Support for only installing select services on a node

roles/StackStorm.st2/handlers/main.yml

@@ -8,27 +8,32 @@
 - name: reload st2
  become: yes
  command: st2ctl reload --register-all
+ when: "'st2actionrunner' in st2_services"
 
 - name: restart st2actionrunner
  become: yes
  service:
  name: st2actionrunner
  state: restarted
+ when: "'st2actionrunner' in st2_services"
 
 - name: restart st2auth
  become: yes
  service:
  name: st2auth
  state: restarted
+ when: "'st2auth' in st2_services"
 
 - name: restart st2api
  become: yes
  service:
  name: st2api
  state: restarted
+ when: "'st2api' in st2_services"
 
 - name: restart st2stream
  become: yes
  service:
  name: st2stream
  state: restarted
+ when: "'st2stream' in st2_services"

roles/StackStorm.st2/tasks/main.yml

@@ -87,14 +87,13 @@
 - name: Install additional Python packages into the st2 virtualenv
  become: yes
  pip:
- name: "{{ item }}"
+ name: "{{ st2_python_packages }}"
  virtualenv: /opt/stackstorm/st2
  state: present
  register: _task
  retries: 5
  delay: 3
  until: _task is succeeded
- with_items: "{{ st2_python_packages }}"
  notify:
  - restart st2
  tags: st2
@@ -142,6 +141,14 @@
  loop: "{{ st2_services }}"
  tags: st2
 
+- name: Modify st2ctl to only control the given services
+ become: yes
+ lineinfile:
+ path: /opt/stackstorm/st2/bin/st2ctl
+ regexp: '^COMPONENTS='
+ line: "COMPONENTS=\"{{ st2_services | join (' ') }}\""
+ tags: st2
+
 # Since flush handlers does not support conditionals, we need to have a dedicated playbook
 # https://github.com/ansible/ansible/issues/41313#issuecomment-520891625
 - name: Flush handlers to prepare StackStorm if there are packs to install

roles/StackStorm.st2smoketests/tasks/main.yml

@@ -11,6 +11,7 @@
  changed_when: no
  tags:
  - smoke-tests
+ when: "{{ 'st2actionrunner' in st2_services }}"
 
 - name: st2 installed
  command: st2 --version