【测试类型：工具功能】【测试版本：5.1.0】【自动化】数据库卸载后，/sys/fs/cgroup/cpu下的组用户未清理掉

【标题描述】:数据库卸载后，/sys/fs/cgroup/cpu下的组用户未清理掉
【测试类型：工具功能】【测试版本：5.1.0】 问题描述：数据库卸载后，/sys/fs/cgroup/cpu下的组用户未清理掉

【操作系统和硬件信息】(查询命令: cat /etc/system-release, uname -a):
CentOS Linux release 7.6.1908 (Core)
Linux kwemhisprc01300 3.10.0-1062.el7.x86_64 #1 SMP Wed Aug 7 18:08:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

【测试环境】(单机/1主x备x级联备):
单机

【被测功能】:
数据库卸载

【测试类型】:
功能测试

【数据库版本】(查询命令: gaussdb -V):
gaussdb (openGauss 5.1.0 build ca597900) compiled at 2023-07-13 00:11:35 commit 0 last mr

【预置条件】:
数据库状态正常
【操作步骤】(请填写详细的操作步骤):
1. om方式安装数据库成功
Configuration is completed.
The cluster status is Normal.
Successfully started cluster.
Successfully installed application.
end deploy..

2. 路径/sys/fs/cgroup/cpu下查看
drwxr-xr-x  4 lhjtest1  lhjtest1  0 Jul 13 20:02 Gaussdb:lhjtest1
![输入图片说明](https://foruda.gitee.com/images/1689252144289529838/a2cd6ece_10825457.png "屏幕截图")
3. 卸载数据库
gs_uninstall --delete-data
Checking uninstallation.
Successfully checked uninstallation.
Stopping the cluster.
Successfully stopped the cluster.
Successfully deleted instances.
Uninstalling application.
Successfully uninstalled application.
Uninstallation succeeded.

./gs_postuninstall -U lhjtest1 -X /data4/lhjtest1/gauss.xml --delete-user --delete-group
Parsing the configuration file.
Successfully parsed the configuration file.
Check log file path.
Successfully checked log file path.
Checking unpreinstallation.
Successfully checked unpreinstallation.
Deleting the instance's directory.
Successfully deleted the instance's directory.
Deleting the temporary directory.
Successfully deleted the temporary directory.
Deleting software packages and environmental variables of the local node.
Successfully deleted software packages and environmental variables of the local nodes.
Deleting local OS user.
Successfully deleted local OS user.
Deleting local node's logs.
Successfully deleted local node's logs.
Successfully cleaned environment.

4. /sys/fs/cgroup/cpu路径下查看
![输入图片说明](https://foruda.gitee.com/images/1689252224489788621/b0cd60ca_10825457.png "屏幕截图")

【预期输出】:
Gaussdb:lhjtest1被删除

【实际输出】:
Gaussdb:lhjtest1 未删除
![输入图片说明](https://foruda.gitee.com/images/1689252273499829602/1e5a0197_10825457.png "屏幕截图")
【原因分析】:
1. 这个问题的根因
2. 问题推断过程
3. 还有哪些原因可能造成类似现象
4. 该问题是否有临时规避措施
5. 问题解决方案
6. 预计修复问题时间

【日志信息】(请附上日志文件、截图、coredump信息):

【测试代码】:

openGauss/openGauss-OM

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