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88 lines
2.4 KiB
Text
88 lines
2.4 KiB
Text
---
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title: About the etc_hosts Resource
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platform: linux
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---
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# etc_hosts
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Use the `etc_hosts` InSpec audit resource to test rules set to match IP addresses with hostnames.
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<br>
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## Availability
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### Installation
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This resource is distributed along with InSpec itself. You can use it automatically.
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### Version
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This resource first became available in v1.37.6 of InSpec.
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## Syntax
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An etc/hosts rule specifies an IP address and what its hostname is along with optional aliases it can have.
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<br>
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## Syntax
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Use the `.where` clause to match a property to one or more rules in the hosts file:
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describe etc_hosts.where { ip_address == 'value' } do
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its('primary_name') { should cmp 'hostname' }
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its('all_host_names') { should cmp 'list' }
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end
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Use the optional resource parameter to give an alternative path to the hosts file:
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describe etc_hosts('path/to/hosts').where { ip_address == 'value' } do
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its('primary_name') { should cmp 'hostname' }
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its('all_host_names') { should cmp 'list' }
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end
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where
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* `ip_address` is the ip address of the hostname in either ipv4 or ipv6 format.
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* `primary_name` is the name associated with the ip address.
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* `all_host_names` is a list including the primary_name as the first entry followed by any alias names the host has.
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<br>
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## Properties
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'ip_address', 'primary_name', 'all_host_names'
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<br>
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## Property Examples
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### ip_address
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`ip_address` returns a string array of ip addresses specified in the etc/hosts file.
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describe etc_hosts.where { primary_name == 'localhost' } do
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its('ip_address') { should cmp '127.0.1.154' }
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end
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### primary_name
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`primary_name` returns a string array of primary_names specified in the etc/hosts file.
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describe etc_hosts.where { ip_address == '::1' } do
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its('primary_name') { should cmp 'localhost' }
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end
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### all\_host_names
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`all_host_names` returns a two dimensional string array where each entry has the primary_name first followed by any aliases.
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describe etc_hosts.where { ip_address == '127.0.1.154' } do
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its('all_host_names') { should eq [['localhost', 'localhost.localdomain', 'localhost4', 'localhost4.localdomain4'], ['localhost', 'localhost.localdomain', 'localhost6', 'localhost6.localdomain6']] }
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end
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<br>
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## Matchers
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For a full list of available matchers, please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
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