add Jaeger distributed tracing

.gitignore

@@ -0,0 +1 @@
+.terraform

README.md

@@ -21,13 +21,17 @@ Monitoring
 
 Log Management
 
--   [Fluentd](https://www.fluentd.org/) log collection and forwarding
--   [Elasticsearch](https://www.elastic.co/) log aggregation
+-   [Fluentd](https://www.fluentd.org/) collection and forwarding
+-   [Elasticsearch](https://www.elastic.co/) aggregation
 -   [Kibana](https://www.elastic.co/products/kibana) querying and visualization
 
-Ingress
+Traffic Ingress
 
--   [Traefik](https://traefik.io/) ingress controller
+-   [Traefik](https://traefik.io/) ingress controller automatically integrated with Jaeger.
+
+Distributed Tracing
+
+-   [Jaeger](https://www.jaegertracing.io/) end to end distributed tracing.
 
 ## Getting Started
 
@@ -37,7 +41,7 @@ Ingress
 -   [kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/)
 -   [helm](https://helm.sh/)
 
-2. If you haven't, create a new Kubernetes cluster with RBAC enabled and ensure that it is the default context `kubectl` is using.
+2. If you haven't, create a new Kubernetes cluster with RBAC enabled and switch to it such that it is the default context `kubectl` is using.
 
 3. Clone this project locally:
 

infra/infra.tf

@@ -6,12 +6,6 @@ module "prometheus" {
   prometheus_server_storage_size        = "${var.prometheus_server_storage_size}"
 }
 
-module "kured" {
-  source = "git::https://github.com/timfpark/terraform-helm-kured.git"
-
-  prometheus_service_endpoint = "${module.prometheus.prometheus_service_endpoint}"
-}
-
 module "grafana" {
   source = "git::https://github.com/timfpark/terraform-helm-grafana.git"
 
@@ -23,17 +17,10 @@ module "grafana" {
   dashboard_yaml = "${file("config/common/grafana-dashboards.yaml")}"
 }
 
-module "traefik" {
-  source = "git::https://github.com/timfpark/terraform-helm-traefik.git"
+module "kured" {
+  source = "git::https://github.com/timfpark/terraform-helm-kured.git"
 
-  ingress_replica_count = "${var.ingress_replica_count}"
-
-  ssl_enabled        = "${var.traefik_ssl_enabled}"
-  ssl_enforced       = "${var.traefik_ssl_enforced}"
-  prometheus_enabled = "true"
-
-  ssl_cert_base64 = "${base64encode(file("config/common/tls/wildcard.domain.io.crt"))}"
-  ssl_key_base64  = "${base64encode(file("config/common/tls/wildcard.domain.io.key"))}"
+  prometheus_service_endpoint = "${module.prometheus.prometheus_service_endpoint}"
 }
 
 module "elasticsearch" {
@@ -55,3 +42,24 @@ module "kibana" {
 
   elasticsearch_client_endpoint = "${module.elasticsearch.elasticsearch_client_endpoint}"
 }
+
+module "jaeger" {
+  source = "git::https://github.com/timfpark/terraform-helm-jaeger.git"
+
+  elasticsearch_client_endpoint = "${module.elasticsearch.elasticsearch_client_endpoint}"
+}
+
+module "traefik" {
+  source = "git::https://github.com/timfpark/terraform-helm-traefik.git"
+
+  ingress_replica_count = "${var.ingress_replica_count}"
+
+  ssl_enabled     = "${var.traefik_ssl_enabled}"
+  ssl_enforced    = "${var.traefik_ssl_enforced}"
+  ssl_cert_base64 = "${base64encode(file("config/common/tls/wildcard.domain.io.crt"))}"
+  ssl_key_base64  = "${base64encode(file("config/common/tls/wildcard.domain.io.key"))}"
+
+  prometheus_enabled    = "true"
+  tracing_enabled       = "true"
+  jaeger_agent_endpoint = "${module.jaeger.agent_endpoint}"
+}

tools/jaeger

@@ -0,0 +1,3 @@
+export JAEGER_POD=$(kubectl get pods -n jaeger  -l "component=query" -o jsonpath="{.items[0].metadata.name}")
+`sleep 1 && open http://localhost:16686/` &
+kubectl -n jaeger port-forward $JAEGER_POD 16686