CODEWITHSUNDEEP
ansible
Santosh Kulkarni
Santosh Kulkarni

Reputation: 21

ansible-playbook unable to use regex

I am using ansible version 2.7. I was practicing a task where I have to add users whose username and uid stored in var file named /home/automation/plays/vars/user_list.yml and password for the same is stored in secrets.yml having correct content. I am also able to add user from it with with_item but with next requirement of task I need to add users whose uid stats with 1* on specified hostgroup which is called with "group_names" i was trying match regex for the same but getting error

My requirement is add a user whose udi begins with ^1 to hostgroup "webserver"

I have used with explict uids such 1201 / 1201 which is working but not working with regex 

- hosts: all
  become: yes
  gather_facts: no
  vars_files:
     - /home/automation/plays/vars/user_list.yml    
     - secrets.yml
  tasks:
     - debug:
         msg: "{{users | type_debug}},{{user_password}}"
       with_items: "{{ users }}"  
     - name: Adding Users to webserver groupwith List
       user:
        name: "{{item.username}}"
        uid:   "{{item.uid}}"
        state: absent
        remove: yes  
        password: "{{ user_password }}" 
        shell: /bin/bash
        groups: wheel
        generate_ssh_key: yes
        ssh_key_bits: 2048
        ssh_key_file: .ssh/id_rsa
       when:  item.uid  is regex("1.*")
       with_items: "{{users}}"  

fatal: [ansnode_1]: FAILED! => {"msg": "The conditional check 'item.uid  is regex(\"1.*\")' failed. The error was: Unexpected templating type error occurred on ({% if item.uid  is regex(\"1.*\") %} True {% else %} False {% endif %}): expected string or buffer\n\nThe error appears to have been in '/home/automation/plays/users.yml': line 12, column 8, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n       with_items: \"{{ users }}\"\n     - name: Adding Users to webserver groupwith List\n       ^ here\n"}
fatal: [ansnode_4]: FAILED! => {"msg": "The conditional check 'item.uid  is regex(\"1.*\")' failed. The error was: Unexpected templating type error occurred on ({% if item.uid  is regex(\"1.*\") %} True {% else %} False {% endif %}): expected string or buffer\n\nThe error appears to have been in '/home/automation/plays/users.yml': line 12, column 8, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n       with_items: \"{{ users }}\"\n     - name: Adding Users to webserver groupwith List\n       ^ here\n"}
fatal: [ansnode_2]: FAILED! => {"msg": "The conditional check 'item.uid  is regex(\"1.*\")' failed. The error was: Unexpected templating type error occurred on ({% if item.uid  is regex(\"1.*\") %} True {% else %} False {% endif %}): expected string or buffer\n\nThe error appears to have been in '/home/automation/plays/users.yml': line 12, column 8, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n       with_items: \"{{ users }}\"\n     - name: Adding Users to webserver groupwith List\n       ^ here\n"}
fatal: [ansnode_3]: FAILED! => {"msg": "The conditional check 'item.uid  is regex(\"1.*\")' failed. The error was: Unexpected templating type error occurred on ({% if item.uid  is regex(\"1.*\") %} True {% else %} False {% endif %}): expected string or buffer\n\nThe error appears to have been in '/home/automation/plays/users.yml': line 12, column 8, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n       with_items: \"{{ users }}\"\n     - name: Adding Users to webserver groupwith List\n       ^ here\n"}

Upvotes: 1

Views: 2662

Answers (3)

Vladimir Botka
Vladimir Botka

Reputation: 68074

Let's assume the users have already been created and "the requirement is to add users whose uid begins with '1' to group 'webserver'".

The task below does the job

    - name: Adding users to webserver group
      user:
        name: "{{ item.username }}"
        groups: webserver
      loop: "{{ users }}"
      when:  item.uid|string|first == '1'

Regex

  1. The condition below is an equivalent
      when: item.uid|string is match('^1.*$')
  1. To match the user "where userid ends with 5" use
      when: item.uid|string is match('^.*5$')

Upvotes: 2

Alberto Vidal Alegria
Alberto Vidal Alegria

Reputation: 1

With this task.

tasks:
- name: Create users
  user:
    name: "{{ item.username }}"
    group: wheel
    password: "{{ user_password | password_hash('sha512') }}"
    shell: /bin/bash
    update_password: on_create
  with_items: "{{ users }}"
  when:
    - ansible_fqdn in groups['webservers']
    - "item.uid|string|first == '1'"

Upvotes: 0

KevinLH
KevinLH

Reputation: 338

In the official documentation for Ansible 2.7, there is no reference to the regex filter. It appears only in the documentation for Ansible 2.8, so I assume it is a new addition of that version.

According to that same documentation, regex("1.*") will not match the UIDs starting with "1", but all the UIDs containing "1". You will want to use match("1.*") instead, that should work with your version of Ansible.

Upvotes: 0

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