Add framework for provisioning textfile collectors for prometheus

[chef.git] / cookbooks / prometheus / recipes / default.rb

diff --git a/cookbooks/prometheus/recipes/default.rb b/cookbooks/prometheus/recipes/default.rb
index 824af896cae5d1e943be68b7e2406fae9c03e5e3..9df0056be2827d80d0881194246f807212de76d7 100644 (file)
--- a/cookbooks/prometheus/recipes/default.rb
+++ b/cookbooks/prometheus/recipes/default.rb
@@ -17,7 +17,61 @@
 # limitations under the License.
 #
 
+include_recipe "git"
+include_recipe "networking"
+
+if node.internal_ipaddress
+  node.default[:prometheus][:mode] = "internal"
+  node.default[:prometheus][:address] = node.internal_ipaddress
+elsif node[:networking][:wireguard][:enabled]
+  node.default[:prometheus][:mode] = "wireguard"
+  node.default[:prometheus][:address] = node[:networking][:wireguard][:address]
+
+  search(:node, "roles:prometheus") do |server|
+    node.default[:networking][:wireguard][:peers] << {
+      :public_key => server[:networking][:wireguard][:public_key],
+      :allowed_ips => server[:networking][:wireguard][:address],
+      :endpoint => "#{server.name}:51820"
+    }
+  end
+else
+  node.default[:prometheus][:mode] = "external"
+  node.default[:prometheus][:address] = node.external_ipaddress(:family => :inet)
+end
+
+directory "/opt/prometheus" do
+  action :delete
+  owner "root"
+  group "root"
+  mode "755"
+  recursive true
+  not_if { ::Dir.exist?("/opt/prometheus/.git") }
+end
+
+git "/opt/prometheus" do
+  action :sync
+  repository "https://github.com/openstreetmap/prometheus-exporters.git"
+  revision "main"
+  depth 1
+  user "root"
+  group "root"
+end
+
+directory "/etc/prometheus/collectors" do
+  owner "root"
+  group "root"
+  mode "755"
+  recursive true
+end
+
+directory "/var/lib/prometheus/node-exporter" do
+  owner "root"
+  group "root"
+  mode "755"
+  recursive true
+end
+
 prometheus_exporter "node" do
   port 9100
-  package_options "--no-install-recommends"
+  options "--collector.ntp --collector.processes --collector.interrupts --collector.textfile.directory=/var/lib/prometheus/node-exporter"
 end