add reader

README.md

@@ -22,6 +22,7 @@ metadata:
 type: Opaque
 stringData:
   mariadb_hostname: db.maria.com
+  mariadb_reader_hostname: db.reader.maria.com
   mariadb_password: myPassword
   mariadb_port: '3306'
   mariadb_user: root
@@ -34,6 +35,7 @@ metadata:
 type: Opaque
 stringData:
   mariadb_hostname: db.maria.com
+  mariadb_reader_hostname: db.reader.maria.com
   mariadb_password: myPassword
   mariadb_port: '3306'
   mariadb_user: root
@@ -62,3 +64,6 @@ Install the [APB CLI](https://github.com/ansibleplaybookbundle/ansible-playbook-
 
 ## Release
 An automatic Docker build is set up for this repository. If you change stuff in `apb.yml` don't forget to run `apb prepare` before committing.
+
+## Reader configuration
+If the mariadb/mysql supports a reader instance aswell as a writer, you can configure the `mariadb_reader_hostname` to point to the endpoint for a reader, otherwise just populate it with the same value as the `mariadb_hostname` if one is not available

defaults/main.yml

@@ -6,3 +6,4 @@ _apb_service_class_id: 0
 _apb_service_instance_id: 0
 
 app_name: "mariadb-{{ _apb_service_instance_id }}"
+app_reader_name: "mariadb-reader-{{ _apb_service_instance_id }}"

tasks/main.yml

@@ -13,6 +13,7 @@
 - name: read DB credentials
   set_fact:
     mariadb_hostname: "{{ lookup('file', secret ~ '_mariadb_hostname') }}"
+    mariadb_reader_hostname: "{{ lookup('file', secret ~ '_mariadb_reader_hostname') }}"
     mariadb_port: "{{ lookup('file', secret ~ '_mariadb_port') }}"
     mariadb_user: "{{ lookup('file', secret ~ '_mariadb_user') }}"
     mariadb_password: "{{ lookup('file', secret ~ '_mariadb_password') }}"
@@ -30,6 +31,7 @@
           DB_TYPE: "{{ 'mariadb' }}"
           DB_NAME: "{{ create_db_name }}"
           DB_HOST: "{{ app_name }}"
+          DB_READER_HOST: "{{ app_reader_name }}"
           DB_PORT: "{{ mariadb_port }}"
           DB_USER: "{{ create_db_user }}"
           DB_PASSWORD: "{{ create_db_password }}"
@@ -80,6 +82,14 @@
     type: ExternalName
     external_name: "{{ mariadb_hostname }}"
 
+- name: "{{ apb_action }} OpenShift service"
+  k8s_v1_service:
+    state: "{{ ensure_state }}"
+    name: "{{ app_reader_name }}"
+    namespace: "{{ namespace }}"
+    type: ExternalName
+    external_name: "{{ mariadb_reader_hostname }}"
+
 - name: "{{ apb_action }} secret with DB credentials"
   k8s:
     state: "{{ ensure_state }}"