Mellanox Switch

This guide helps you set up Mellanox switches that use MLNX-OS with Ansible's expect module.

This role will install the Python expect package on your local machine.

Requirements

The switches need to be set up for SSH access.

Role Variables

mellanox_switch_provider is the information needed to log in, similar to the provider argument in the dellos modules. It should be a dictionary with these fields:

• host: the hostname or IP address of the switch.
• username: the username for SSH access to the switch.
• auth_pass: the password for logging in.

mellanox_switch_config is a list of commands to apply to the switch. It starts off as an empty list.

mellanox_switch_interface_config holds settings for interfaces. It is a dictionary that matches switch interface names to their configuration. Each entry can include:

• description: a description for the interface.
• config: a list of specific settings for that interface.

Dependencies

None

Example Playbook

Here is an example playbook that sets up switches in the mellanox-switches group. It assumes that each switch has host variables for the host, username, and passwords. The playbook applies a global setting for VLAN 42 and enables two Ethernet interfaces as access ports.

---
- name: Ensure Mellanox switches are configured
  hosts: mellanox-switches
  gather_facts: no
  roles:
    - role: stackhpc.mellanox-switch
      mellanox_switch_provider:
        host: "{{ switch_host }}"
        username: "{{ switch_user }}"
        auth_pass: "{{ switch_auth_pass }}"
      mellanox_switch_config:
        - "vlan 42"
        - "exit"
      mellanox_switch_interface_config:
        ethernet 1/1:
          description: server-1
          config:
            - "no shutdown"
            - "switchport mode access"
        ethernet 1/2:
          description: server-2
          config:
            - "no shutdown"
            - "switchport mode access"

Author Information

• Mark Goddard (mark@stackhpc.com)