Arista Eos Generate Ssh Key

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Jun 22, 2012 SSH keys provide a more secure way of logging into a virtual private server with SSH than using a password alone. With SSH keys, users can log into a server without a password. This tutorial explains how to generate, use, and upload an SSH Key Pair. Generating an SSH key. To generate an SSH key with PuTTYgen, follow these steps: Open the PuTTYgen program. For Type of key to generate, select SSH-2 RSA. Click the Generate button. Move your mouse in the area below the progress bar. When the progress bar is full, PuTTYgen generates your key pair. Type a passphrase in the Key passphrase field. Jul 05, 2019  SSH is enabled by default and a key is generated by default, but you need to have a username/password to be able to login you can configure a username with: username admin role network-admin priv 15 secret arista. Ansible-galaxy install arista.eos-interfaces Requirements. Requires an SSH connection for connectivity to your Arista device. You can use any of the built-in eos connection variables, or the convenience provider dictionary. Role Variables. The tasks in this role are driven by the interfaces object described below.

Several tools exist to generate SSH public/private key pairs. The following sections show how to generate an SSH key pair on UNIX, UNIX-like and Windows platforms.

Generating an SSH Key Pair on UNIX and UNIX-Like Platforms Using the ssh-keygen Utility

UNIX and UNIX-like platforms (including Solaris and Linux) include the ssh-keygen utility to generate SSH key pairs.

To generate an SSH key pair on UNIX and UNIX-like platforms using the ssh-keygen utility:
  1. Navigate to your home directory:
  2. Run the ssh-keygen utility, providing as filename your choice of file name for the private key:

    The ssh-keygen utility prompts you for a passphrase for the private key.

  3. Enter a passphrase for the private key, or press Enter to create a private key without a passphrase:

    Note:

    While a passphrase is not required, you should specify one as a security measure to protect the private key from unauthorized use. When you specify a passphrase, a user must enter the passphrase every time the private key is used.

    The ssh-keygen utility prompts you to enter the passphrase again.

  4. Enter the passphrase again, or press Enter again to continue creating a private key without a passphrase:
  5. The ssh-keygen utility displays a message indicating that the private key has been saved as filename and the public key has been saved as filename.pub. It also displays information about the key fingerprint and randomart image.

Generating an SSH Key Pair on Windows Using the PuTTYgen Program

The PuTTYgen program is part of PuTTY, an open source networking client for the Windows platform.

To generate an SSH key pair on Windows using the PuTTYgen program:
  1. Download and install PuTTY or PuTTYgen.

    To download PuTTY or PuTTYgen, go to http://www.putty.org/ and click the You can download PuTTY here link.

  2. Run the PuTTYgen program.
  3. Set the Type of key to generate option to SSH-2 RSA.
  4. In the Number of bits in a generated key box, enter 2048.
  5. Click Generate to generate a public/private key pair.

    As the key is being generated, move the mouse around the blank area as directed.

  6. (Optional) Enter a passphrase for the private key in the Key passphrase box and reenter it in the Confirm passphrase box.

    Windows key generator free download. Note:

    While a passphrase is not required, you should specify one as a security measure to protect the private key from unauthorized use. When you specify a passphrase, a user must enter the passphrase every time the private key is used.

  7. Click Save private key to save the private key to a file. To adhere to file-naming conventions, you should give the private key file an extension of .ppk (PuTTY private key).

    Note:

    The .ppk file extension indicates that the private key is in PuTTY's proprietary format. You must use a key of this format when using PuTTY as your SSH client. It cannot be used with other SSH client tools. Refer to the PuTTY documentation to convert a private key in this format to a different format.
  8. Select all of the characters in the Public key for pasting into OpenSSH authorized_keys file box.

    Make sure you select all the characters, not just the ones you can see in the narrow window. If a scroll bar is next to the characters, you aren't seeing all the characters.

  9. Right-click somewhere in the selected text and select Copy from the menu.
  10. Open a text editor and paste the characters, just as you copied them. Start at the first character in the text editor, and do not insert any line breaks.
  11. Save the text file in the same folder where you saved the private key, using the .pub extension to indicate that the file contains a public key.
  12. If you or others are going to use an SSH client that requires the OpenSSH format for private keys (such as the ssh utility on Linux), export the private key:
    1. On the Conversions menu, choose Export OpenSSH key.
    2. Save the private key in OpenSSH format in the same folder where you saved the private key in .ppk format, using an extension such as .openssh to indicate the file's content.

gnmi is a command-line client for interacting with agNMI service.

After installing Go run:

This will install the gnmi binary in the bin directoryunder GOPATH.

When running on the switch in a non-default VRF:

Options

  • -addr [<VRF-NAME>/]ADDR:PORT
    Address of the gNMI endpoint (REQUIRED) with VRF name (OPTIONAL)
  • -username USERNAME
    Username to authenticate with
  • -password PASSWORD
    Password to authenticate with
  • -tls
    Enable TLS
  • -cafile PATH
    Path to server TLS certificate file
  • -certfile PATH
    Path to client TLS certificate file
  • -keyfile PATH
    Path to client TLS private key file

Operations

gnmi supports the following operations: capabilites, get,subscribe, update, replace, and delete.

capabilities

capabilities prints the result of calling theCapabilities gNMI RPC.

Example:

get

get requires a path and calls theGet gNMI RPC.

Example:

Get all configuration in the default network instance:

Arista eos upgrade

subscribe

subscribe requires a path and calls theSubscribe gNMI RPC.This command will continuously print out results until signalled toexit, for example by typing Ctrl-C.

Example:

Subscribe to interface counters:

update/replace/delete

update, replace, and delete are used tomodify the configuration of a gNMI endpoint.All of these operations take a path that must specify a single nodeelement. In other words all list members must be fully-specified.

delete takes a path and will delete that path.

Example:

Delete BGP configuration in the default network instance:

update and replace both take a path and a value in JSONformat. The JSON data may be provided in a file. Seeherefor documentation on the differences between update and replace.

Examples:

Disable interface Ethernet3/42:

Replace the BGP global configuration:

Arista Eos Generate Ssh Key Windows

Note: String values need to be quoted if they look like JSON. For example, setting the login banner to tor[13]:

JSON in a file

The value argument to update and replace may be a file. Thecontent of the file is used to make the request.

Arista Eos Generate Ssh Key Linux

Example:

File path/to/subintf100.json contains the following:

Add subinterface 100 to interfaces Ethernet4/1/1 and Ethernet4/2/1 inone transaction:

Arista Eos Generate Ssh Key

CLI requests

Arista Eos Command Reference

gnmi offers the ability to send CLI text inside an update orreplace operation. This is achieved by doing an update orreplace and specifying 'origin=cli' along with an empty path and a set of configure-modeCLI commands separated by n.

Example:

Configure the idle-timeout on SSH connections

P4 Config

gnmi offers the ability to send p4 config files inside a replace operation.This is achieved by doing a replace and specifying 'origin=p4_config'along with the path of the p4 config file to send.

Example:

Send the config.p4 file

Paths

Generate Ssh Key Putty

Paths in gnmi use a simplified xpath style. Path elements areseparated by /. Selectors may be used on list to select certainmembers. Selectors are of the form [key-leaf=value]. All members of alist may be selected by not specifying any selectors, or by using a* as the value in a selector. The following are equivalent:

  • /interfaces/interface
  • /interfaces/interface[name=*]

All characters, including / are allowed inside a selector value. Thecharacter ] must be escaped, for example [key=[]] selects theelement in the list whose key leaf is value [].

See more examples of paths in the examples above.

Seeherefor more information.