Documentation

nxos_command - Run arbitrary command on Cisco NXOS devices

New in version 2.1.

Synopsis

  • Sends an arbitrary command to an NXOS 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.

Options

parameter required default choices comments
commands
yes
The commands to send to the remote NXOS 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 retires as expired.
The commands argument also accepts an alternative form that allows for complex values that specify the command to run and the output format to return. This can be done on a command by command basis. The complex argument supports the keywords command and output where command is the command to run and output is one of 'text' or 'json'.
host
yes
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.
interval
no 1
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)
no 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.
password
no
Specifies the password to use to authenticate the connection to the remote device. This is a common argument used for either cli or nxapi transports. If the value is not specified in the task, the value of environment variable ANSIBLE_NET_PASSWORD will be used instead.
port
no 0 (use common port)
Specifies the port to use when building the connection to the remote device. This value applies to either cli or nxapi. The port value will default to the appropriate transport common port if none is provided in the task. (cli=22, http=80, https=443).
provider
no
Convenience method that allows all nxos arguments to be passed as a dict object. All constraints (required, choices, etc) must be met either by individual arguments or values in this dict.
retries
no 10
Specifies the number of retries a command should by tried before it is considered failed. The command is run on the target device every retry and evaluated against the wait_for conditionals.
ssh_keyfile
no
Specifies the SSH key to use to authenticate the connection to the remote device. This argument is only used for the cli transport. If the value is not specified in the task, the value of environment variable ANSIBLE_NET_SSH_KEYFILE will be used instead.
timeout
(added in 2.3)
no 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. NX-API can be slow to return on long-running commands (sh mac, sh bgp, etc).
transport
yes cli
Configures the transport connection to use when connecting to the remote device. The transport argument supports connectivity to the device over cli (ssh) or nxapi.
use_ssl
no
  • yes
  • no
Configures the transport to use SSL if set to true only when the transport=nxapi, otherwise this value is ignored.
username
no
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 nxapi 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.
validate_certs
no
  • yes
  • no
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 nxapi, this value is ignored.
wait_for
(added in 2.2)
no
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. See examples.

aliases: waitfor

Examples

# Note: examples below use the following provider dict to handle
#       transport and authentication to the node.
---
vars:
  cli:
    host: "{{ inventory_hostname }}"
    username: admin
    password: admin
    transport: cli

---
- name: run show version on remote devices
  nxos_command:
    commands: show version
    provider: "{{ cli }}"

- name: run show version and check to see if output contains Cisco
  nxos_command:
    commands: show version
    wait_for: result[0] contains Cisco
    provider: "{{ cli }}"

- name: run multiple commands on remote nodes
  nxos_command:
    commands:
      - show version
      - show interfaces
    provider: "{{ cli }}"

- name: run multiple commands and evaluate the output
  nxos_command:
    commands:
      - show version
      - show interfaces
    wait_for:
      - result[0] contains Cisco
      - result[1] contains loopback0
    provider: "{{ cli }}"

- name: run commands and specify the output format
  nxos_command:
    commands:
      - command: show version
        output: json
    provider: "{{ cli }}"

Return Values

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

name description returned type sample
stdout_lines
The value of stdout split into a list
always apart from low level errors (such as action plugin) list [['...', '...'], ['...'], ['...']]
stdout
The set of responses from the commands
always apart from low level errors (such as action plugin) list ['...', '...']
failed_conditions
The list of conditionals that have failed
failed list ['...', '...']


Status

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

Maintenance Info

For more information about Red Hat’s this support of this module, please refer to this knowledge base article<https://access.redhat.com/articles/rhel-top-support-policies>

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