CODEWITHSUNDEEP
ansible
user11549576
user11549576

Reputation: 159

trying to add an IP address to the end of the list in Ansible

I have written a playbook that will be adding a new IP address to the list of IP address. This is the code 

- name: adding IP to faile2ban
  lineinfile:
        path: /home/ec2-user/test.conf
        line: "{{ new_server_ip }}"
        insertafter: "^#?ip_list"

https://github.com/shettypriy/ansible/blob/master/addingIPto%20the%20end .The IP gets added to the file but it does not get added at the end of the last added IP

I have a file test.conf where IP address are added. I want to add the new IP after the last updated IP Example: following is the sample content of the file test.conf

ip_list = xx.xx.xx.xx yy.yy.yy.zz aa.aa.aa.aa

My desired output should be 'new_server_ip' added after aa.aa.aa.aa

Upvotes: 0

Views: 271

Answers (2)

Vladimir Botka
Vladimir Botka

Reputation: 67984

The task below does the job and is idempotent

"Modules should be idempotent, that is, running a module multiple times in a sequence should have the same effect as running it just once."

- lineinfile:
    dest: /home/ec2-user/test.conf
    regexp: '(?!.*{{ new_server_ip }}.*)^(ip_list.*)$'
    line: '\1 {{ new_server_ip }}'
    backrefs: yes

The regexp first look ahead and match the line only if new_server_ip is not present.

Upvotes: 1

Anton
Anton

Reputation: 111

I guess the following should work for you well:

- name: adding IP to faile2ban
  lineinfile:
    dest: /home/ec2-user/test.conf
    state: present
    regexp: "^(#?ip_list(.*)$)"
    backrefs: yes
    line: '\1 {{ new_server_ip }}'

So the point is that you find row started with 'ip_list', select whole line by the regexp and then backrefencing selected row in your line in front of new_server_ip.

Upvotes: 1

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