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haproxy-wi/app/scripts/ansible/roles/node_exporter/tasks/preflight.yml

87 lines
2.7 KiB

---
- name: Assert usage of systemd as an init system
assert:
that: ansible_service_mgr == 'systemd'
msg: "This role only works with systemd"
- name: Get systemd version
command: systemctl --version
changed_when: false
check_mode: false
register: __systemd_version
tags:
- skip_ansible_lint
- name: Set systemd version fact
set_fact:
node_exporter_systemd_version: "{{ __systemd_version.stdout_lines[0] | regex_replace('^systemd\\s(\\d+).*$', '\\1') }}"
- name: Naive assertion of proper listen address
assert:
that:
- "':' in node_exporter_web_listen_address"
- name: Assert collectors are not both disabled and enabled at the same time
assert:
that:
- "item not in node_exporter_enabled_collectors"
with_items: "{{ node_exporter_disabled_collectors }}"
- block:
- name: Assert that TLS key and cert path are set
assert:
that:
- "node_exporter_tls_server_config.cert_file is defined"
- "node_exporter_tls_server_config.key_file is defined"
- name: Check existence of TLS cert file
stat:
path: "{{ node_exporter_tls_server_config.cert_file }}"
register: __node_exporter_cert_file
- name: Check existence of TLS key file
stat:
path: "{{ node_exporter_tls_server_config.key_file }}"
register: __node_exporter_key_file
- name: Assert that TLS key and cert are present
assert:
that:
- "{{ __node_exporter_cert_file.stat.exists }}"
- "{{ __node_exporter_key_file.stat.exists }}"
when: node_exporter_tls_server_config | length > 0
- name: Check if node_exporter is installed
stat:
path: "{{ _node_exporter_binary_install_dir }}/node_exporter"
register: __node_exporter_is_installed
check_mode: false
tags:
- node_exporter_install
- 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
- block:
- name: Get checksum list from github
set_fact:
_checksums: "{{ lookup('url', 'https://github.com/prometheus/node_exporter/releases/download/v' + node_exporter_version + '/sha256sums.txt', wantlist=True) | list }}"
run_once: true
- name: "Get checksum for {{ go_arch }} architecture"
set_fact:
node_exporter_checksum: "{{ item.split(' ')[0] }}"
with_items: "{{ _checksums }}"
when:
- "('linux-' + go_arch + '.tar.gz') in item"
when: node_exporter_binary_local_dir | length == 0