junos_command – Run arbitrary commands on an Juniper JUNOS device

Synopsis

  • Sends an arbitrary set of commands to an JUNOS 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.

Requirements

The below requirements are needed on the host that executes this module.

  • jxmlease

  • ncclient (>=v0.5.2)

Parameters

Parameter Choices/Defaults Comments
commands
-
The commands to send to the remote junos 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.
display
-
    Choices:
  • text
  • json
  • xml
  • set
Default:
"depends on input argument I(rpcs) or I(commands)"
Encoding scheme to use when serializing output from the device. This handles how to properly understand the output and apply the conditionals path to the result set. For rpcs argument default display is xml and for commands argument default display is text. Value set is applicable only for fetching configuration from device.

aliases: format, output
interval
-
Default:
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
-
    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
dictionary
Deprecated
Starting with Ansible 2.5 we recommend using connection: network_cli or connection: netconf.
For more information please see the Junos OS Platform Options guide.
A dict object containing connection details.
host
string / 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.
password
string
Specifies the password to use to authenticate the connection to the remote device. This value is used to authenticate the SSH session. If the value is not specified in the task, the value of environment variable ANSIBLE_NET_PASSWORD will be used instead.
port
integer
Default:
22
Specifies the port to use when building the connection to the remote device. The port value will default to the well known SSH port of 22 (for transport=cli) or port 830 (for transport=netconf) device.
ssh_keyfile
path
Specifies the SSH key to use to authenticate the connection to the remote device. This value is the path to the key used to authenticate the SSH session. If the value is not specified in the task, the value of environment variable ANSIBLE_NET_SSH_KEYFILE will be used instead.
timeout
integer
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.
username
string
Configures the username to use to authenticate the connection to the remote device. This value is used to authenticate the SSH session. If the value is not specified in the task, the value of environment variable ANSIBLE_NET_USERNAME will be used instead.
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.
rpcs
-
The rpcs argument accepts a list of RPCs to be executed over a netconf session and the results from the RPC execution is return to the playbook via the modules results dictionary.
wait_for
-
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

Notes

Note

  • This module requires the netconf system service be enabled on the remote device being managed.

  • Tested against vSRX JUNOS version 15.1X49-D15.4, vqfx-10000 JUNOS Version 15.1X53-D60.4.

  • Recommended connection is netconf. See the Junos OS Platform Options.

  • This module also works with network_cli connections and with local connections for legacy playbooks.

  • For information on using CLI and netconf see the Junos OS 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 Juniper network devices see https://www.ansible.com/ansible-juniper.

Examples

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

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

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

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

- name: run commands and specify the output format
  junos_command:
    commands: show version
    display: json

- name: run rpc on the remote device
  junos_command:
    commands: show configuration
    display: set

- name: run rpc on the remote device
  junos_command:
    rpcs: get-software-information

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:
['...', '...']
output
list
If the display is in xml format.
The set of transformed xml to json format from the commands responses

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

Red Hat Support

More information about Red Hat’s support of this module is available from this Red Hat Knowledge Base article.

Authors

  • Peter Sprygada (@privateip)

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