16.3. 管理集中式 OSTree 镜像

流程

1. 创建一个空蓝图，对其定制为使用 "rhel-92" 作为发行版：

   name = "minimal-rhel92"
   description = "minimal blueprint for ostree commit"
   version = "1.0.0"
   modules = []
   groups = []
   distro = "rhel-92"

2. 将蓝图推送到服务器：

   # composer-cli blueprints push minimal-rhel92.toml

3. 从您创建的蓝图中构建 RHEL for Edge Commit (.tar)镜像：

   # composer-cli compose start-ostree minimal-rhel92 edge-commit

4. 检索 .tar criule ，并将其解压缩到磁盘：

   # composer-cli compose image _<rhel-92-uuid>
   $ tar -xf <rhel-92-uuid>.tar -C /usr/share/nginx/html/

   磁盘上的 /usr/share/nginx/html/repo 位置将成为所有 refs 和 commit 的一个 OSTree 存储库。

5. 创建另一个空蓝图，对其定制为使用 "rhel-87" 作为 发行版：

   name = "minimal-rhel87"
   description = "minimal blueprint for ostree commit"
   version = "1.0.0"
   modules = []
   groups = []
   distro = "rhel-87"

6. 推送蓝图，并创建另一个 RHEL for Edge Commit (.tar)镜像：

   # composer-cli blueprints push minimal-rhel87.toml
   # composer-cli compose start-ostree minimal-rhel87 edge-commit

7. 检索 .tar criule ，并将其解压缩到磁盘：

   # composer-cli compose image <rhel-87-uuid>
   $ tar -xf <rhel-87-uuid>.tar

8. 将提交拉取到本地存储库。通过使用 ostree pull-local，您可以将提交数据从一个本地存储库复制到另一个本地存储库。

   # ostree --repo=/usr/share/nginx/html/repo pull-local repo

9. 可选：检查 OSTree 存储库的状态。以下是一个输出示例：

   $ ostree --repo=/usr/share/nginx/html/repo refs
   
   rhel/8/x86_64/edge
   rhel/9/x86_64/edge
   
   $ ostree --repo=/usr/share/nginx/html/repo show rhel/8/x86_64/edge
   commit f7d4d95465fbd875f6358141f39d0c573df6a321627bafde68c73850667e5443
   ContentChecksum:  41bf2f8b442a770e9bf03e096a46a286f5836e0a0702b7c3516ef4e0acec2dea
   Date:  2023-09-15 16:17:04 +0000
   Version: 8.7
   (no subject)
   
   $ ostree --repo=/usr/share/nginx/html/repo show rhel/9/x86_64/edge
   commit 89290dbfd6f749700c77cbc434c121432defb0c1c367532368eee170d9e53ea9
   ContentChecksum:  70235bfb9cae82c53f856183750e809becf0b9b076122b19c40fec92fc6d74c1
   Date:  2023-09-15 15:30:24 +0000
   Version: 9.2
   (no subject)

10. 更新 RHEL 9.2 蓝图，以使其包含新软件包并构建新提交，例如：

    name = "minimal-rhel92"
    description = "minimal blueprint for ostree commit"
    version = "1.1.0"
    modules = []
    groups = []
    distro = "rhel-92"
    
    [[packages]]
    name = "strace"
    version = "*"

11. 推送更新的蓝图并创建一个新的 RHEL for Edge Commit (.tar)镜像，将 compose 指向现有的 OSTree 存储库：

    # composer-cli blueprints push minimal-rhel92.toml
    # composer-cli compose start-ostree minimal-rhel92 edge-commit --url http://localhost/repo --ref rhel/9/x86_64/edge

12. 检索 .tar 文件，并将其解压缩到磁盘上：

    # rm -rf repo
    # composer-cli compose image <rhel-92-uuid>
    # tar -xf <rhel-92-uuid>.tar

13. 将提交拉取到存储库：

    # ostree --repo=/usr/share/nginx/html/repo pull-local repo

14. 可选：再次检查 OSTree 存储库状态：

    $ ostree --repo=/usr/share/nginx/html/repo refs
    rhel/8/x86_64/edge
    rhel/9/x86_64/edge
    
    $ ostree --repo=/usr/share/nginx/html/repo show rhel/8/x86_64/edge
    commit f7d4d95465fbd875f6358141f39d0c573df6a321627bafde68c73850667e5443
    ContentChecksum:  41bf2f8b442a770e9bf03e096a46a286f5836e0a0702b7c3516ef4e0acec2dea
    Date:  2023-09-15 16:17:04 +0000
    Version: 8.7
    (no subject)
    
    $ ostree --repo=/usr/share/nginx/html/repo show rhel/9/x86_64/edge
    commit a35c3b1a9e731622f32396bb1aa84c73b16bd9b9b423e09d72efaca11b0411c9
    Parent:  89290dbfd6f749700c77cbc434c121432defb0c1c367532368eee170d9e53ea9
    ContentChecksum:  2335930df6551bf7808e49f8b35c45e3aa2a11a6c84d988623fd3f36df42a1f1
    Date:  2023-09-15 18:21:31 +0000
    Version: 9.2
    (no subject)
    
    $ ostree --repo=/usr/share/nginx/html/repo log rhel/9/x86_64/edge
    commit a35c3b1a9e731622f32396bb1aa84c73b16bd9b9b423e09d72efaca11b0411c9
    Parent:  89290dbfd6f749700c77cbc434c121432defb0c1c367532368eee170d9e53ea9
    ContentChecksum:  2335930df6551bf7808e49f8b35c45e3aa2a11a6c84d988623fd3f36df42a1f1
    Date:  2023-09-15 18:21:31 +0000
    Version: 9.2
    (no subject)
    
    commit 89290dbfd6f749700c77cbc434c121432defb0c1c367532368eee170d9e53ea9
    ContentChecksum:  70235bfb9cae82c53f856183750e809becf0b9b076122b19c40fec92fc6d74c1
    Date:  2023-09-15 15:30:24 +0000
    Version: 9.2
    (no subject)
    
    $ rpm-ostree db diff --repo=/usr/share/nginx/html/repo 89290dbfd6f749700c77cbc434c121432defb0c1c367532368eee170d9e53ea9 a35c3b1a9e731622f32396bb1aa84c73b16bd9b9b423e09d72efaca11b0411c9
    ostree diff commit from: 89290dbfd6f749700c77cbc434c121432defb0c1c367532368eee170d9e53ea9
    ostree diff commit to:   a35c3b1a9e731622f32396bb1aa84c73b16bd9b9b423e09d72efaca11b0411c9
    Added:
      elfutils-default-yama-scope-0.188-3.el9.noarch
      elfutils-libs-0.188-3.el9.x86_64
      strace-5.18-2.el9.x86_64