adding otel_demo capabilities

Author: hiimkyle

workshop/aws/ec2/main.tf

@@ -183,6 +183,7 @@ locals {
     realm             = var.splunk_realm
     presetup          = var.splunk_presetup
     jdk               = var.splunk_jdk
+    otel_demo          = var.otel_demo
     instance_password = random_string.password.result
   }
 }
@@ -219,5 +220,10 @@ resource "aws_instance" "observability-instance" {
       condition     = var.splunk_presetup ? try(var.splunk_access_token, "") != "" && try(var.splunk_realm, "") != "" && try(var.splunk_rum_token, "") != "" : true
       error_message = "When requesting a pre-setup instance, splunk_realm, splunk_access_token and splunk_rum_token are required and cannot be null/empty"
     }
+    precondition {
+      # if otel_demo=true, tokens and realm cannot be empty. also presetup cannot also be true.
+      condition     = var.otel_demo ? try(var.splunk_access_token, "") != "" && try(var.splunk_realm, "") != "" && try(var.splunk_rum_token, "") != "" && try(var.splunk_presetup, "") == false : true
+      error_message = "When requesting an otel_demo, splunk_realm, splunk_access_token and splunk_rum_token are required and cannot be null/empty. splunk_presetup variable must also be set to false. "
+    }
   }
 }

workshop/aws/ec2/templates/userdata.yaml

@@ -85,6 +85,22 @@ write_files:
       fi
 %{ endif ~}
 
+%{ if otel_demo == true ~}
+      export RUM_TOKEN=${rum_token}
+      mkdir otel-demo && cd otel-demo
+      curl -o otel-demo-collector.yaml https://raw.githubusercontent.com/splunk/observability-workshop/main/oteldemo/otel-demo-collector.yaml
+      curl -o otel-demo.yaml https://raw.githubusercontent.com/splunk/observability-workshop/main/oteldemo/otel-demo.yaml
+      if [ ! -f ~/.helmok ]; then
+        helm repo add splunk-otel-collector-chart https://signalfx.github.io/splunk-otel-collector-chart
+        helm repo update
+        helm install splunk-otel-collector --set="splunkObservability.realm=$REALM" --set="splunkObservability.accessToken=$ACCESS_TOKEN" --set="clusterName=$(hostname)-k3s-cluster" --set="splunkObservability.logsEnabled=true" --set="logsEngine=otel" --set="splunkObservability.profilingEnabled=true" --set="splunkObservability.infrastructureMonitoringEventsEnabled=true" --set="networkExplorer.enabled=true" --set="networkExplorer.podSecurityPolicy.enabled=false" --set="agent.enabled=true" --set="gateway.replicaCount=1" --set="gateway.resources.limits.cpu=500m" --set="gateway.resources.limits.memory=1Gi" --set="clusterReceiver.enabled=true" --set="environment=$(hostname)-apm-env" splunk-otel-collector-chart/splunk-otel-collector -f otel-demo-collector.yaml
+        helm repo add open-telemetry https://open-telemetry.github.io/opentelemetry-helm-charts
+        helm install my-otel-demo open-telemetry/opentelemetry-demo --values otel-demo.yaml
+        cd /home/ubuntu
+      fi
+%{ endif ~}
+
+
       export KUBECONFIG=/home/ubuntu/.kube/config
       alias kc='kubectl'
       alias dc='docker-compose'

workshop/aws/ec2/terraform.tfvars.template

@@ -11,3 +11,4 @@ splunk_realm = ""
 # optional
 splunk_presetup = false
 splunk_jdk = false
+otel_demo = false

workshop/aws/ec2/variables.tf

@@ -16,6 +16,12 @@ variable "splunk_jdk" {
   default     = false
 }
 
+variable "otel_demo" {
+  description = "Spin up the OpenTelemetry Telescope shop demo? (true/false)"
+  type        = bool
+  default     = false
+}
+
 variable "aws_instance_count" {
   description = "Instance Count (Usually 1)"
   nullable    = false