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|
---
- name: check if prometheus apt component of spreadspace repo is enabled
assert:
msg: "please enable the 'prometheus' component of spreadspace repo using 'spreadspace_apt_repo_components'"
that:
- spreadspace_apt_repo_components is defined
- "'prometheus' in spreadspace_apt_repo_components"
- name: prepare storage volume for /var/lib/prometheus
when: prometheus_server_storage is defined
vars:
storage_volume: "{{ prometheus_server_storage | combine({'dest': '/var/lib/prometheus'}) }}"
include_role:
name: "storage/{{ prometheus_server_storage.type }}/volume"
- name: generate apt pin file for prometheus package
when: prometheus_server_version is defined
copy:
dest: "/etc/apt/preferences.d/prom-server.pref"
content: |
Package: prom-server
Pin: version {{ prometheus_server_version }}-1
Pin-Priority: 1001
- name: remove apt pin file for prometheus package
when: prometheus_server_version is not defined
file:
path: "/etc/apt/preferences.d/prom-server.pref"
state: absent
- name: install apt packages
apt:
name: "prom-server{% if prometheus_server_version is defined %}={{ prometheus_server_version }}-1{% endif %}"
state: present
allow_downgrade: yes
notify: restart prometheus
- name: add user for server
user:
name: prometheus
system: yes
home: /var/lib/prometheus
create_home: no
- name: create data directory
file:
path: /var/lib/prometheus/metrics2
state: directory
owner: prometheus
group: prometheus
- name: create TLS CA and certificates
import_tasks: tls.yml
- name: create configuration directories
loop:
- rules
- targets
file:
path: "/etc/prometheus/{{ item }}"
state: directory
- name: create sub-directories for all jobs in targets directory
loop: "{{ prometheus_server_jobs }}"
file:
path: "/etc/prometheus/targets/{{ item }}"
state: directory
- name: enable/disable job targets
vars:
job_targets: "{{ hostvars | prometheus_job_targets(prometheus_server_jobs, prometheus_zone_targets) }}"
block:
- name: install files for enabled targets
loop: "{{ job_targets | selectattr('enabled') }}"
loop_control:
loop_var: target
label: "{{ target.job }} -> {{ target.instance }}"
template:
src: "{{ lookup('first_found', {'paths': ['templates/targets'], 'files': [target.job + '.yml.j2', 'generic.yml.j2']}) }}"
dest: "/etc/prometheus/targets/{{ target.job }}/{{ target.instance }}.yml"
notify: reload prometheus
- name: remove files for disabled targets
loop: "{{ job_targets | rejectattr('enabled') }}"
loop_control:
loop_var: target
label: "{{ target.job }} -> {{ target.instance }}"
file:
path: "/etc/prometheus/targets/{{ target.job }}/{{ target.instance }}.yml"
state: absent
notify: reload prometheus
- name: create sub-directories for all jobs in rules directory
loop: "{{ prometheus_server_jobs | union(prometheus_server_federation | default({}) | dict2items | map(attribute='value.jobs') | flatten | unique) | select('match', '.*/.*') | map('dirname') | unique }}"
file:
path: "/etc/prometheus/rules/{{ item }}"
state: directory
- name: generate rules files for all jobs
loop: "{{ prometheus_server_jobs | union(prometheus_server_federation | default({}) | dict2items | map(attribute='value.jobs') | flatten | unique) | union(['prometheus']) }}"
template:
src: rules.yml.j2
dest: "/etc/prometheus/rules/{{ item }}.yml"
validate: "promtool check rules %s"
notify: reload prometheus
- name: generate configuration file
template:
src: prometheus.yml.j2
dest: /etc/prometheus/prometheus.yml
validate: "promtool check config %s"
notify: reload prometheus
- name: generate web configuration file
when: prometheus_server_auth_users is defined
copy:
content: |
# Ansible managed
basic_auth_users:
{% for user,password in prometheus_server_auth_users.items() %}
{{ user }}: {{ password | password_hash('bcrypt', (user~'@'~inventory_hostname~'/prometheus/server') | bcrypt_salt) }}
{% endfor %}
dest: /etc/prometheus/prometheus-web.yml
mode: 0640
owner: root
group: prometheus
validate: "promtool check web-config %s"
notify: reload prometheus
- name: generate password file prometheus server to scrape itself
when: prometheus_server_selfscraping_auth is defined
copy:
content: "{{ prometheus_server_selfscraping_auth.password }}\n"
dest: /etc/prometheus/prometheus-selfscraping.password
mode: 0640
owner: root
group: prometheus
no_log: yes
notify: reload prometheus
- name: generate password file prometheus server to access alertmanager
when:
- prometheus_server_alertmanager is defined
- "'basic_auth' in prometheus_server_alertmanager"
copy:
content: "{{ prometheus_server_alertmanager.basic_auth.password }}\n"
dest: /etc/prometheus/prometheus-alertmanager.password
mode: 0640
owner: root
group: prometheus
no_log: yes
notify: reload prometheus
- name: generate password file prometheus server to access federation
loop: "{{ prometheus_server_federation | default({}) | dict2items | selectattr('value.basic_auth', 'defined') }}"
loop_control:
label: "{{ item.key }}"
copy:
content: "{{ item.value.basic_auth.password }}\n"
dest: "/etc/prometheus/prometheus-federation-{{ item.key }}.password"
mode: 0640
owner: root
group: prometheus
no_log: yes
notify: reload prometheus
- name: generate systemd service unit
template:
src: prometheus.service.j2
dest: /etc/systemd/system/prometheus.service
notify: restart prometheus
- name: make sure prometheus is enabled and started
systemd:
name: prometheus.service
daemon_reload: yes
state: started
enabled: yes
|
