Ansible snippets: Difference between revisions
From DWIKI
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=Lineinfile= | =Lineinfile= | ||
*[https://docs.ansible.com/ansible/latest/collections/ansible/builtin/lineinfile_module.html | *[https://docs.ansible.com/ansible/latest/collections/ansible/builtin/lineinfile_module.html Lineinfile documentation] | ||
==Quoting fun with lineinfile regex== | ==Quoting fun with lineinfile regex== | ||
| Line 52: | Line 52: | ||
regexp: '^(foo.*)' | regexp: '^(foo.*)' | ||
line: '# \1' | line: '# \1' | ||
==Check for string in file== | |||
- name: Check for rotate setting | |||
lineinfile: | |||
path: "{{ rotatepath }}" | |||
regex: '^ *rotate 180$' | |||
state: absent | |||
register: result | |||
- debug: msg="{{ inventory_hostname }} {{ result.found }}" | |||
=Files= | =Files= | ||
Latest revision as of 16:29, 18 March 2024
Systemd
Randomize timer
Create /var/ansible/files/systemd/fstrim.conf
[Timer] RandomizedDelaySec=3h
Playbook:
tasks:
- name: check if /etc/systemd/system/fstrim.timer.d/ exists
stat:
path: /etc/systemd/system/fstrim.timer.d/
register: override_dir
- name: create /etc/systemd/system/fstrim.timer.d/
file:
path: /etc/systemd/system/fstrim.timer.d/
state: directory
when: override_dir.stat.exists == False
- name: add fstrim.timer override
copy:
src: /var/ansible/files/systemd/fstrim.conf
dest: /etc/systemd/system/fstrim.timer.d/override.conf
notify: daemon-reload
handlers:
- name: daemon-reload
systemd:
daemon_reload: yes
Lineinfile
Quoting fun with lineinfile regex
- name: fix the needrestart config
lineinfile:
dest: /etc/needrestart/needrestart.conf
state: present
regexp: '^#\$nrconf{restart}'
line: '$nrconf{restart} = ''a'''
when: ansible_distribution == 'Ubuntu' and ansible_distribution_major_version == '22'
Comment out a line
- name: comment out a line
lineinfile:
dest: /etc/needrestart/needrestart.conf
state: present
backrefs: true
regexp: '^(foo.*)'
line: '# \1'
Check for string in file
- name: Check for rotate setting
lineinfile:
path: "Template:Rotatepath"
regex: '^ *rotate 180$'
state: absent
register: result
- debug: msg="Template:Inventory hostname Template:Result.found"
Files
Check if a file exists
- name: check for a file
stat:
path: /etc/fstab
register: fstab
- name: print message if exists
ansible.builtin.debug:
msg: "File /etc/fstab exists"
when: fstab.stat.exists
Check if a command exists
- name: check if mysqld is installed
shell: which mysqld > /dev/null 2>&1
ignore_errors: true
changed_when: false
register: mysqld
failed_when: mysqld.rc == 2
