Contents
How do I get a list of hosts in ansible?
You can use the option –list-hosts. It will show all the host IPs from your inventory file.
Where is the ansible hosts file?
/etc/ansible/hosts
The default location for the inventory file is /etc/ansible/hosts. You can also create project-specific inventory files in alternate locations. The inventory file can list individual hosts or user-defined groups of hosts.
What are hosts in ansible?
Ansible uses a combination of a hosts file and a group_vars directory to pull variables per host group and run Ansible plays/tasks against hosts. group_vars/all is used to set variables that will be used for every host that Ansible is ran against.
How do I make an ansible host file?
You can create an inventory file in Ansible anywhere you like. It is just a text file which by default is called hosts and located in /etc/ansible/ but you can create the file wherever you like and just tell Ansible where it is when you run the playbook either with the -i switch or by defining it in the ansible.
What is the default Forks value in configuration file?
By default, Ansible sets the number of forks to 5. However, you can increase the number of forks used in order to improve deployment performance in large environments. Note that more than 10 forks will cause issues for any playbooks which use delegate_to or local_action in the tasks.
What is the default location for Ansible?
The default location for inventory is a file called /etc/ansible/hosts . You can specify a different inventory file at the command line using the -i option.
How to access host variable in Ansible playbook?
hostvars is a hash with inventory hostnames as keys. To access fields of each host, use hostvars [‘test-1’], hostvars [‘test2-1’], etc. ansible_ssh_host is deprecated in favor of ansible_host since 2.0.
Which is the most common pattern in Ansible?
Common patterns ¶ Description Pattern (s) All hosts all (or *) One host host1 Multiple hosts host1:host2 (or host1,host2) One group webservers
What do the patterns mean in Ansible ad hoc?
Since you often want to run a command or playbook against multiple hosts at once, patterns often refer to inventory groups. Both the ad hoc command and the playbook above will execute against all machines in the webservers group. This table lists common patterns for targeting inventory hosts and groups.
What does retry files do in Ansible playbook?
If RETRY_FILES_ENABLED is set to True, a .retry file will be created after the ansible-playbook run containing a list of failed hosts from all plays. This file is overwritten each time ansible-playbook finishes running.