如何判断 ansible unarchive 模块创建了哪个目录？

Question

我正在编写一个 ansible 剧本来自动安装一个软件。当我从网站下载 tarball 时，我有：

software-package-release.tar.gz

解压后剩下目录

software-package-v2.15/

ansible 是否有任何方法可以注册作为 unarchive 模块的一部分创建的目录？

我试过以下剧本（我把 nrpe-lkdsflkdjf 文件放在那里，其中包含一个目录 nrpe-2.15）

- name: Extract
  unarchive
    src:/tmp/nrpe-lkdsflkdjf
    dest: /tmp/
    copy: no
  register: tar_reg

- name: debug tar_reg
  debug: var=tar_reg

这是调试的输出：

ok: [IP-here] => {
    "tar_reg": {
        "changed": true, 
        "check_results": {
            "cmd": "/bin/gtar -C \"/tmp/\" --diff -f \"/tmp/nrpe-lkdsjflkdsjf\"", 
            "err": "/bin/gtar: nrpe-2.15: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/SECURITY: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/README.Solaris: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/init-script.debian.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/nrpe.spec.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/LEGAL: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/subst.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/sample-config: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/sample-config/nrpe.xinetd.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/sample-config/nrpe.cfg.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg/preinstall: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg/nrpe.xml: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg/i.config: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg/postinstall: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg/r.config: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/pkg/nrpe: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/package/solaris/Makefile.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/nrpe.spec: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/README: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src/acl.c: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src/check_nrpe.c: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src/snprintf.c: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src/Makefile.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src/utils.c: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/src/nrpe.c: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/config.guess: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/install-sh: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/contrib: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/contrib/nrpe_check_control.c: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/contrib/README.nrpe_check_control: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/init-script.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/docs: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/docs/NRPE.pdf: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/docs/NRPE.odt: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/init-script.suse.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/configure: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/config.sub: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/Changelog: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/Makefile.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/README.SSL: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/configure.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/update-version: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include/dh.h: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include/common.h: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include/utils.h: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include/acl.h: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include/config.h.in: Warning: Cannot stat: No such file or directory\n/bin/gtar: nrpe-2.15/include/nrpe.h: Warning: Cannot stat: No such file or directory\n", 
            "out": "", 
            "rc": 1, 
            "unarchived": false
        }, 
        "dest": "/tmp/", 
        "extract_results": {
            "cmd": "/bin/gtar -xf \"/tmp/nrpe-lkdsjflkdsjf\"", 
            "err": "", 
            "out": "", 
            "rc": 0
        }, 
        "gid": 0, 
        "group": "root", 
        "handler": "TarArchive", 
        "mode": "01777", 
        "owner": "root", 
        "size": 3072, 
        "src": "/tmp/nrpe-lkdsjflkdsjf", 
        "state": "directory", 
        "uid": 0
    }
}

Answer 1

更新： 请参阅@vinayak-thatte 的以获取正确答案。

Unarchive 模块不知道存档中有什么——它只是将所有存档内容放入 dest 文件夹。

如果您事先知道存档中有或可能有一个文件夹，您可以像这样进行一些测试：

- name: Get dir 1 - fast - when you are sure that there is one and only one subfolder
  shell: tar tf file.tgz | head -1 | sed -e 's/\/.*//'
  changed_when: false
  register: tar_test

- debug: 'msg="Subfolder: {{tar_test.stdout}}"'

- name: Get dir 2 - slow - when you dont sure
  shell: tar tf file.tgz | sed -e 's/\/.*//' | sort | uniq
  changed_when: false
  register: tar_test

- debug: 'msg="Subfolder: {{tar_test.stdout}}"'
  when: tar_test.stdout_lines | count == 1

- debug: msg="No subfolder!"
  when: tar_test.stdout_lines | count > 1

第一种方法比第二种方法快，但它只检查一行存档文件列表——所以你必须确保里面只有一个子文件夹。
第二种方法检查存档中的所有路径并在存档中收集不同的名称 "root" - 因此如果只有一个匹配项（计数 == 1）它很可能是子文件夹（或存档中的单个文件：- /), 否则存档中有很多条目 "root".

Answer 2

unarchive module 确实可以选择列出文件 - list_files。输出可以注册，通常数组的第一个值是目录名。

以下对我有用：

- name: Extract files
  unarchive: 
    src: /tmp/my_archive.tar.gz
    dest: /mydir
    remote_src: yes
    list_files: yes
  register: archive_contents

archive_contents.files[0] 将有您的顶级目录。

如何判断 ansible unarchive 模块创建了哪个目录？

How to tell what directory was created by ansible's unarchive module?

tar

ansible

ansible-playbook