Ansible Role: Netplan Setup

Build and apply a Netplan configuration for a host. This role assumes there are two physical adapters and will set static IP information for the primary interface and disable the secondary interface. This is useful for Kubernetes deployments where having an active secondary interface can cause traffic routing problems for MetalLB.

Requirements

None

Role Variables

There are three variables included in the role: # Primary DNS server dns_server: 10.100.24.11

# Secondary DNS server
dns_server_2: 10.100.24.21

# DNS search domain
domain: tme.nebulon.com

Additionally, there are another set of variables that are defined in host_vars files for each host. This is done to provide per-host network information. Alternatively, the mgt_net and gateway4 variables could be dynamically generated from hostvars, assuming DHCP reservations apply the correct IP configuration to the host and we are just codifying that information in static assigments.

# Management network address in CIDR format
mgt_net: 10.100.25.46/22

# Gateway address in IPV4 format
gateway4: 10.100.24.1

Dependencies

None

Example Playbook

# ===========================================================================
# Network configuration
# ===========================================================================
- name: Configure netplan and DNS settings
  hosts: servers
  tags: play_network_setup

  roles:
    - jedimt.network_setup

License

MIT

Author Information

Aaron Patten aaronpatten@gmail.com