90b090b021
* adding OS9 ansible collections * adding OS9 collections Co-authored-by: Patil <Komal_uttamrao_Patil@Dell.com>
97 lines
5.1 KiB
Markdown
97 lines
5.1 KiB
Markdown
DNS role
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========
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This role facilitates the configuration of the domain name service (DNS). This role is abstracted for Dell EMC platforms running OS9 and requires an SSH connection for connectivity to a Dell EMC Networking device. You can use any of the built-in OS connection variables.
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Role variables
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--------------
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- Role is abstracted using the *ansible_network_os* variable that can take the dellemc.os9.os9 as a value
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- If *os9_cfg_generate* set to true, the variable generates the role configuration commands in a file
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- Any role variable with a corresponding state variable set to absent negates the configuration of that variable
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- Setting an empty value for any variable negates the corresponding configuration
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- Variables and values are case-sensitive
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**os9_dns keys**
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| Key | Type | Description | Support |
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|------------|---------------------------|---------------------------------------------------------|-----------------------|
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| ``name_server`` | list | Configures DNS (see ``name_server.*``) | os9 |
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| ``name_server.domain_lookup`` | boolean | Enables or disables domain name lookup | os9 |
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| ``name_server.ip`` | list | Configures the name server IP | os9 |
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| ``name_server.vrf`` | list | Configures VRF for each IP | os9 |
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| ``name_server.state`` | string: absent,present\* | Deletes the name server IP if set to absent | os9 |
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> **NOTE**: Asterisk (\*) denotes the default value if none is specified.
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Connection variables
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--------------------
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Ansible Dell EMC Networking roles require connection information to establish communication with the nodes in your inventory. This information can exist in the Ansible *group_vars* or *host_vars* directories or inventory, or in the playbook itself.
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| Key | Required | Choices | Description |
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|-------------|----------|------------|-----------------------------------------------------|
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| ``ansible_host`` | yes | | Specifies the hostname or address for connecting to the remote device over the specified transport |
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| ``ansible_port`` | no | | Specifies the port used to build the connection to the remote device; if value is unspecified, the ANSIBLE_REMOTE_PORT option is used; it defaults to 22 |
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| ``ansible_ssh_user`` | no | | Specifies the username that authenticates the CLI login for the connection to the remote device; if value is unspecified, the ANSIBLE_REMOTE_USER environment variable value is used |
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| ``ansible_ssh_pass`` | no | | Specifies the password that authenticates the connection to the remote device. |
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| ``ansible_become`` | no | yes, no\* | Instructs the module to enter privileged mode on the remote device before sending any commands; if value is unspecified, the ANSIBLE_BECOME environment variable value is used, and the device attempts to execute all commands in non-privileged mode |
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| ``ansible_become_method`` | no | enable, sudo\* | Instructs the module to allow the become method to be specified for handling privilege escalation; if value is unspecified, the ANSIBLE_BECOME_METHOD environment variable value is used. |
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| ``ansible_become_pass`` | no | | Specifies the password to use if required to enter privileged mode on the remote device; if ``ansible_become`` is set to no this key is not applicable. |
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| ``ansible_network_os`` | yes | os9, null\* | This value is used to load the correct terminal and cliconf plugins to communicate with the remote device. |
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> **NOTE**: Asterisk (\*) denotes the default value if none is specified.
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Dependencies
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------------
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The *os9_dns* role is built on modules included in the core Ansible code. These modules were added in Ansible version 2.2.0.
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Example playbook
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----------------
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This example uses the *os9_dns* role to completely set up the DNS server configuration. The example creates a *hosts* file with the switch details and corresponding variables. The hosts file should define the *ansible_network_os* variable with corresponding Dell EMC networking OS name.
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When *os9_cfg_generate* is set to true, generates the configuration commands as a .part file in *build_dir* path. By default it is set to false. It writes a simple playbook that only references the *os9_dns* role. By including the role, you automatically get access to all of the tasks to configure DNS.
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**Sample hosts file**
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leaf1 ansible_host= <ip_address>
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**Sample host_vars/leaf1**
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hostname: leaf1
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ansible_become: yes
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ansible_become_method: xxxxx
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ansible_become_pass: xxxxx
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ansible_ssh_user: xxxxx
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ansible_ssh_pass: xxxxx
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ansible_network_os: dellemc.os9.os9
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build_dir: ../temp/os9
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os9_dns:
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domain_lookup: true
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name_server:
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- ip:
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- 1.1.1.1
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- 1.1.1.2
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vrf:
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- test
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- management
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state: absent
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- ip:
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- 2.2.2.2
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- ip:
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- 3.3.2.2
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state: absent
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**Simple playbook to setup DNS - leaf.yaml**
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- hosts: leaf1
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roles:
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- dellemc.os9.os9_dns
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**Run**
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ansible-playbook -i hosts leaf.yaml
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(c) 2020 Dell Inc. or its subsidiaries. All Rights Reserved.
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