hosts file example

In the above example you can see I have grouped the devies into two groups denoted with square brackets. The Ansible hosts file is a file which lists all the hosts that you want to connect to. Example.

CCIE, Wireless, F5, Ansible, AWS, Cloud and data centre to Network Automation - my journey as a network engineer. Cube Operating System What is the hosts file? I’ve created a video –What is the host file? The domain name used is the NetBIOS name, not the FQDN. which covers the main points above. The host file is used to store connections for Anisble playbooks. The hosts file is still present on computer systems (windows,Linux, MAC), tablets (e.g. English / English e.g. Here is the basic default host file taken from my PC. Though it is not needed, adding the #PRE parameter or extension will load the entry into the local NetBIOS name cache when the computer boots. If DNS is configured on the host and client machines there should be no need of static text files for resolving names, but it does work well, and many folks uses them as a dependable simple solution. To make managing your hosts easier you can put them into groups within your inventory file. Hungarian / Magyar All options will be covered in this tutorial below. Most entries such as #PRE, #DOM, DOMAIN names and such are case sensitive. Log, Measure Levels There are options to define connection parameters: ansible_host is the hostname or IP address, ansible_port is the port the machine uses for SSH, ansible_user is the remote user to connect as, ansible_ssh_pass if using a password to SSH, ansible_ssh_private_key_file if you need to use multiple keys that are specific to hosts. Data Science Override addresses that your DNS server provides 5. For example quick access to a website like Google can be achieved adding an abbreviation like ‘G”, or your firewall with ‘F”, or I frequently uses it for accessing client sites with remote desktop using 3 letter acronyms such as ACL for Acme Corp Ltd. : Most of the rules that apply to the LMHosts file, apply to the Hosts file as well: 123.123.123.123 ftp.acme.com#company FTP site. I am CCIE #50038 and am a Network Automation envalgelist. Dimensional Modeling Ansible Network Automation Course - Currently only £29, https://docs.ansible.com/ansible/latest/user_guide/playbooks_best_practices.html, Open Source Network Automation Tools – My Top 7 List, 7 Best Python Network Automation Videos on YouTube, Keep your hosts file names simple – I always use hosts, Comment were required to ensure someone else can understand your inventory, Use children to address multiple groups at once. If you develop websites, setup local networks etc then you will find the hosts file very useful. Web Services You can also locate these inventory files anywhere on your device, in this example the inventory file is located in the same folder as the playbook. Security Data Quality For small environments, a static inventory file is sufficient as there are typically not rapid changes to the devices in use. The IP address should # be placed in the first column followed by the corresponding host name. The netbios name arises from the fact that early Microsoft networks used the netbios networking protocols which required all devices to a have a unique name. There are two types of inventory you can use within Ansible. However it is important to note the hosts file doesn’t have a file extension like .txt. Two types of lines are permitted: Empty Lines; Host name definitions; Lines may be intermingled as needed.

( Log Out /  Once notepad is open you can edit the file. The hosts file is a simple mapping of IP addresses and hostnames. Process Also there are two file types. Tree Croatian / Hrvatski Privacy Policy The safest method is to save the file using quotes, “lmhosts” to assure no extensions are added. Hosts can grouped into groups and also put into a super-set with the the :children operator.

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