Installing Ansible:
[root@licvdo1000 ~]# yum install ansible
[root@licvdo1000 ~]# ansible --version
ansible 2.8.2
config file = /etc/ansible/ansible.cfg
configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.5 (default, Nov 1 2018, 03:12:47) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36.0.1)]
[root@licvdo1000 ~]#
[root@licvdo1000 ~]#
[root@licvdo1000 ~]#
[root@licvdo1000 ~]#
Ansible Version Check:
[root@licvdo1000 ~]# ansible-playbook --version
ansible-playbook 2.8.2
config file = /etc/ansible/ansible.cfg
configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /usr/bin/ansible-playbook
python version = 2.7.5 (default, Nov 1 2018, 03:12:47) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36.0.1)]
[root@licvdo1000 ~]# ansible-galaxy --version
ansible-galaxy 2.8.2
config file = /etc/ansible/ansible.cfg
configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /usr/bin/ansible-galaxy
python version = 2.7.5 (default, Nov 1 2018, 03:12:47) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36.0.1)]
Default Ansible Configuration:
[root@licvdo1000 ansible]# pwd
/etc/ansible
[root@licvdo1000 ansible]# more ansible.cfg
# config file for ansible -- https://ansible.com/
# ===============================================
# nearly all parameters can be overridden in ansible-playbook
# or with command line flags. ansible will read ANSIBLE_CONFIG,
# ansible.cfg in the current working directory, .ansible.cfg in
# the home directory or /etc/ansible/ansible.cfg, whichever it
# finds first
[defaults]
# some basic default values...
#inventory = /etc/ansible/hosts
#library = /usr/share/my_modules/
#module_utils = /usr/share/my_module_utils/
#remote_tmp = ~/.ansible/tmp
#local_tmp = ~/.ansible/tmp
#plugin_filters_cfg = /etc/ansible/plugin_filters.yml
#forks = 5
#poll_interval = 15
#sudo_user = root
#ask_sudo_pass = True
#ask_pass = True
#transport = smart
#remote_port = 22
#module_lang = C
#module_set_locale = False
[root@licvdo1000 ansible]# more hosts
# This is the default ansible 'hosts' file.
#
# It should live in /etc/ansible/hosts
#
# - Comments begin with the '#' character
# - Blank lines are ignored
# - Groups of hosts are delimited by [header] elements
# - You can enter hostnames or ip addresses
# - A hostname/ip can be a member of multiple groups
# Ex 1: Ungrouped hosts, specify before any group headers.
## green.example.com
## blue.example.com
## 192.168.100.1
## 192.168.100.10
# Ex 2: A collection of hosts belonging to the 'webservers' group
## [webservers]
## alpha.example.org
## beta.example.org
## 192.168.1.100
## 192.168.1.110
# If you have multiple hosts following a pattern you can specify
# them like this:
## www[001:006].example.com
Creating your own configuration:
[root@licvdo1000 ansible]# pwd
/home/f776xb6/ansible
[root@licvdo1000 ansible]# ll
total 8
-rw-r--r--. 1 root root 59 Aug 16 12:04 ansible.cfg
-rw-r--r--. 1 root root 71 Aug 16 12:30 hosts
[root@licvdo1000 ansible]#
[root@licvdo1000 ansible]# cat ansible.cfg
[defaults]
inventory = /home/f776xb6/ansible/hosts
[root@licvdo1000 ansible]# cat hosts
[testserver]
licvdo1001
[control]
licvdo1000 ansible_connection=local
[root@licvdo1000 ansible]#
Listing hosts from inventory and using wild characters:
[root@licvdo1000 ansible]# ansible --list-hosts all
hosts (2):
licvdo1000
licvdo1001
[root@licvdo1000 ansible]# ansible --list-hosts '*'
hosts (2):
licvdo1000
licvdo1001
[root@licvdo1000 ansible]# pwd
/home/f776xb6/ansible
[root@licvdo1000 ansible]# ansible --list-hosts testserver
hosts (1):
licvdo1001
[root@licvdo1000 ansible]# ansible --list-hosts licvdo1001
hosts (1):
licvdo1001
[root@licvdo1000 ansible]# ansible --list-hosts test*
hosts (1):
licvdo1001
[root@licvdo1000 ansible]# ansible --list-hosts testserver:control
hosts (2):
licvdo1001
licvdo1000
[root@licvdo1000 ansible]# ansible --list-hosts testserver,control
hosts (2):
licvdo1001
licvdo1000
[root@licvdo1000 ansible]# ansible --list-hosts testserver[1]
[WARNING]: No hosts matched, nothing to do
hosts (0):
[root@licvdo1000 ansible]# ansible --list-hosts testserver[0]
hosts (1):
licvdo1001
[root@licvdo1000 ansible]# ansible --list-hosts \!control
hosts (1):
licvdo1001
[root@licvdo1000 ansible]# ansible --list-hosts \!test*
hosts (1):
licvdo1000
[root@licvdo1000 ansible]#
Running Ad-hoc commands:
[root@licvdo1000 ansible]# ansible -m ping all
[WARNING]: Platform linux on host licvdo1000 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.8/reference_appendices/interpreter_discovery.html for more information.
licvdo1000 | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
[WARNING]: Platform linux on host licvdo1001 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.8/reference_appendices/interpreter_discovery.html for more information.
licvdo1001 | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
[root@licvdo1000 ansible]# ansible -m command -a "hostname" all
[WARNING]: Platform linux on host licvdo1000 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.8/reference_appendices/interpreter_discovery.html for more information.
licvdo1000 | CHANGED | rc=0 >>
licvdo1000
[WARNING]: Platform linux on host licvdo1001 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.8/reference_appendices/interpreter_discovery.html for more information.
licvdo1001 | CHANGED | rc=0 >>
licvdo1001
[root@licvdo1000 ansible]#
#### command is the default module ###############
[root@licvdo1000 ansible]# ansible -a "hostname" all
[WARNING]: Platform linux on host licvdo1000 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.8/reference_appendices/interpreter_discovery.html for more information.
licvdo1000 | CHANGED | rc=0 >>
licvdo1000
[WARNING]: Platform linux on host licvdo1001 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.8/reference_appendices/interpreter_discovery.html for more information.
licvdo1001 | CHANGED | rc=0 >>
licvdo1001
[root@licvdo1000 ansible]#
Writing and executing playbooks:
[root@licvdo1000 ansible]# cat hostname.yml
---
- hosts: all
tasks:
- name : get server hostname
command: hostname
[root@licvdo1000 ansible]# ansible-playbook hostname.yml
PLAY [all] ***************************************************************************************************************************************************
TASK [Gathering Facts] ***************************************************************************************************************************************
ok: [licvdo1000]
ok: [licvdo1001]
TASK [get server hostname] ***********************************************************************************************************************************
changed: [licvdo1000]
changed: [licvdo1001]
PLAY RECAP ***************************************************************************************************************************************************
licvdo1000 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
licvdo1001 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
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