Bug 5707 - [Anolis23 GA][RC2][x86/arm] docker镜像没有dmesg命令:"dmesg": executable file not found in $PATH: unknown
Summary: [Anolis23 GA][RC2][x86/arm] docker镜像没有dmesg命令:"dmesg": executable file not fo...
Status: RESOLVED WONTFIX
Alias: None
Product: Anolis OS 23
Classification: Anolis OS
Component: BaseOS Modules (show other bugs) BaseOS Modules
Version: 23.0
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: happy_orange
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Reported: 2023-06-30 19:54 UTC by liuyaqing
Modified: 2023-07-05 19:45 UTC (History)
1 user (show)

See Also:

Attachments
anolis8 docker执行截图 (520.17 KB, image/png)
2023-06-30 20:05 UTC, huangcong 		Details
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Description liuyaqing alibaba_cloud_group 2023-06-30 19:54:35 UTC 
Description of problem:
使用docker镜像cloud-native-sig-registry.cn-hangzhou.cr.aliyuncs.com/openanolis/anolisos:23创建docker容器,在容器执行dmesg -l warn -T,没有dmesg命令:OCI runtime exec failed: exec failed: unable to start container process: exec: "dmesg": executable file not found in $PATH: unknown

Steps to Reproduce:
1.yum install -y yum-utils && yum install docker -y --enablerepo=Plus && systemctl  start docker

2.docker pull cloud-native-sig-registry.cn-hangzhou.cr.aliyuncs.com/openanolis/anolisos:23

3.docker image ls && docker run -dit --privileged=true -v /home:/home cloud-native-sig-registry.cn-hangzhou.cr.aliyuncs.com/openanolis/anolisos:23

4.docker exec docker-id dmesg -l warn -T

Actual results:
docker镜像没有dmesg命令

Expected results:
docker经常有dmesg命令,并且正常执行dmesg -l warn -T和dmesg -l err -T

Additional info:
Comment 1 huangcong 2023-06-30 20:05:22 UTC 
Created attachment 820 [details]
anolis8 docker执行截图
Comment 2 huangcong 2023-06-30 20:06:12 UTC 
anolis8 docker上是执行可以通过的
Comment 3 happy_orange alibaba_cloud_group 2023-07-05 19:45:46 UTC 
结论：建议在 docker 环境中直接安装 util-linux-core 后在进行使用。

原因：dmesg 命令不在 docker 默认的范围内的，docker 制作是通过声明需要的包列表进行制作生成。Anolis OS 8 和 Anolis OS 23 的 docker.ks 文件中声明的包范围是相同的，这个结果的差异是由于两个版本的依赖关系有变更导致的。
具体原因如下：

Anolis OS 8 里面有 dmesg 的原因：
dmesg 在 Anolis OS 8 中由 util-linux 提供。glibc-minimal-langpack 在需要安装的列表范围内，然后 glibc-minimal-langpack 安装依赖 glibc，而 glibc 依赖了 util-linux。导致 dmesg 被引入。

[root@iZbp1duxh1y47uucrbr0qyZ ~]# rpm -qf /usr/bin/dmesg
util-linux-2.32.1-35.0.1.an8.aarch64
[root@iZbp1duxh1y47uucrbr0qyZ ~]# yum repoquery --requires glibc | grep util-linux
Failed to set locale, defaulting to C.UTF-8
Last metadata expiration check: 1:13:33 ago on Wed Jul  5 18:27:59 2023.
util-linux

Anolis OS 23 里没有 dmesg 的原因：
dmesg 在 Anolis OS 23 中是由 util-linux-core 提供。glibc-minimal-langpack 在需要安装的列表范围内，然后 glibc-minimal-langpack 安装不再依赖 glibc，所以 dmesg 不会被再次带入。
[root@iZbp11f2prmazn8pd90bduZ ~]# rpm -qf /usr/bin/dmesg
util-linux-core-2.38.1-1.an23.x86_64
[root@iZbp11f2prmazn8pd90bduZ ~]# yum repoquery --whatrequires util-linux-core
Last metadata expiration check: 0:53:22 ago on Wed 05 Jul 2023 06:31:37 PM CST.
resource-agents-0:4.12.0-1.an23.x86_64
systemd-0:252.4-6.an23.x86_64
util-linux-0:2.38.1-1.an23.x86_64