fix(ansible,docker,swarm): improved IP management

ansible/play-o11y--0-initialize.yml

@@ -1,5 +1,5 @@
 ---
-- name: Initialize a O11y Cluster
+- name: Initialize O11y Cluster
  hosts: all
  become: true
  roles:

ansible/play-test--0-docker-swarm.yml

@@ -9,7 +9,7 @@
  purge_test: '{{ variable_purge_test | default(true) }}'
 
  roles:
- - ubuntu # Update the OS and reboot the server
+ # - ubuntu # Update the OS and reboot the server
  - dns # Configure ansible facts for networking info lookup
  - docker # Intialize docker and docker swarm cluster
 

ansible/roles/docker/tasks/install-swarm.yml

@@ -1,34 +1,45 @@
 # tasks file for roles/swarm
 ---
-- name: Retrieve the initial Swarm Info
- community.docker.docker_swarm_info:
- register: swarm_info_initial
- when: inventory_hostname == groups['managers'][0]
- ignore_errors: true
+- name: Gather network interfaces facts
+ ansible.builtin.setup:
+ gather_subset:
+ - network
  no_log: "{{ variable_no_log | default (true) }}"
- changed_when: swarm_info_initial.docker_swarm_active == false
+ when: inventory_hostname in groups['managers']
 
-- name: Initialize Swarm
+- name: Check if eth1 (private vlan) exists
+ set_fact:
+ eth1_exists: true
+ when: inventory_hostname in groups['managers'] and "'eth1' in ansible_interfaces"
+
+- name: Set the management IP address for swarm on managers
+ set_fact:
+ mgmt_listen_ip: "{{ eth1_exists | ternary( ansible_eth1.ipv4.address, ansible_default_ipv4.address) }}"
+ when: inventory_hostname in groups['managers']
+
+- name: Initialize a Docker Swarm
  community.docker.docker_swarm:
  state: present
- advertise_addr: "{{ ansible_default_ipv4.address }}"
- listen_addr: "{{ ansible_default_ipv4.address }}:2377"
- when: inventory_hostname == groups['managers'][0] and swarm_info_initial.docker_swarm_active == false
+ advertise_addr: "{{ mgmt_listen_ip }}"
+ listen_addr: "{{ mgmt_listen_ip }}:2377"
+ when: inventory_hostname == groups['managers'][0]
  no_log: "{{ variable_no_log | default (true) }}"
 
-- name: Refresh the Swarm Info
+- name: Retrieve the Swarm Info
  community.docker.docker_swarm_info:
  nodes: true
  register: swarm_info
  when: inventory_hostname == groups['managers'][0]
  no_log: "{{ variable_no_log | default (true) }}"
 
-# TODO: Add checks and add more managers if needed
+ # TODO: Add checks and add more managers if needed
+ # - name: Set useful information on Managers as Facts
+ # - name: Join Swarm as manager using token
 
 - name: Set useful information on Workers as Facts
  set_fact:
  swarm_join_token_worker: "{{ hostvars[groups['managers'][0]]['swarm_info']['swarm_facts']['JoinTokens']['Worker'] }}"
- swarm_manager_addr: "{{ hostvars[groups['managers'][0]]['ansible_default_ipv4']['address'] }}"
+ swarm_manager_addr: "{{ hostvars[groups['managers'][0]]['mgmt_listen_ip'] }}"
  when: inventory_hostname in groups['workers']
  no_log: "{{ variable_no_log | default (true) }}"
 
@@ -52,4 +63,4 @@
 - name: Print Swarm Nodes
  debug:
  msg: "{{ result.nodes }}"
- when: inventory_hostname == groups['managers'][0]
+ when: inventory_hostname in groups['managers']

ansible/roles/docker/tasks/main.yml

@@ -3,6 +3,7 @@
  stat:
  path: /usr/bin/docker
  register: docker_installed
+ no_log: "{{ variable_no_log | default (true) }}"
 
 - name: Install Docker if not installed using the role
  include_role: