commit f6bdb4dac75d258b536fe128cc1fef6a36754af9 Author: mathieui Date: Mon Jan 4 22:30:50 2021 +0100 Initial commit diff --git a/README.md b/README.md new file mode 100644 index 0000000..28a56cf --- /dev/null +++ b/README.md @@ -0,0 +1,18 @@ +# Monitoring server role + +Installs prometheus and grafana, make prometheus listen to localhost and +grafana listen to the VPN interface only. + +scrape hosts defined in the inventory (todo: check that this works) + +# Expected host vars + +**vpn_ip** + +# Expected inventory config + +``` +[vpn_hosts] +host1 vpn_ip=… ansible_host=… +hosT2 vpn_ip=… ansible_host=… +``` diff --git a/files/prometheus b/files/prometheus new file mode 100644 index 0000000..5eaaabf --- /dev/null +++ b/files/prometheus @@ -0,0 +1 @@ +PROMETHEUS_ARGS="--web.listen-address localhost:9090" diff --git a/files/prometheus.yml b/files/prometheus.yml new file mode 100644 index 0000000..18774f0 --- /dev/null +++ b/files/prometheus.yml @@ -0,0 +1,26 @@ +## prometheus.yml ## + +global: + scrape_interval: 15s # By default, scrape targets every 15 seconds. + evaluation_interval: 15s # By default, scrape targets every 15 seconds. + # scrape_timeout is set to the global default (10s). + + # Attach these extra labels to all time-series collected by this Prometheus instance. + external_labels: + monitor: 'prometheus-monitor' + +rule_files: + - '/etc/prometheus/alert.rules' + +# A scrape configuration containing exactly one endpoint to scrape: +scrape_configs: +# The job name is added as a label `job=` to any timeseries scraped from this config. + + - job_name: 'node_exporter' + scrape_interval: 15s + static_configs: + - targets: +{% for host in vpn_hosts %} + - '{{ host.vpn_ip }}:9100' +{% endfor %} + diff --git a/tasks/main.yml b/tasks/main.yml new file mode 100644 index 0000000..7e623d6 --- /dev/null +++ b/tasks/main.yml @@ -0,0 +1,36 @@ +--- + +- name: Install prometheus and grafana + community.general.pacman: + state: present + name: + - prometheus + - grafana + +- name: Install prometheus conf + copy: + dest: /etc/prometheus/prometheus.yml + src: prometheus.yml + +- name: Install prometheus custom args + copy: + dest: /etc/conf.d/prometheus + src: prometheus + +- name: Enable prometheus + systemd: + enabled: true + state: started + name: prometheus + +- name: Install grafana conf + template: + src: grafana.ini.j2 + dest: /etc/grafana.ini + mode: 0644 + +- name: Enable grafana + systemd: + enabled: true + state: started + name: grafana diff --git a/templates/grafana.ini.j2 b/templates/grafana.ini.j2 new file mode 100644 index 0000000..f72676a --- /dev/null +++ b/templates/grafana.ini.j2 @@ -0,0 +1,849 @@ +##################### Grafana Configuration Example ##################### +# +# Everything has defaults so you only need to uncomment things you want to +# change + +# possible values : production, development +;app_mode = production + +# instance name, defaults to HOSTNAME environment variable value or hostname if HOSTNAME var is empty +;instance_name = ${HOSTNAME} + +#################################### Paths #################################### +[paths] +# Path to where grafana can store temp files, sessions, and the sqlite3 db (if that is used) +;data = /var/lib/grafana + +# Temporary files in `data` directory older than given duration will be removed +;temp_data_lifetime = 24h + +# Directory where grafana can store logs +;logs = /var/log/grafana + +# Directory where grafana will automatically scan and look for plugins +;plugins = /var/lib/grafana/plugins + +# folder that contains provisioning config files that grafana will apply on startup and while running. +;provisioning = conf/provisioning + +#################################### Server #################################### +[server] +# Protocol (http, https, h2, socket) +protocol = http + +# The ip address to bind to, empty will bind to all interfaces +http_addr = {{ vpn_ip }} + +# The http port to use +http_port = 3000 + +# The public facing domain name used to access grafana from a browser +;domain = localhost + +# Redirect to correct domain if host header does not match domain +# Prevents DNS rebinding attacks +;enforce_domain = false + +# The full public facing url you use in browser, used for redirects and emails +# If you use reverse proxy and sub path specify full url (with sub path) +;root_url = %(protocol)s://%(domain)s:%(http_port)s/ + +# Serve Grafana from subpath specified in `root_url` setting. By default it is set to `false` for compatibility reasons. +;serve_from_sub_path = false + +# Log web requests +;router_logging = false + +# the path relative working path +;static_root_path = public + +# enable gzip +;enable_gzip = false + +# https certs & key file +;cert_file = +;cert_key = + +# Unix socket path +;socket = + +#################################### Database #################################### +[database] +# You can configure the database connection by specifying type, host, name, user and password +# as separate properties or as on string using the url properties. + +# Either "mysql", "postgres" or "sqlite3", it's your choice +;type = sqlite3 +;host = 127.0.0.1:3306 +;name = grafana +;user = root +# If the password contains # or ; you have to wrap it with triple quotes. Ex """#password;""" +;password = + +# Use either URL or the previous fields to configure the database +# Example: mysql://user:secret@host:port/database +;url = + +# For "postgres" only, either "disable", "require" or "verify-full" +;ssl_mode = disable + +;ca_cert_path = +;client_key_path = +;client_cert_path = +;server_cert_name = + +# For "sqlite3" only, path relative to data_path setting +;path = grafana.db + +# Max idle conn setting default is 2 +;max_idle_conn = 2 + +# Max conn setting default is 0 (mean not set) +;max_open_conn = + +# Connection Max Lifetime default is 14400 (means 14400 seconds or 4 hours) +;conn_max_lifetime = 14400 + +# Set to true to log the sql calls and execution times. +;log_queries = + +# For "sqlite3" only. cache mode setting used for connecting to the database. (private, shared) +;cache_mode = private + +#################################### Cache server ############################# +[remote_cache] +# Either "redis", "memcached" or "database" default is "database" +;type = database + +# cache connectionstring options +# database: will use Grafana primary database. +# redis: config like redis server e.g. `addr=127.0.0.1:6379,pool_size=100,db=0,ssl=false`. Only addr is required. ssl may be 'true', 'false', or 'insecure'. +# memcache: 127.0.0.1:11211 +;connstr = + +#################################### Data proxy ########################### +[dataproxy] + +# This enables data proxy logging, default is false +;logging = false + +# How long the data proxy waits before timing out, default is 30 seconds. +# This setting also applies to core backend HTTP data sources where query requests use an HTTP client with timeout set. +;timeout = 30 + +# How many seconds the data proxy waits before sending a keepalive probe request. +;keep_alive_seconds = 30 + +# How many seconds the data proxy waits for a successful TLS Handshake before timing out. +;tls_handshake_timeout_seconds = 10 + +# How many seconds the data proxy will wait for a server's first response headers after +# fully writing the request headers if the request has an "Expect: 100-continue" +# header. A value of 0 will result in the body being sent immediately, without +# waiting for the server to approve. +;expect_continue_timeout_seconds = 1 + +# The maximum number of idle connections that Grafana will keep alive. +;max_idle_connections = 100 + +# How many seconds the data proxy keeps an idle connection open before timing out. +;idle_conn_timeout_seconds = 90 + +# If enabled and user is not anonymous, data proxy will add X-Grafana-User header with username into the request, default is false. +;send_user_header = false + +#################################### Analytics #################################### +[analytics] +# Server reporting, sends usage counters to stats.grafana.org every 24 hours. +# No ip addresses are being tracked, only simple counters to track +# running instances, dashboard and error counts. It is very helpful to us. +# Change this option to false to disable reporting. +;reporting_enabled = true + +# Set to false to disable all checks to https://grafana.net +# for new versions (grafana itself and plugins), check is used +# in some UI views to notify that grafana or plugin update exists +# This option does not cause any auto updates, nor send any information +# only a GET request to http://grafana.com to get latest versions +;check_for_updates = true + +# Google Analytics universal tracking code, only enabled if you specify an id here +;google_analytics_ua_id = + +# Google Tag Manager ID, only enabled if you specify an id here +;google_tag_manager_id = + +#################################### Security #################################### +[security] +# disable creation of admin user on first start of grafana +;disable_initial_admin_creation = false + +# default admin user, created on startup +;admin_user = admin + +# default admin password, can be changed before first start of grafana, or in profile settings +;admin_password = admin + +# used for signing +;secret_key = SW2YcwTIb9zpOOhoPsMm + +# disable gravatar profile images +;disable_gravatar = false + +# data source proxy whitelist (ip_or_domain:port separated by spaces) +;data_source_proxy_whitelist = + +# disable protection against brute force login attempts +;disable_brute_force_login_protection = false + +# set to true if you host Grafana behind HTTPS. default is false. +;cookie_secure = false + +# set cookie SameSite attribute. defaults to `lax`. can be set to "lax", "strict", "none" and "disabled" +;cookie_samesite = lax + +# set to true if you want to allow browsers to render Grafana in a ,