In recent Ansible update to 1.5 version there is really nice feature ssh pipelining. This option is serious alternative to accelerated mode.
Just add to you config file (ex. ~/.ansible.cfg):
[ssh_connection] pipelining=True
Now run any playbook – you will see the difference 🙂
Source (and extended info about):
http://blog.ansibleworks.com/2014/01/15/ssh-connection-upgrades-coming-in-ansible-1-5/
I was configuring GlusterFS on few servers using Ansible and have a need to update /etc/hosts with hostnames for easier configuration. I found this one working:
- name: Update /etc/hosts
lineinfile: dest=/etc/hosts regexp='.*{{item}}$' line='{{hostvars.{{item}}.ansible_default_ipv4.address}} {{item}}' state=present
with_items: '{{groups.somegroup}}'
Update – that doesn’t work in Ansible version 2.x, you have to use this:
- name: Update /etc/hosts from inventory
lineinfile: dest=/etc/hosts regexp='.*{{item}}$' line='{{hostvars[item].ansible_default_ipv4.address}} {{item}}' state=present
with_items: '{{groups.all}}'
tags:
- hosts
Source:
http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html