network-relation-changed.yaml

---

# Note: this is necessary when being called from
# network-relation-changed, not from db-relation-joined.

# Read data from flannel config
- name: Read Flannel Subnet
  shell: cat /run/flannel/subnet.env | grep FLANNEL_SUBNET | cut -f2 -d"="
  register: flannel_subnet

- name: Read Flannel MTU
  shell: cat /run/flannel/subnet.env | grep FLANNEL_MTU | cut -f2 -d"="
  register: flannel_mtu

- name: Read network relation
  shell: "{{ charm_dir }}/scripts/parse_relation.py"
  register: network_id

- set_fact:
    flannel_mtu: "{{ flannel_mtu.stdout }}"
    flannel_subnet: "{{ flannel_subnet.stdout }}"
    scoped_network: "{{ network_id.stdout | default('') }}"

- name: Send Data to Docker Host for bridge configuration
  shell: relation-set -r {{ scoped_network }} flannel-subnet={{ flannel_subnet  }} flannel-mtu={{ flannel_mtu }} overlay_type=udp
  when: scoped_network != ""