[HWORKS-378] Enable metrics endpoints for consul agents (#42)

* [HWORKS-378] Enable metrics endpoints for consul agents

* Add a parameter for the consul server RPC port

attributes/default.rb

@@ -14,6 +14,7 @@
 default['consul']['configure_resolv_conf']      = "true"
 default['consul']['effective_resolv_conf']      = ""
 default['consul']['http_api_port']              = "8501"
+default['consul']['rpc_port']                   = "8300"
 default['consul']['domain']                     = "consul"
 
 default['consul']['bind_address']               = ""
@@ -29,4 +30,6 @@
 
 default['consul']['health-check']['retryable-check-file'] = "#{node['consul']['bin_dir']}/retryable_health_check.sh"
 default['consul']['health-check']['max-attempts']         = 7
-default['consul']['health-check']['multiplier']           = 1.2
+default['consul']['health-check']['multiplier']           = 1.2
+
+default['consul']['metrics']['prometheus_retention_time'] = "1m"

metadata.rb

@@ -51,6 +51,10 @@
 attribute "consul/http_api_port",
           :description => "Port of agent HTTP API",
           :type => 'string'
+
+attribute "consul/rpc_port",
+          :description => "RPC Server port",
+          :type => 'string'
 
 attribute "consul/domain",
           :description => "Domain to be handled by Consul",
@@ -91,3 +95,7 @@
 attribute "consul/health-check/multiplier",
           :description => "If a health check fails it will retry for max-attempts before being declared as dead. This attribute controls the sleep interval between consecutive attempts",
           :type => 'string'
+
+attribute "consul/metrics/prometheus_retention_time",
+          :description => "Retention time for Prometheus metrics",
+          :type => 'string'

templates/default/config/master.hcl.erb

@@ -23,5 +23,10 @@ cert_file = "<%= @certificate %>"
 key_file = "<%= @key %>"
 ports = {
    http = -1,
-   https = <%= node['consul']['http_api_port'] %>
-}
+   https = <%= node['consul']['http_api_port'] %>,
+   server = <%= node['consul']['rpc_port'] %>
+}
+telemetry = {
+   prometheus_retention_time = "<%= node['consul']['metrics']['prometheus_retention_time'] %>",
+   disable_hostname = true
+}

templates/default/config/slave.hcl.erb

@@ -18,5 +18,10 @@ cert_file = "<%= @certificate %>"
 key_file = "<%= @key %>"
 ports = {
    http = -1,
-   https = <%= node['consul']['http_api_port'] %>
-}
+   https = <%= node['consul']['http_api_port'] %>,
+   server = <%= node['consul']['rpc_port'] %>
+}
+telemetry = {
+   prometheus_retention_time = "<%= node['consul']['metrics']['prometheus_retention_time'] %>",
+   disable_hostname = true
+}