This is a small demonstration to perform an initial management of new installed Linux nodes using Ansible.
$ ansible -i staging all -m ping
$ ansible -i staging all -a "/bin/date"
$ ansible -i staging all -a "/bin/hostname"
$ ansible -i staging all -a "/bin/uptime"
$ ansible -i staging all -a "/bin/free -h"
$ ansible -i staging all -m shell -a "/bin/ps aux | /bin/grep chronyd"
$ ansible -i staging all -m yum -a "name=* state=latest"
$ ansible -i staging all -m setup$ ansible-playbook -i staging site.yml
$ ansible-playbook -i staging common.yml
$ ansible-playbook -i staging playbooks/reboot_hosts.ymlproduction # inventory file for production servers
staging # inventory file for staging environment
group_vars/
all.yml # here we assign variables to all groups
group1.yml # here we assign variables to particular groups
group2.yml
host_vars/
hostname1.yml # here we assign variables to particular systems
hostname2.yml
library/ # if any custom modules, put them here (optional)
module_utils/ # if any custom module_utils to support modules, put them here (optional)
filter_plugins/ # if any custom filter plugins, put them here (optional)
site.yml # master playbook
webservers.yml # playbook for webserver tier
dbservers.yml # playbook for dbserver tier
roles/
common/ # this hierarchy represents a "role"
tasks/
main.yml # <-- tasks file can include smaller files if warranted
handlers/
main.yml # <-- handlers file
templates/ # <-- files for use with the template resource
ntp.conf.j2 # <-- templates end in .j2
files/
bar.txt # <-- files for use with the copy resource
foo.sh # <-- script files for use with the script resource
vars/
main.yml # <-- variables associated with this role
defaults/ #
main.yml # <-- default lower priority variables for this role
meta/ #
main.yml # <-- role dependencies
library/ # roles can also include custom modules
module_utils/ # roles can also include custom module_utils
lookup_plugins/ # or other types of plugins, like lookup in this case
webserver/ # same kind of structure as "common" was above, done for the webserver role
dbserver/ # same kind of structure as "common" was above, done for the dbserver role
fooapp/ # same kind of structure as "common" was above, done for the fooapp role