Ansible

From DWIKI
⧼monobook-jumptonavigation⧽⧼monobook-jumptosearch⧽

Configuration management

Links

Tools

Docs

Some terms

Inventories

Alternatives

Quickstart

On server as root create key:

ssh-keygen

(go for defaults) and then get content of ~/.ssh/id_rsa.pub in your copypastebuffer

On 'clients' edit /etc/ssh/sshd_config to

PermitRootLogin without-password

and restart sshd

Edit/create ~root/.ssh/authorized_keys and add:

from="ip.of.ansible.server" <paste public key here>

Scripts/playbooks

Maintain useraccounts

 ---

 - name: remove users
  user: name=exuser state=absent force=yes groups=''
  with_dict: accounts
  tags:
    - delusers

 - name: sync group
  group:
    name: sync
    gid: 999
    state: "present"

 - name: fix homedir rights
  lineinfile: dest=/etc/login.defs regexp=^UMASK line="UMASK 007"

 - name: useraccounts
  user:
    name: "{{ item.key }}"
    comment: "{{ item.value.name }}"
    uid: "{{ item.value.uid }}"
    state: "present"
    shell: "/bin/bash"
    groups: sudo
  with_dict: accounts
  tags:
    - accounts

 - name: userpasswords
  user:
    name: "{{ item.key }}"
    password: "{{ lookup('csvfile',item.key + ' file=/etc/shadow delimiter=: col=1' ) }}"
  with_dict: accounts

#ssh keys
 - name: userkeys
  authorized_key: user={{ item.key }} key="{{ lookup('file','/home/' + item.key + '/.ssh/authorized_keys' ) }}" exclusive=yes
  with_dict: accounts
  tags:
    - keys

 - name: nofoobar
  user: name=foobar state=absent remove=yes
  tags:
    - foobar
 

FAQ

roles for multiple distributions

 include_vars with "distro-Template:Ansible distro name.yml"

Escape single quote

'foo bar '

Ad-hoc commands

http://docs.ansible.com/ansible/latest/intro_adhoc.html

check python code

ansible-test sanity --test pep8 mycode.py

Command/shell output on single line

ANSIBLE_STDOUT_CALLBACK=oneline ansible-playbook foo.yml

Storing passwords

http://docs.ansible.com/ansible/2.4/vault.html

Show all host variables

ansible -m setup <hostname>

Show all OS/versions

ansible all -m setup -a "filter=ansible_distribution*"

Syntax highlighting for ansible

Drop the files in ~/vim/bundle and in .vimrc:

call pathogen#infect()
call pathogen#helptags()

Or maybe better:

Retry

--limit @/home/ansible/ssh.retry

ERROR! this task 'import_playbook' has extra params

meh


/usr/bin/chattr: Clearing extent flag not supported

Probably trying to make a backup of a symlink

Escape curly braces

{{ '{' }}

Check file for string

 tasks:
   - name: grep line
     shell: "grep -q swap /etc/fstab"
     failed_when: false
     register: grepped
   - name: show grep
     debug:
       msg: "exists"
     when: grepped.rc == 0

Tips & tricks

Includes only when on host group

  - block:
    - include: foo.yml 
    - include: bar.yml
  when: "'foobar' in group_names"

Show info/facts of a host

ansible somehost -m setup


Show distribution and version

 - name: show some host info
   debug:
     msg: Dist Template:Ansible distribution Template:Ansible distribution version