Fix invalid JSON body in Elasticsearch API requests

The kibana, elasticsearch and monasca roles all use the uri module to
perform Elasticsearch configuration tasks via its API. The body of the
request should be JSON formatted, but these tasks now fail because it is
not.

The following error is seen:

TASK [monasca : Create default control plane organisation if it doesn't
exist]

invalid character '\\'' looking for beginning of object key string

The 'JSON' body in this case was:

{'name': 'monasca_control_plane@default'}

This was probably caused by the recent change to execute these tasks in
the kolla_toolbox container, but may also be caused by an Ansible
version bump (or something else).

This change fixes the issue by ensuring that the body is JSON-encoded in
all cases.

Change-Id: I7acc097381dd9a4af4e014525c1c88213abbde93
Closes-Bug: #1864177

ansible/roles/elasticsearch/tasks/upgrade.yml

@@ -3,6 +3,8 @@
 # https://www.elastic.co/guide/en/elasticsearch/reference/5.6/restart-upgrade.html
 - name: Disable shard allocation
   become: true
+  vars:
+    elasticsearch_shard_body: {"transient": {"cluster.routing.allocation.enable": "none"}}
   kolla_toolbox:
     module_name: uri
     module_args:
@@ -10,7 +12,7 @@
       method: PUT
       status_code: 200
       return_content: yes
-      body: {"transient": {"cluster.routing.allocation.enable": "none"}}
+      body: "{{ elasticsearch_shard_body | to_json }}"
       body_format: json
   delegate_to: "{{ groups['elasticsearch'][0] }}"
   run_once: true

ansible/roles/kibana/tasks/post_config.yml

@@ -37,14 +37,16 @@
   run_once: true
 
 - name: Change kibana config to set index as defaultIndex
+  vars:
+    kibana_default_index_body:
+      defaultIndex: "{{ kibana_default_index_pattern }}"
   become: true
   kolla_toolbox:
     module_name: uri
     module_args:
       url: "{{ internal_protocol }}://{{ kolla_internal_vip_address | put_address_in_context('url') }}:{{ elasticsearch_port }}/.kibana/config/*"
       method: PUT
-      body:
-        defaultIndex: "{{ kibana_default_index_pattern }}"
+      body: "{{ kibana_default_index_body | to_json }}"
       body_format: json
       status_code: 200, 201
   run_once: true

ansible/roles/monasca/tasks/post_config.yml

@@ -32,6 +32,9 @@
 
 - name: Create default control plane organisation if it doesn't exist
   become: true
+  vars:
+    monasca_orgs_body:
+      name: '{{ monasca_grafana_control_plane_org }}'
   kolla_toolbox:
     module_name: uri
     module_args:
@@ -40,8 +43,7 @@
       user: '{{ monasca_grafana_admin_username }}'
       password: '{{ monasca_grafana_admin_password }}'
       body_format: json
-      body:
-        name: '{{ monasca_grafana_control_plane_org }}'
+      body: "{{ monasca_orgs_body | to_json }}"
       force_basic_auth: true
   run_once: True
   when: monasca_grafana_control_plane_org not in monasca_grafana_orgs.json|map(attribute='name')|unique
@@ -61,6 +63,10 @@
   register: monasca_grafana_conf_org
 
 - name: Add {{ monasca_grafana_admin_username }} user to control plane organisation
+  vars:
+    monasca_user_body:
+      loginOrEmail: '{{ monasca_grafana_admin_username }}'
+      role: Admin
   become: true
   kolla_toolbox:
     module_name: uri
@@ -69,9 +75,7 @@
       url: "{{ internal_protocol }}://{{ kolla_internal_vip_address | put_address_in_context('url') }}:{{ monasca_grafana_server_port }}/api/orgs/{{ monasca_grafana_conf_org.json.id }}/users"
       user: '{{ monasca_grafana_admin_username }}'
       password: '{{ monasca_grafana_admin_password }}'
-      body:
-        loginOrEmail: '{{ monasca_grafana_admin_username }}'
-        role: Admin
+      body: "{{ monasca_user_body | to_json }}"
       force_basic_auth: true
       body_format: json
       status_code: 200, 409

releasenotes/notes/uri-json-body-46891dd478d2ad37.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fixes an issue where Elasticsearch API requests made during Kibana,
+    Elasticsearch and Monasca deployment could have an invalid body. See `bug
+    1864177 <https://bugs.launchpad.net/kolla-ansible/+bug/1864177>`_ for
+    details.