matrix-docker-ansible-deploy/roles/matrix-server/tasks/self_check/self_check_dns.yml

---

# This requires the dnspython library and will fail with a friendly error when unavailable.
- name: Check DNS SRV record
  set_fact:
    result_dig_srv: "{{ lookup('dig', ('_matrix._tcp.' + hostname_identity + './SRV'), 'flat=0', wantlist=False) }}"

- name: Fail if DNS SRV record missing
  fail:
    msg: "It appears the DNS SRV record for {{ hostname_identity }} is not set up correctly (the record is missing). See the 'Configuring DNS' documentation for this playbook."
  when: "result_dig_srv == 'NXDOMAIN'"

- name: Fail if DNS SRV record incorrect
  fail:
    msg: >
      It appears the DNS SRV record for {{ hostname_identity }} is not set up correctly.
      Expected it to point to `{{ (hostname_matrix + '.') }}` (port 8448).
      Found it pointing to `{{ result_dig_srv.target }}` (port {{ result_dig_srv.port }}).
      See the 'Configuring DNS' documentation for this playbook.
  when: "result_dig_srv.target != (hostname_matrix + '.') or result_dig_srv.port != 8448"

- name: Report correct DNS SRV record
  debug:
    msg: "The DNS SRV record for {{ hostname_identity }} points to {{ hostname_matrix }}, as expected"
Add self-check command 2018-10-21 09:58:25 +00:00			`---`

Use Ansible dig lookup instead of calling the dig program This means we no longer have a dependency on the `dig` program, but we do have a dependency on `dnspython`. Improves things as suggested in #65 (Github issue). 2019-01-08 08:19:45 +00:00			`# This requires the dnspython library and will fail with a friendly error when unavailable.`
Add self-check command 2018-10-21 09:58:25 +00:00			`- name: Check DNS SRV record`
Use Ansible dig lookup instead of calling the dig program This means we no longer have a dependency on the `dig` program, but we do have a dependency on `dnspython`. Improves things as suggested in #65 (Github issue). 2019-01-08 08:19:45 +00:00			`set_fact:`
			`result_dig_srv: "{{ lookup('dig', ('_matrix._tcp.' + hostname_identity + './SRV'), 'flat=0', wantlist=False) }}"`
Add self-check command 2018-10-21 09:58:25 +00:00
Use Ansible dig lookup instead of calling the dig program This means we no longer have a dependency on the `dig` program, but we do have a dependency on `dnspython`. Improves things as suggested in #65 (Github issue). 2019-01-08 08:19:45 +00:00			`- name: Fail if DNS SRV record missing`
Add self-check command 2018-10-21 09:58:25 +00:00			`fail:`
Use Ansible dig lookup instead of calling the dig program This means we no longer have a dependency on the `dig` program, but we do have a dependency on `dnspython`. Improves things as suggested in #65 (Github issue). 2019-01-08 08:19:45 +00:00			`msg: "It appears the DNS SRV record for {{ hostname_identity }} is not set up correctly (the record is missing). See the 'Configuring DNS' documentation for this playbook."`
			`when: "result_dig_srv == 'NXDOMAIN'"`
Add self-check command 2018-10-21 09:58:25 +00:00
			`- name: Fail if DNS SRV record incorrect`
			`fail:`
Use Ansible dig lookup instead of calling the dig program This means we no longer have a dependency on the `dig` program, but we do have a dependency on `dnspython`. Improves things as suggested in #65 (Github issue). 2019-01-08 08:19:45 +00:00			`msg: >`
			`It appears the DNS SRV record for {{ hostname_identity }} is not set up correctly.`
			Expected it to point to `{{ (hostname_matrix + '.') }}` (port 8448).
			Found it pointing to `{{ result_dig_srv.target }}` (port {{ result_dig_srv.port }}).
			`See the 'Configuring DNS' documentation for this playbook.`
			`when: "result_dig_srv.target != (hostname_matrix + '.') or result_dig_srv.port != 8448"`
Add self-check command 2018-10-21 09:58:25 +00:00
			`- name: Report correct DNS SRV record`
			`debug:`
			`msg: "The DNS SRV record for {{ hostname_identity }} points to {{ hostname_matrix }}, as expected"`