Is there with_fileglob that works remotely in ansi

问题:

Is there with_fileglob that works remotely in ansible?

Mainly I do want to use something similar with the with_fileglob but that will glob the files on the remote/target machine, not on the one that is running ansible.

回答1:

All of the with_* looping mechanisms are local lookups unfortunately so there's no really clean way to do this in Ansible. Remote operations by design must be enclosed in tasks as it would need to deal with connections and inventory etc.

What you can do is generate your fileglob by shelling out to the host and then registering the output and looping over the stdout_lines part of the output.

So a trivial example may be something like this:

- name    : get files in /path/
  shell   : ls /path/*
  register: path_files

- name: fetch these back to the local Ansible host for backup purposes
  fetch:
    src : /path/"{{item}}"
    dest: /path/to/backups/
  with_items: "{{ path_files.stdout_lines }}"

This would connect to the remote host (e.g., host.example.com), get all the file names under /path/ and then copy them back to the Ansible host to the path: /path/host.example.com/.

回答2:

Use find module to filter the files and then process the resulting list:

- name: Get files on remote machine
  find:
    paths: /path/on/remote
  register: my_find

- debug:
    var: item.path
  with_items: "{{ my_find.files }}"

回答3:

Using ls /path/* didn't work for me, so here's an example that uses find and some simple regex to delete all nginx managed virtual hosts:

- name: get all managed vhosts
  shell: find /etc/nginx/sites-enabled/ -type f -name \*-managed.conf
  register: nginx_managed_virtual_hosts

- name: delete all managed nginx virtual hosts
  file:
    path: "{{ item }}"
    state: absent
  with_items: "{{ nginx_managed_virtual_hosts.stdout_lines }}"

You could use it to find all files with a specific extension or any other mix. For instance to simply get all files in a directory: find /etc/nginx/sites-enabled/ -type f.