Installing ansible on Centos 6

h3. Installing ansible on Centos 6

h5. ansible  dependencies

* python-babel
* PyYAML    
* python-crypto      
* python-jinja2      
* python-paramiko
* python-simplejson.x86_64 - on all nodes ( if python is lower version than 2.5 )

{code}
[root@tiber07vm1 ansible]# ansible --version
ansible 1.1
{code}


h5. Control Machine (master ) Requirements :

Currently Ansible can be from any machine with Python 2.6 installed

[root@tiber07vm1 download]# python -V
Python 2.6.6


h5. Managed Node Requirements
On the managed nodes, you only need Python 2.4 or later, but if you are are running less than Python 2.5 on the remotes, you will also need:

h5. Inventory of manged hosts:

Inventory of manged hosts will be at /etc/ansible/hosts

{code}
[root@tiber07vm1 ansible]# cat /etc/ansible/hosts
[local]
tiber07vm1

[remote]
tiber07vm3

[all:children]
local
remote

{code}

h5. First run :

{code}
[root@tiber07vm1 ansible]# ansible remote1  -a "uptime" --ask-pass
SSH password:
tiber07vm4 | success | rc=0 >>
 23:27:18 up 20 days, 11:05,  0 users,  load average: 0.00, 0.00, 0.00

{code}

h5. SSH trust : since you want pass wordless authentication from your master machine ,its advisable to establish a trust

{code}

ssh-copy-id tiber07vm1

ssh-copy-id tiber07vm3

{code}

h5. Sample run :

{code}

[root@tiber07vm1 ansible]# ansible local -a "uptime"
tiber07vm1 | success | rc=0 >>
 23:32:56 up 20 days, 11:10,  1 user,  load average: 0.04, 0.02, 0.00

[root@tiber07vm1 ansible]# ansible remote  -a "uptime"
tiber07vm3 | success | rc=0 >>
 23:33:01 up 20 days, 11:10,  0 users,  load average: 0.04, 0.02, 0.00

[root@tiber07vm1 ansible]# ansible all -a "uptime"
tiber07vm1 | success | rc=0 >>
 23:33:06 up 20 days, 11:11,  1 user,  load average: 0.03, 0.02, 0.00

tiber07vm3 | success | rc=0 >>
 23:33:07 up 20 days, 11:11,  0 users,  load average: 0.03, 0.02, 0.00


{code}