eos_command - Run arbitrary commands on an Arista EOS device¶

New in version 2.1.

Synopsis
Parameters
Notes
Examples
Return Values
Status
- Support
- Author

Synopsis ¶

Sends an arbitrary set of commands to an EOS node and returns the results read from the device. This module includes an argument that will cause the module to wait for a specific condition before returning or timing out if the condition is not met.

Parameters ¶

Parameter	Choices/Defaults	Comments
auth_pass		Deprecated Starting with Ansible 2.5 we recommend using `connection: network_cli` and `become: yes` with `become_pass`. This option is only required if you are using eAPI. For more information please see the EOS Platform Options guide. Specifies the password to use if required to enter privileged mode on the remote device. If authorize is false, then this argument does nothing. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_AUTH_PASS` will be used instead.
authorize	Choices: no ← yes	Deprecated Starting with Ansible 2.5 we recommend using `connection: network_cli` and `become: yes`. This option is only required if you are using eAPI. For more information please see the EOS Platform Options guide. Instructs the module to enter privileged mode on the remote device before sending any commands. If not specified, the device will attempt to execute all commands in non-privileged mode. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_AUTHORIZE` will be used instead.
commands required		The commands to send to the remote EOS device over the configured provider. The resulting output from the command is returned. If the wait_for argument is provided, the module is not returned until the condition is satisfied or the number of retries has been exceeded.
interval	Default: yes	Configures the interval in seconds to wait between retries of the command. If the command does not pass the specified conditional, the interval indicates how to long to wait before trying the command again.
match (added in 2.2)	Choices: any all ←	The match argument is used in conjunction with the wait_for argument to specify the match policy. Valid values are `all` or `any`. If the value is set to `all` then all conditionals in the wait_for must be satisfied. If the value is set to `any` then only one of the values must be satisfied.
provider		Deprecated Starting with Ansible 2.5 we recommend using `connection: network_cli`. This option is only required if you are using eAPI. For more information please see the EOS Platform Options guide. A dict object containing connection details.
username		Configures the username to use to authenticate the connection to the remote device. This value is used to authenticate either the CLI login or the eAPI authentication depending on which transport is used. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_USERNAME` will be used instead.
authorize	Choices: no ← yes	Instructs the module to enter privileged mode on the remote device before sending any commands. If not specified, the device will attempt to execute all commands in non-privileged mode. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_AUTHORIZE` will be used instead.
ssh_keyfile		Specifies the SSH keyfile to use to authenticate the connection to the remote device. This argument is only used for cli transports. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_SSH_KEYFILE` will be used instead.
use_proxy (added in 2.5)	Choices: no yes ←	If `no`, the environment variables `http_proxy` and `https_proxy` will be ignored.
auth_pass		Specifies the password to use if required to enter privileged mode on the remote device. If authorize is false, then this argument does nothing. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_AUTH_PASS` will be used instead.
host required		Specifies the DNS host name or address for connecting to the remote device over the specified transport. The value of host is used as the destination address for the transport.
timeout	Default: 10	Specifies the timeout in seconds for communicating with the network device for either connecting or sending commands. If the timeout is exceeded before the operation is completed, the module will error.
use_ssl	Choices: no yes ←	Configures the transport to use SSL if set to true only when the `transport=eapi`. If the transport argument is not eapi, this value is ignored.
password		Specifies the password to use to authenticate the connection to the remote device. This is a common argument used for either cli or eapi transports. If the value is not specified in the task, the value of environment variable `ANSIBLE_NET_PASSWORD` will be used instead.
validate_certs	Choices: no yes	If `no`, SSL certificates will not be validated. This should only be used on personally controlled sites using self-signed certificates. If the transport argument is not eapi, this value is ignored.
port	Default: 0 (use common port)	Specifies the port to use when building the connection to the remote device. This value applies to either cli or eapi. The port value will default to the appropriate transport common port if none is provided in the task. (cli=22, http=80, https=443).
transport required	Choices: eapi cli ←	Configures the transport connection to use when connecting to the remote device.
retries	Default: 10	Specifies the number of retries a command should be tried before it is considered failed. The command is run on the target device every retry and evaluated against the wait_for conditionals.
wait_for (added in 2.2)		Specifies what to evaluate from the output of the command and what conditionals to apply. This argument will cause the task to wait for a particular conditional to be true before moving forward. If the conditional is not true by the configured retries, the task fails. Note - With wait_for the value in `result['stdout']` can be accessed using `result`, that is to access `result['stdout'][0]` use `result[0]` See examples. aliases: waitfor

Notes ¶

Note

Tested against EOS 4.15
For information on using CLI, eAPI and privileged mode see the EOS Platform Options guide
For more information on using Ansible to manage network devices see the Ansible Network Guide
For more information on using Ansible to manage Arista EOS devices see the Arista integration page.

Examples ¶

- name: run show version on remote devices
  eos_command:
    commands: show version

- name: run show version and check to see if output contains Arista
  eos_command:
    commands: show version
    wait_for: result[0] contains Arista

- name: run multiple commands on remote nodes
  eos_command:
    commands:
      - show version
      - show interfaces

- name: run multiple commands and evaluate the output
  eos_command:
    commands:
      - show version
      - show interfaces
    wait_for:
      - result[0] contains Arista
      - result[1] contains Loopback0

- name: run commands and specify the output format
  eos_command:
    commands:
      - command: show version
        output: json

- name: using cli transport, check whether the switch is in maintenance mode
  eos_command:
    commands: show maintenance
    wait_for: result[0] contains 'Under Maintenance'

- name: using cli transport, check whether the switch is in maintenance mode using json output
  eos_command:
    commands: show maintenance | json
    wait_for: result[0].units.System.state eq 'underMaintenance'

- name: "using eapi transport check whether the switch is in maintenance,
         with 8 retries and 2 second interval between retries"
  eos_command:
    commands: show maintenance
    wait_for: result[0]['units']['System']['state'] eq 'underMaintenance'
    interval: 2
    retries: 8
    provider:
      transport: eapi

Return Values ¶

Common return values are documented here, the following are the fields unique to this module:

Key	Returned	Description
failed_conditions list	failed	The list of conditionals that have failed Sample: ['...', '...']
stdout list	always apart from low level errors (such as action plugin)	The set of responses from the commands Sample: ['...', '...']
stdout_lines list	always apart from low level errors (such as action plugin)	The value of stdout split into a list Sample: [['...', '...'], ['...'], ['...']]

Status ¶

This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

Support ¶

For more information about Red Hat’s support of this module, please refer to this Knowledge Base article

Author ¶

Peter Sprygada (@privateip)

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