Has anyone faced the following issue with "{{ ansible_hostname }}"
while calling in a playbook task directly?
Please suggest if there is other way around to do it or if I'm doing anything wrong here, I have tried it with both lineinfile
& replace
module:
---
- name: Playbook to Install CollectD
hosts: servercast01
gather_facts: False
remote_user: root
become: true
tasks:
- name: Replacing hostname entry
lineinfile:
dest: "/tmp/collectd/etc/collectd.conf"
regexp: '#Hostname "myvm01"'
line: 'Hostname "{{ ansible_hostname }}"'
2) With replace
module:
---
- name: Playbook to Install CollectD
hosts: servercast01
gather_facts: False
remote_user: root
become: true
tasks:
- name: Replacing hostname entry
replace:
dest: /tmp/collectd/etc/collectd.conf
regexp: '#Hostname "myvm01"'
replace: 'Hostname "{{ ansible_hostname }}"'
backup: yes
Below is the error while executing the playbook..
fatal: [servercast01]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'ansible_hostname' is undefined\n\nThe error appears to have been in '/etc/ansible/lineinfile3.yml': line 10, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n tasks:\n - name: Replacing hostname entry\n ^ here\n"}
ansible_hostname
is a fact and you have explicitly disabled gathering facts (gather_facts: False
), so it's not defined.
Remove the line.