/etc/ansible/hosts

/etc/ansible/hosts, text configuration file for managed nodes, or inventory in Ansible terminology, in INI or YAML format.

• https://docs.ansible.com/ansible/latest/inventory_guide/intro_inventory.html

Examples

Defining specific user for some group of hosts:

[my_new_group]
myhost1
myhost1
myhost3
myhost4  ansible_user=OTHER_USENAME

[my_new_group:vars]
ansible_user=sysadm

[all:vars]
ansible_ssh_pass

Remote execution examples

ansible -i ~/brew/etc/ansible -m shell your-group-of-server -a uptime

Activities

• Read how to build a dynamic inventory: https://docs.ansible.com/ansible/latest/user_guide/intro_dynamic_inventory.html#intro-dynamic-inventory

Default /etc/ansible/hosts in Ubuntu

cat /etc/ansible/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

# Ex 3: A collection of database servers in the 'dbservers' group

#[dbservers]
#
#db01.intranet.mydomain.net
#db02.intranet.mydomain.net
#10.25.1.56
#10.25.1.57

# Here's another example of host ranges, this time there are no
# leading 0s:

#db-[99:101]-node.example.com

Related terms

• /etc/ansible/ansible.cfg
• /etc/hosts
• ansible-inventory --list
• ansible HOSTNAME -m ping
• ansible -m ping
• skipping: no hosts matched
• ansible-config list

See also

• Ansible: modules, plugins, Playbooks (examples) ansible-playbook, ansible-vault, ansible-inventory, ansible-config, Ansible Tower, Ansible Galaxy (Roles) (ansible-galaxy), ansible-cmdb, gather facts, ansible.cfg, Ansible Molecule, Ansible collections, register, template, --ask-pass, --ask-become-pass, remote_user:, /etc/ansible/hosts, ansible-doc, ansible-lint, .ansible/, --forks, --start-at-task, changelog, inventory, Notify:, ansible HOSTNAME -m ping, gathering, /usr/bin/ansible, ansible -m ping, ansible.builtin, hosts: (Ansible), set fact:, when:, blockinfile:, become method:, include:, git:, AWX, ansible --help, Tags, Ansible variables, versions

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