#
# Cookbook:: kosmos_prometheus
# Recipe:: server
#

include_recipe "firewall"

prometheus_install "prometheus" do
  version node["prometheus"]["version"]
  checksum node["prometheus"]["checksum"]
end

prometheus_config "prometheus" do
  global_config(
    "scrape_interval" => "30s",
    "evaluation_interval" => "30s"
  )
end

prometheus_job "prometheus" do
  target "localhost:9090"
end

prometheus_job "node" do
  target "localhost:9100"
end

with_run_context :root do
  execute "reload prometheus config" do
    command "systemctl reload prometheus.service"
    action :nothing
    subscribes :run, "template[/opt/prometheus/prometheus.yml]", :delayed
  end
end

prometheus_service "prometheus" do
  cli_options({
    "config.file" => "/opt/prometheus/prometheus.yml",
    "log.level" => "info",
    "query.max-concurrency" => 20,
    "query.lookback-delta" => "5m",
    "query.timeout" => "2m",
    "storage.tsdb.path" => "/var/lib/prometheus",
    "storage.tsdb.retention.time" => "15d",
    "web.listen-address" => ":9090"
  })
end

firewall_rule "prometheus web" do
  port 9090
  source "10.1.1.0/24"
  protocol :tcp
  command :allow
end