From f0e65f6846bce9b30f8a97bfab68a06795b730ed Mon Sep 17 00:00:00 2001 From: Christian Pointner Date: Thu, 3 Jun 2021 15:14:23 +0200 Subject: prometheus: add blackbox exporter --- .../prometheus/exporter/blackbox/defaults/main.yml | 22 ++++++++++ .../prometheus/exporter/blackbox/handlers/main.yml | 16 ++++++++ .../prometheus/exporter/blackbox/tasks/main.yml | 39 ++++++++++++++++++ .../exporter/blackbox/templates/config.yml.j2 | 4 ++ .../exporter/blackbox/templates/service.j2 | 32 +++++++++++++++ .../prometheus/exporter/node/templates/service.j2 | 2 +- .../monitoring/prometheus/server/handlers/main.yml | 5 +++ roles/monitoring/prometheus/server/tasks/main.yml | 2 +- .../prometheus/server/templates/prometheus.yml.j2 | 48 ++++++++++++++++++++++ 9 files changed, 168 insertions(+), 2 deletions(-) create mode 100644 roles/monitoring/prometheus/exporter/blackbox/defaults/main.yml create mode 100644 roles/monitoring/prometheus/exporter/blackbox/handlers/main.yml create mode 100644 roles/monitoring/prometheus/exporter/blackbox/tasks/main.yml create mode 100644 roles/monitoring/prometheus/exporter/blackbox/templates/config.yml.j2 create mode 100644 roles/monitoring/prometheus/exporter/blackbox/templates/service.j2 (limited to 'roles/monitoring') diff --git a/roles/monitoring/prometheus/exporter/blackbox/defaults/main.yml b/roles/monitoring/prometheus/exporter/blackbox/defaults/main.yml new file mode 100644 index 00000000..fcf66555 --- /dev/null +++ b/roles/monitoring/prometheus/exporter/blackbox/defaults/main.yml @@ -0,0 +1,22 @@ +--- +prometheus_exporter_blackbox_modules: + icmp: + prober: icmp + tcp_connect: + prober: tcp + tcp_tls: + prober: tcp + tcp: + tls: true + tls_config: + insecure_skip_verify: true + http_2xx: + prober: http + ssh_banner: + prober: tcp + tcp: + query_response: + - expect: "^SSH-2.0-" + - send: "SSH-2.0-blackbox-ssh-check" + +prometheus_exporter_blackbox_modules_extra: {} diff --git a/roles/monitoring/prometheus/exporter/blackbox/handlers/main.yml b/roles/monitoring/prometheus/exporter/blackbox/handlers/main.yml new file mode 100644 index 00000000..99a416e2 --- /dev/null +++ b/roles/monitoring/prometheus/exporter/blackbox/handlers/main.yml @@ -0,0 +1,16 @@ +--- +- name: restart prometheus-blackbox-exporter + service: + name: prometheus-blackbox-exporter + state: restarted + +- name: reload prometheus-blackbox-exporter + service: + name: prometheus-blackbox-exporter + state: reloaded + +- name: reload prometheus-exporter-exporter + service: + name: prometheus-exporter-exporter + ## TODO: implement reload once exporter_exporter supports this... + state: restarted diff --git a/roles/monitoring/prometheus/exporter/blackbox/tasks/main.yml b/roles/monitoring/prometheus/exporter/blackbox/tasks/main.yml new file mode 100644 index 00000000..3b8e997d --- /dev/null +++ b/roles/monitoring/prometheus/exporter/blackbox/tasks/main.yml @@ -0,0 +1,39 @@ +--- +- name: install apt packages + apt: + name: prom-exporter-blackbox + state: present + +- name: create config directory + file: + path: /etc/prometheus/exporter/blackbox + state: directory + +- name: generate configuration + template: + src: config.yml.j2 + dest: /etc/prometheus/exporter/blackbox/config.yml + notify: reload prometheus-blackbox-exporter + +- name: generate systemd service unit + template: + src: service.j2 + dest: /etc/systemd/system/prometheus-blackbox-exporter.service + notify: restart prometheus-blackbox-exporter + +- name: make sure prometheus-exporter-exporter is enabled and started + systemd: + name: prometheus-blackbox-exporter.service + daemon_reload: yes + state: started + enabled: yes + +- name: register exporter + copy: + content: | + method: http + http: + port: 9115 + path: '/probe' + dest: /etc/prometheus/exporter/enabled/blackbox.yml + notify: reload prometheus-exporter-exporter diff --git a/roles/monitoring/prometheus/exporter/blackbox/templates/config.yml.j2 b/roles/monitoring/prometheus/exporter/blackbox/templates/config.yml.j2 new file mode 100644 index 00000000..01e3f7a0 --- /dev/null +++ b/roles/monitoring/prometheus/exporter/blackbox/templates/config.yml.j2 @@ -0,0 +1,4 @@ +# {{ ansible_managed }} + +modules: + {{ prometheus_exporter_blackbox_modules | combine(prometheus_exporter_blackbox_modules_extra) | to_nice_yaml(indent=2) | indent(2)}} diff --git a/roles/monitoring/prometheus/exporter/blackbox/templates/service.j2 b/roles/monitoring/prometheus/exporter/blackbox/templates/service.j2 new file mode 100644 index 00000000..c9c5712c --- /dev/null +++ b/roles/monitoring/prometheus/exporter/blackbox/templates/service.j2 @@ -0,0 +1,32 @@ +[Unit] +Description=Prometheus blackbox exporter + +[Service] +Restart=always +User=prometheus-exporter +ExecStart=/usr/bin/prometheus-blackbox-exporter --web.listen-address="127.0.0.1:9115" --config.file=/etc/prometheus/exporter/blackbox/config.yml +ExecReload=/bin/kill -HUP $MAINPID + +# systemd hardening-options +AmbientCapabilities=CAP_NET_RAW +CapabilityBoundingSet=CAP_NET_RAW +DeviceAllow=/dev/null rw +DevicePolicy=strict +LockPersonality=true +MemoryDenyWriteExecute=true +NoNewPrivileges=true +PrivateDevices=true +PrivateTmp=true +PrivateUsers=true +ProtectControlGroups=true +ProtectHome=true +ProtectKernelModules=true +ProtectKernelTunables=true +ProtectSystem=strict +RemoveIPC=true +RestrictNamespaces=true +RestrictRealtime=true +SystemCallArchitectures=native + +[Install] +WantedBy=multi-user.target diff --git a/roles/monitoring/prometheus/exporter/node/templates/service.j2 b/roles/monitoring/prometheus/exporter/node/templates/service.j2 index 801850ed..7aa2834a 100644 --- a/roles/monitoring/prometheus/exporter/node/templates/service.j2 +++ b/roles/monitoring/prometheus/exporter/node/templates/service.j2 @@ -1,5 +1,5 @@ [Unit] -Description=Prometheus exporter +Description=Prometheus node exporter [Service] Restart=always diff --git a/roles/monitoring/prometheus/server/handlers/main.yml b/roles/monitoring/prometheus/server/handlers/main.yml index edeba752..bf8735e9 100644 --- a/roles/monitoring/prometheus/server/handlers/main.yml +++ b/roles/monitoring/prometheus/server/handlers/main.yml @@ -3,3 +3,8 @@ service: name: prometheus state: restarted + +- name: reload prometheus + service: + name: prometheus + state: reloaded diff --git a/roles/monitoring/prometheus/server/tasks/main.yml b/roles/monitoring/prometheus/server/tasks/main.yml index 61660a03..6b030fb4 100644 --- a/roles/monitoring/prometheus/server/tasks/main.yml +++ b/roles/monitoring/prometheus/server/tasks/main.yml @@ -54,7 +54,7 @@ template: src: prometheus.yml.j2 dest: /etc/prometheus/prometheus.yml - notify: restart prometheus + notify: reload prometheus - name: generate systemd service unit template: diff --git a/roles/monitoring/prometheus/server/templates/prometheus.yml.j2 b/roles/monitoring/prometheus/server/templates/prometheus.yml.j2 index e94ea043..eb77d6d1 100644 --- a/roles/monitoring/prometheus/server/templates/prometheus.yml.j2 +++ b/roles/monitoring/prometheus/server/templates/prometheus.yml.j2 @@ -1,3 +1,5 @@ +# {{ ansible_managed }} + global: scrape_interval: 15s evaluation_interval: 15s @@ -27,3 +29,49 @@ scrape_configs: - files: - "/etc/prometheus/jobs/{{ job }}/*.yml" {% endfor %} + + ## TODO: temporary test + - job_name: 'ping' + metrics_path: /proxy + params: + module: + - blackbox + - icmp + scheme: https + tls_config: + ca_file: /etc/ssl/prometheus/ca-crt.pem + cert_file: /etc/ssl/prometheus/server/exporter-crt.pem + key_file: /etc/ssl/prometheus/server/exporter-key.pem + static_configs: + - targets: + - 62.99.185.129 + - 9.9.9.9 + relabel_configs: + - source_labels: [__address__] + target_label: __param_target + - source_labels: [__param_target] + target_label: instance + - target_label: __address__ + replacement: 192.168.32.230:9999 + + - job_name: 'tcp_tls' + metrics_path: /proxy + params: + module: + - blackbox + - tcp_tls + scheme: https + tls_config: + ca_file: /etc/ssl/prometheus/ca-crt.pem + cert_file: /etc/ssl/prometheus/server/exporter-crt.pem + key_file: /etc/ssl/prometheus/server/exporter-key.pem + static_configs: + - targets: + - web.chaos-at-home.org:443 + relabel_configs: + - source_labels: [__address__] + target_label: __param_target + - source_labels: [__param_target] + target_label: instance + - target_label: __address__ + replacement: 192.168.32.230:9999 -- cgit v1.2.3