clean-runners.yml

---

- name: define hosts
  hosts: localhost
  gather_facts: no
  tags: [collect]
  tasks:
    - name: ensure vars are defined
      fail:
        msg: "{{ item }} must be defined!"
      when: lookup('vars', item) is undefined
      loop:
        - emqx_cluster_name
        - emqx_emqx_num
        - emqx_loadgen_num
    - name: create groups and hosts (emqx)
      add_host:
        name: "emqx-{{ item }}.int.{{ emqx_cluster_name }}"
        group: emqx
        ansible_user: ubuntu
      loop: "{{ range(0, emqx_emqx_num | int) | list }}"
    - name: create groups and hosts (loadgen)
      add_host:
        name: "loadgen-{{ item }}.int.{{ emqx_cluster_name }}"
        group: loadgen
        ansible_user: ubuntu
      loop: "{{ range(0, emqx_loadgen_num | int) | list }}"

- name: kill lingering scripts
  hosts: loadgen
  become: yes
  become_user: root
  tasks:
    - name: show offenders
      shell: "ps -ef | grep bench | grep -v grep"
      register: offenders
    - debug:
        var: offenders.stdout_lines
    - name: kill the scripts
      shell: "ps -ef | grep bench | grep -v grep | awk '{print $2}' | xargs kill -9"

...