000c29a1a8c4

谁知道具体怎么解决？

[admin@obd01 ~]$ obd --version
OceanBase Deploy: 4.0.0
REVISION: 44b780d08efba6de1ce19e6d4a67631eba4cff24
BUILD_BRANCH: HEAD
BUILD_TIME: Nov 17 2025 14:36:56OURCE
Copyright (C) 2025 OceanBase
License Apache 2.0: Apache version 2 or later https://www.apache.org/licenses/LICENSE-2.0.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
[admin@obd01 ~]$

把 ntp 重启下，确保 ntp 服务能正常同步时间，追平延迟就可以了

我用的是chrony，重启过了。

image1440×192 9.51 KB

[root@obd02 ~]#
[root@obd02 ~]# clockdiff 192.168.56.149
.
host=192.168.56.149 rtt=750(187)ms/0ms delta=600ms/600ms Fri Jan 9 14:39:50 2026
[root@obd02 ~]#
[root@obd02 ~]#

我的obd是4.0.0，也没有找到
vim /usr/obd/plugins/oceanbase-ce/x.x.x.x/start_check.py

和

vim ~/.obd/plugins/oceanbase-ce/x.x.x.x/start_check.py

[admin@obd01 ~]$ obd --version
OceanBase Deploy: 4.0.0
REVISION: 44b780d08efba6de1ce19e6d4a67631eba4cff24
BUILD_BRANCH: HEAD
BUILD_TIME: Nov 17 2025 14:36:56OURCE
Copyright (C) 2025 OceanBase
License Apache 2.0: Apache version 2 or later https://www.apache.org/licenses/LICENSE-2.0.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
[admin@obd01 ~]$