Merge Append two files into single file and ensure no duplicate entries are found using Ansible

Question

I have two files /etc/hosts1 and /etc/hosts2. i need to merge these two files into one file /etc/hosts.

/etc/hosts should have all the contents of /etc/hosts1 and /etc/hosts2 without duplicate entries..

The playbook is expected to be idempotent.

Answer 1

Hi@Jp,

You need to create your own customized scripts. According to your use case, the below playbook may help you.

- hosts: localhost
  gather_facts: no
  tasks:
  - name: Assemble from fragments from a directory
    assemble:
      src: file/
      dest: Mergedfile
  - name: Find uniqe entries
    shell: cat Mergedfile | sort -u | uniq -u > hosts

Comments

Could you help with the same examples

file1: /etc/hosts1 file2: /etc/hosts2 needs to be merged as /etc/hosts

---

Hi@Jp,

Do one thing, create a folder sya Myfolder and cp your hosts files inside this folder. And your ultimate goal is you need a final hosts file inside /etc folder. So modify the above code as shown above.

- hosts: localhost
  gather_facts: no
  tasks:
  - name: Assemble from fragments from a directory
    assemble:
      src: Myfolder/
      dest: Mergedfile
  - name: Find uniqe entries
    shell: cat Mergedfile | sort -u | uniq -u > /etc/hosts