On Wed, 2 Sep 2020 22:43:42 -0700 (PDT) harsh chawda <[email protected]> wrote:
> *hosts*
> [windows]
> Server01.test.com ansible_user="admin" ansible_password="password"
> Server02.test.com ansible_user="admin" ansible_password="Welcome"
>
> *password.csv*
> Server01.test.com passwordNew
> Server02.test.com WelcomeNew
>
> how to compare and change the values in the existing host file.
Use "read_csv" to read the data. For example
- read_csv:
path: password.csv
delimiter: ' '
fieldnames: [host, passwd]
register: my_db
- debug:
var: my_db.list
There are more options to replace the passwords. Edit the host file
(1,2), create new host file from a template 93), or create new group
dynamically (4).
1) Module "replace", which might the first choice, seems to have an
issue #47917. The parameter "after' doesn't work as expected.
https://github.com/ansible/ansible/issues/47917#issuecomment-686339762
For example, the parameter "after" doesn't match the section
"[windows]" in the task below. If you remove the "after" parameter
the task works fine. If there are more sections (groups) with the
same hosts all passwords will be replaced not only the passwords in
the section [windows]
- replace:
path: hosts
after: '^\[windows\]$'
regexp: '^{{ item.host }}(.*)ansible_password=(.*)$'
replace: '{{ item.host }}\1ansible_password="{{ item.passwd
}}"'
loop: "{{ my_db.list }}"
2) Module "lineinfile" works as expected, but also here it's not
possible to select a section of the file
- lineinfile:
path: hosts
regexp: '^{{ item.host }}(.*)ansible_password=(.*)$'
line: '{{ item.host }}\1ansible_password="{{ item.passwd }}"'
loop: "{{ my_db.list }}"
3) The only save option seems to be "template", but you'll have to
keep all data of the hosts in a data structure. Either a list or a
dictionary.
4) There is one more option. Create new group of hosts in the first
play dynamically and use it in the second play. For example, the
playbook below
- hosts: localhost
tasks:
- read_csv:
path: password.csv
delimiter: ' '
fieldnames: [host, passwd]
register: my_db
- add_host:
groups:
- my_windows
hostname: "{{ item.host }}"
ansible_user: admin
ansible_password: "{{ item.passwd }}"
loop: "{{ my_db.list }}"
- hosts: my_windows
gather_facts: false
tasks:
- debug:
var: ansible_password
gives (abridged)
TASK [debug] ****
ok: [Server01.test.com] => {
"ansible_password": "passwordNew"
}
ok: [Server02.test.com] => {
"ansible_password": "WelcomeNew"
}
--
Vladimir Botka
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