Support CloudKitty deployment with internal TLS

Configure cloudkitty_influxdb_use_ssl automatically based on the value
of kolla_enable_tls_internal. Set cloudkitty_elasticsearch_cafile,
cloudkitty_influxdb_cafile and cloudkitty_prometheus_cafile to
openstack_cacert.

Disable certificate validation when bootstrapping the InfluxDB database:
the influxdb_database module and the InfluxDB 1.x Python client don't
support specifying a CA certificate file.

This fixes bootstrap and execution of CloudKitty with internal TLS.

Closes-Bug: #1998831
Change-Id: I5524169b9567819d379726099bf70c692c85acc1

ansible/roles/cloudkitty/defaults/main.yml

@@ -154,10 +154,10 @@ cloudkitty_custom_metrics_yaml_file: "metrics.yml"
 # cloudkitty_influxdb_retention_policy: "autogen"
 
 # Set to true to use SSL for InfluxDB connections.
-cloudkitty_influxdb_use_ssl: false
+cloudkitty_influxdb_use_ssl: "{{ kolla_enable_tls_internal }}"
 
 # Path of the CA certificate to trust for HTTPS connections.
-# cloudkitty_influxdb_cafile: "{{ openstack_cacert }}"
+cloudkitty_influxdb_cafile: "{{ openstack_cacert }}"
 
 # Set to true to authorize insecure HTTPS connections to InfluxDB.
 # This means, HTTPS connections without validating the certificate used by InfluxDB
@@ -172,7 +172,7 @@ cloudkitty_elasticsearch_index_name: "cloudkitty"
 cloudkitty_elasticsearch_url: "{{ internal_protocol }}://{{ opensearch_address }}:{{ opensearch_port }}"
 
 # Path of the CA certificate to trust for HTTPS connections.
-# cloudkitty_elasticsearch_cafile: "{{ openstack_cacert }}"
+cloudkitty_elasticsearch_cafile: "{{ openstack_cacert }}"
 
 # Set to true to authorize insecure HTTPS connections to Elasticsearch.
 # This means, HTTPS connections without validating the certificate used by elasticsearch
@@ -189,7 +189,7 @@ cloudkitty_collector_backend: "gnocchi"
 cloudkitty_prometheus_url: "{{ internal_protocol }}://{{ kolla_internal_fqdn | put_address_in_context('url') }}:{{ prometheus_port }}/api/v1"
 
 # Path of the CA certificate to trust for HTTPS connections.
-# cloudkitty_prometheus_cafile: "{{ openstack_cacert }}"
+cloudkitty_prometheus_cafile: "{{ openstack_cacert }}"
 
 # Set to true to authorize insecure HTTPS connections to Prometheus.
 # This means, HTTPS connections without validating the certificate used by prometheus.

ansible/roles/cloudkitty/tasks/bootstrap.yml

@@ -45,6 +45,9 @@
       port: "{{ influxdb_http_port }}"
       ssl: "{{ cloudkitty_influxdb_use_ssl | bool }}"
       database_name: "{{ cloudkitty_influxdb_name }}"
+      # The influxdb_database module and the InfluxDB 1.x Python client don't
+      # support specifying a CA certificate file.
+      validate_certs: False
   run_once: True
   delegate_to: "{{ groups['cloudkitty-api'][0] }}"
   when: cloudkitty_storage_backend == 'influxdb'

releasenotes/notes/cloudkitty-internal-tls-c3e18be2a9f95c5d.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fixes configuration of CloudKitty when internal TLS is enabled.
+    `LP#1998831 <https://bugs.launchpad.net/kolla-ansible/+bug/1998831>`__