如何使用ansible替换文件中的特定行？

Question

I want to use ansible to go to the nignx configuration file and and replace the ssl_certificate line with my own. This is the line in nginx.conf

ssl_certificate "/etc/pki/nginx/server.crt";

All I want to know is what module and how do I use it to replace the path of the certificate to what I want.

Answer 1

Try below

- name: modify
  replace:
    path=/path/to/nginx.conf
    regexp="^(ssl_certificate\s+)[^\n]+$"
    replace="ssl_certificate \"/required/file/path/here\";"

Answer 2

To replace a particular line in a file using ansible you can use the lineinfile_module

- name: Replace a localhost entry with our own
  lineinfile:
    path: nginx.conf
    regexp: '^    ssl_certificate "/etc/pki/nginx/server.crt";'
    line: '    ssl_certificate "/your/path/server.crt";'

In my example I get this diff

<     ssl_certificate "/etc/pki/nginx/server.crt";
---
>     ssl_certificate "/your/path/server.crt";

But consider using the ansible role for NGINX .