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- ---
-
- # This requires the dnspython library which is usually unavailable.
- - name: Check DNS SRV record for {{ dns_srv_record_check.service_and_protocol }} on {{ dns_srv_record_check.domain }} using Ansible dig lookup
- set_fact:
- lookup_dig_srv: "{{ lookup('dig', (dns_srv_record_check.service_and_protocol + '.' + dns_srv_record_check.domain + '/SRV'), 'flat=0', wantlist=False) }}"
- register: result_lookup_dig_srv
- ignore_errors: true
-
- - name: Fail if DNS SRV check via Ansible dig lookup failed for non-dependency reason
- fail:
- msg: "DNS SRV record check via Ansible dig lookup plugin (which uses the dnspython package) failed. Error is: {{ result_lookup_dig_srv.msg }}"
- when: "result_lookup_dig_srv.failed and 'dnspython' not in result_lookup_dig_srv.msg"
-
- # Fallback to using the dig CLI tool if dnspython was unavailable.
- - name: Check DNS SRV record for {{ dns_srv_record_check.service_and_protocol }} on {{ dns_srv_record_check.domain }} using dig CLI tool
- shell:
- cmd: "dig -t srv {{ (dns_srv_record_check.service_and_protocol + '.' + dns_srv_record_check.domain)|quote }}"
- register: result_cli_dig_srv
- changed_when: false
- ignore_errors: true
- when: "lookup_dig_srv is not defined"
-
- - name: Fail if dig CLI used and failed
- fail:
- msg: >-
- Failed performing DNS SRV record check.
- You neither have the `dnspython` Python package, nor the `dig` program installed locally.
- You need to install one of those, so we could perform a DNS SRV record check.
- Full error from trying to run `dig`: {{ result_cli_dig_srv }}
- when: "lookup_dig_srv is not defined and result_cli_dig_srv.stderr != ''"
-
- # Some DNS servers may respond with '' (stands for "No Answer").
- # Most usually, a missing record would yield a 'NXDOMAIN' response.
- # In any case, we consider any non-mapping response to mean "missing record".
- - name: Fail if DNS SRV record missing (Ansible dig lookup)
- fail:
- msg: >-
- It appears the DNS SRV record for {{ dns_srv_record_check.service_and_protocol }} on {{ dns_srv_record_check.domain }} is not set up correctly (the record is missing).
- See the 'Configuring DNS' documentation for this playbook.
- when: "lookup_dig_srv is defined and lookup_dig_srv is not mapping"
-
- - name: Fail if DNS SRV record incorrect (Ansible dig lookup)
- fail:
- msg: >-
- It appears the DNS SRV record for {{ dns_srv_record_check.service_and_protocol }} on {{ dns_srv_record_check.domain }} is not set up correctly.
- Expected it to point to `{{ dns_srv_record_check.expected_target }}` (port {{ dns_srv_record_check.expected_port }}).
- Found it pointing to `{{ lookup_dig_srv.target }}` (port {{ lookup_dig_srv.port }}).
- See the 'Configuring DNS' documentation for this playbook.
- when: "lookup_dig_srv is defined and (lookup_dig_srv.target != dns_srv_record_check.expected_target or lookup_dig_srv.port != dns_srv_record_check.expected_port)"
-
- # We expect an answer like this:
- # ;; ANSWER SECTION:
- # _matrix._tcp.DOMAIN. 10800 IN SRV 10 0 8448 matrix.DOMAIN.
- - name: Fail if DNS SRV record missing or incorrect (dig CLI tool)
- fail:
- msg: >-
- It appears the DNS SRV record for {{ dns_srv_record_check.service_and_protocol }} on {{ dns_srv_record_check.domain }} is not set up correctly.
- Expected it to point to `{{ dns_srv_record_check.expected_target }}` (port {{ dns_srv_record_check.expected_port }}).
- See the 'Configuring DNS' documentation for this playbook.
- Full response from the `dig` lookup was: {{ result_cli_dig_srv }}
- when: "lookup_dig_srv is not defined and (dns_srv_record_check.expected_port|string + ' ' + dns_srv_record_check.expected_target) not in result_cli_dig_srv.stdout"
-
- - name: Report correct DNS SRV record
- debug:
- msg: >-
- The DNS SRV record for `{{ dns_srv_record_check.service_and_protocol }}` on `{{ dns_srv_record_check.domain }}`
- points to `{{ dns_srv_record_check.expected_target }}` (port {{ dns_srv_record_check.expected_port }}), as expected.
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