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Error when reinstall

See original GitHub issue

What happened?

TASK [cloudalchemy.node-exporter : Create the node_exporter group] **********************************************************************************************************************************************
fatal: [server]: FAILED! => {}

MSG:

The conditional check '( not __node_exporter_is_installed.stat.exists ) or ( __node_exporter_current_version_output.stderr_lines[0].split(" ")[2] != node_exporter_version ) or ( node_exporter_binary_local_dir | length > 0 )' failed. The error was: error while evaluating conditional (( not __node_exporter_is_installed.stat.exists ) or ( __node_exporter_current_version_output.stderr_lines[0].split(" ")[2] != node_exporter_version ) or ( node_exporter_binary_local_dir | length > 0 )): list object has no element 0

The error appears to be in '/home/igorohrimenko/ansible-playbooks/roles/cloudalchemy.node-exporter/tasks/install.yml': line 2, column 3, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

---
- name: Create the node_exporter group
  ^ here

Did you expect to see some different? yes How to reproduce it (as minimally and precisely as possible): Install node_exporter ReInstall node_exporter Environment

Role version: 2.0
Ansible version information: ansible 2.9.6
Variables:

insert role variables relevant to the issue

Ansible playbook execution Logs:

insert Ansible logs relevant to the issue here

Anything else we need to know?: Problem in task:

- name: Gather currently installed node_exporter version (if any)
  command: "{{ _node_exporter_binary_install_dir }}/node_exporter --version"
  args:
    warn: false
  changed_when: false
  register: __node_exporter_current_version_output
  check_mode: false
  when: __node_exporter_is_installed.stat.exists
  tags:
    - node_exporter_install
    - skip_ansible_lint

after register print var:

TASK [cloudalchemy.node-exporter : debug] ***********************************************************************************************************************************************************************
ok: [server] => {
    "__node_exporter_current_version_output": {
        "changed": false,
        "cmd": [
            "/usr/local/bin/node_exporter",
            "--version"
        ],
        "delta": "0:00:00.007607",
        "end": "2021-07-20 14:14:00.637978",
        "failed": false,
        "rc": 0,
        "start": "2021-07-20 14:14:00.630371",
        "stderr": "",
        "stderr_lines": [],
        "stdout": "node_exporter, version 1.2.0 (branch: HEAD, revision: 12968948aec1e2b216a2ecefc45cf3a50671aecb)\n  build user:       root@6b17174de526\n  build date:       20210715-16:35:54\n  go version:       go1.16.6\n  platform:         linux/amd64",
        "stdout_lines": [
            "node_exporter, version 1.2.0 (branch: HEAD, revision: 12968948aec1e2b216a2ecefc45cf3a50671aecb)",
            "  build user:       root@6b17174de526",
            "  build date:       20210715-16:35:54",
            "  go version:       go1.16.6",
            "  platform:         linux/amd64"
        ]
    }
}

Fix, change stderr_lines to stdout_lines in this task:

- import_tasks: install.yml
  become: true
  when:
    ( not __node_exporter_is_installed.stat.exists ) or
    ( __node_exporter_current_version_output.stdout_lines[0].split(" ")[2] != node_exporter_version ) or
    ( node_exporter_binary_local_dir | length > 0 )
  tags:
    - node_exporter_install