Peetz0r
4 years ago
parent
96e6111aa6
commit
13ef9e85cf
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# matrix-prometheus is an open-source systems monitoring and alerting toolkit
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# See: https://github.com/matrix-org/synapse/blob/master/docs/metrics-howto.md
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matrix_prometheus_enabled: false
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matrix_prometheus_docker_image: "docker.io/prom/prometheus:v2.24.1"
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matrix_prometheus_docker_image_force_pull: "{{ matrix_prometheus_docker_image.endswith(':latest') }}"
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matrix_synapse_prometheus_rules_download_url: "https://raw.githubusercontent.com/matrix-org/synapse/{{ matrix_synapse_docker_image_tag }}/contrib/prometheus/synapse-v2.rules"
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matrix_prometheus_base_path: "{{ matrix_base_data_path }}/prometheus"
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matrix_prometheus_config_path: "{{ matrix_prometheus_base_path }}/config"
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matrix_prometheus_data_path: "{{ matrix_prometheus_base_path }}/data"
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# A list of extra arguments to pass to the container
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matrix_prometheus_container_extra_arguments: []
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# List of systemd services that matrix-prometheus.service depends on
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matrix_prometheus_systemd_required_services_list: ['docker.service']
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# List of systemd services that matrix-prometheus.service wants
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matrix_prometheus_systemd_wanted_services_list: []
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# Controls whether the matrix-prometheus container exposes its HTTP port (tcp/9090 in the container).
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#
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# Takes an "<ip>:<port>" or "<port>" value (e.g. "127.0.0.1:9090"), or empty string to not expose.
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matrix_prometheus_container_http_host_bind_port: ''
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# Default prometheus configuration template which covers the generic use case.
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# You can customize it by controlling the various variables inside it.
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#
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# For a more advanced customization, you can extend the default (see `matrix_prometheus_configuration_extension_yaml`)
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# or completely replace this variable with your own template.
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matrix_prometheus_configuration_yaml: "{{ lookup('template', 'templates/prometheus.yml.j2') }}"
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matrix_prometheus_configuration_extension_yaml: |
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# Your custom YAML configuration goes here.
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# This configuration extends the default starting configuration (`matrix_prometheus_configuration_yaml`).
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#
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# You can override individual variables from the default configuration, or introduce new ones.
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#
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# If you need something more special, you can take full control by
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# completely redefining `matrix_prometheus_configuration_yaml`.
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matrix_prometheus_configuration_extension: "{{ matrix_prometheus_configuration_extension_yaml|from_yaml if matrix_prometheus_configuration_extension_yaml|from_yaml is mapping else {} }}"
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# Holds the final configuration (a combination of the default and its extension).
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# You most likely don't need to touch this variable. Instead, see `matrix_prometheus_configuration_yaml`.
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matrix_prometheus_configuration: "{{ matrix_prometheus_configuration_yaml|from_yaml|combine(matrix_prometheus_configuration_extension, recursive=True) }}"
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@ -0,0 +1,5 @@
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- set_fact:
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matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-prometheus.service'] }}"
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when: matrix_prometheus_enabled|bool
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- import_tasks: "{{ role_path }}/tasks/init.yml"
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tags:
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- always
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- import_tasks: "{{ role_path }}/tasks/validate_config.yml"
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when: run_setup|bool
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tags:
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- setup-all
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- setup-prometheus
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- import_tasks: "{{ role_path }}/tasks/setup.yml"
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tags:
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- setup-all
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- setup-prometheus
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---
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#
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# Tasks related to setting up matrix-prometheus
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#
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- name: Ensure matrix-prometheus image is pulled
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docker_image:
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name: "{{ matrix_prometheus_docker_image }}"
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source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
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force_source: "{{ matrix_prometheus_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
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force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_prometheus_docker_image_force_pull }}"
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when: "matrix_prometheus_enabled|bool"
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- name: Ensure Prometheus paths exists
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file:
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path: "{{ item }}"
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state: directory
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mode: 0750
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owner: "{{ matrix_user_username }}"
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group: "{{ matrix_user_groupname }}"
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with_items:
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- "{{ matrix_prometheus_base_path }}"
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- "{{ matrix_prometheus_config_path }}"
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- "{{ matrix_prometheus_data_path }}"
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when: matrix_prometheus_enabled|bool
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- name: Ensure prometheus.yml installed
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copy:
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content: "{{ matrix_prometheus_configuration|to_nice_yaml }}"
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dest: "{{ matrix_prometheus_config_path }}/prometheus.yml"
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mode: 0644
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owner: "{{ matrix_user_username }}"
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group: "{{ matrix_user_groupname }}"
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when: matrix_prometheus_enabled|bool
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- name: Download synapse-v2.rules
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get_url:
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url: "{{ matrix_synapse_prometheus_rules_download_url }}"
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dest: "{{ matrix_prometheus_config_path }}/synapse-v2.rules"
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force: true
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mode: 0440
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owner: "{{ matrix_user_username }}"
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group: "{{ matrix_user_groupname }}"
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when: matrix_prometheus_enabled|bool
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- name: Ensure matrix-prometheus.service installed
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template:
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src: "{{ role_path }}/templates/systemd/matrix-prometheus.service.j2"
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dest: "{{ matrix_systemd_path }}/matrix-prometheus.service"
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mode: 0644
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register: matrix_prometheus_systemd_service_result
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when: matrix_prometheus_enabled|bool
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- name: Ensure systemd reloaded after matrix-prometheus.service installation
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service:
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daemon_reload: yes
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when: "matrix_prometheus_enabled|bool and matrix_prometheus_systemd_service_result.changed"
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#
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# Tasks related to getting rid of matrix-prometheus (if it was previously enabled)
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#
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- name: Check existence of matrix-prometheus service
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stat:
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path: "{{ matrix_systemd_path }}/matrix-prometheus.service"
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register: matrix_prometheus_service_stat
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- name: Ensure matrix-prometheus is stopped
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service:
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name: matrix-prometheus
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state: stopped
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daemon_reload: yes
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register: stopping_result
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when: "not matrix_prometheus_enabled|bool and matrix_prometheus_service_stat.stat.exists"
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- name: Ensure matrix-prometheus.service doesn't exist
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file:
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path: "{{ matrix_systemd_path }}/matrix-prometheus.service"
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state: absent
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when: "not matrix_prometheus_enabled|bool and matrix_prometheus_service_stat.stat.exists"
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- name: Ensure systemd reloaded after matrix-prometheus.service removal
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service:
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daemon_reload: yes
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when: "not matrix_prometheus_enabled|bool and matrix_prometheus_service_stat.stat.exists"
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- name: Ensure matrix-prometheus Docker image doesn't exist
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docker_image:
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name: "{{ matrix_prometheus_docker_image }}"
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state: absent
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when: "not matrix_prometheus_enabled|bool"
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@ -0,0 +1,7 @@
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---
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- name: Fail if Synapse metrics not enabled
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fail:
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msg: >
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You need to enable `matrix_synapse_metrics_enabled` for Prometheus grab metrics.
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when: "not matrix_synapse_metrics_enabled"
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@ -0,0 +1,35 @@
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#jinja2: lstrip_blocks: "True"
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global:
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scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
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evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
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# scrape_timeout is set to the global default (10s).
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# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
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rule_files:
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{% if matrix_synapse_metrics_enabled %}
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- 'synapse-v2.rules'
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{% endif %}
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# A scrape configuration containing exactly one endpoint to scrape:
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# Here it's Prometheus itself.
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scrape_configs:
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# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
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- job_name: 'prometheus'
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# Override the global default and scrape targets from this job every 5 seconds.
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scrape_interval: 5s
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scrape_timeout: 5s
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# metrics_path defaults to '/metrics'
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# scheme defaults to 'http'.
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static_configs:
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- targets: ['localhost:9090']
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{% if matrix_synapse_metrics_enabled %}
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- job_name: 'synapse'
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metrics_path: '/_synapse/metrics'
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static_configs:
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- targets: ['matrix-synapse:{{ matrix_synapse_metrics_port }}']
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{% endif %}
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@ -0,0 +1,42 @@
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#jinja2: lstrip_blocks: "True"
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[Unit]
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Description=matrix-prometheus
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{% for service in matrix_prometheus_systemd_required_services_list %}
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Requires={{ service }}
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After={{ service }}
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{% endfor %}
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{% for service in matrix_prometheus_systemd_wanted_services_list %}
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Wants={{ service }}
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{% endfor %}
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DefaultDependencies=no
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[Service]
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Type=simple
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Environment="HOME={{ matrix_systemd_unit_home_path }}"
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ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-prometheus 2>/dev/null'
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ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-prometheus 2>/dev/null'
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ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-prometheus \
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--log-driver=none \
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--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
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--cap-drop=ALL \
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--network={{ matrix_docker_network }} \
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{% if matrix_prometheus_container_http_host_bind_port %}
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-p {{ matrix_prometheus_container_http_host_bind_port }}:9090 \
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{% endif %}
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-v {{ matrix_prometheus_config_path }}:/etc/prometheus:z \
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-v {{ matrix_prometheus_data_path }}:/prometheus:z \
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{% for arg in matrix_prometheus_container_extra_arguments %}
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{{ arg }} \
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{% endfor %}
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{{ matrix_prometheus_docker_image }}
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ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-prometheus 2>/dev/null'
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ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-prometheus 2>/dev/null'
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Restart=always
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RestartSec=30
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SyslogIdentifier=matrix-prometheus
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[Install]
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WantedBy=multi-user.target
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