Fix: prometheus and node_exporter installation

Also add bidirectional <> communications form qed to prometheus

deploy/aws/main.tf

@@ -227,7 +227,7 @@ module "prometheus" {
     - job_name: 'Qed0-HostMetrics'
       scrape_interval: 10s
       static_configs:
-        - targets: ['${module.leader.private_ip}:9100', ]
+        - targets: ['${module.leader.private_ip}:9100']
     - job_name: 'Qed0-QedMetrics'
       scrape_interval: 10s
       static_configs:

deploy/aws/modules/prometheus/main.tf

@@ -79,15 +79,12 @@ resource "aws_instance" "prometheus" {
   sudo yum install -y https://dl.grafana.com/oss/release/grafana-5.4.2-1.x86_64.rpm
   sudo service grafana-server start
 
-  while [ ! -f ${var.path}/prometheus ]; do
-    sleep 1 # INFO: wait until binary exists
+  while [ `lsof ${var.path}/prometheus | wc -l` -gt 0 ]; do
+    sleep 1 # INFO: prevents Error of `text file busy`
   done
-  sleep 1
 
   chmod +x ${var.path}/prometheus
-  nohup ${var.path}/prometheus --config.file=${var.path}/prometheus.yml &
+  ${var.path}/prometheus --config.file=${var.path}/prometheus.yml
 
-
-  
   DATA
 }

deploy/aws/modules/qed/main.tf

@@ -82,6 +82,10 @@ resource "aws_instance" "qed-server" {
   done
 
   chmod +x ${var.path}/qed
+  chmod +x ${var.path}/node_exporter
+
+  ${var.path}/node_exporter &
   ${var.path}/qed ${var.command}
+
   DATA
 }

deploy/aws/network.tf

@@ -75,9 +75,16 @@ module "security_group" {
       to_port         = 65535
       protocol        = "tcp"
       source_security_group_id  = "${module.security_group.this_security_group_id}"
+    },
+    {
+      from_port       = 0
+      to_port         = 65535
+      protocol        = "tcp"
+      source_security_group_id  = "${module.prometheus_security_group.this_security_group_id}"
     }
   ]
-  number_of_computed_ingress_with_source_security_group_id = 1
+
+  number_of_computed_ingress_with_source_security_group_id = 2
 
 }
 

deploy/aws/variables.tf

@@ -4,4 +4,4 @@ variable "aws_profile" {
 
 variable "keypath" {
   default = "~/.ssh/id_rsa_free"
-}
+}