Adding EFK logging stack

roles/kubernetes-apps/efk/elasticsearch/defaults/main.yml

@@ -0,0 +1,6 @@
+---
+elasticsearch_cpu_limit: 1000m 
+elasticsearch_mem_limit: 0M
+elasticsearch_cpu_requests: 100m
+elasticsearch_mem_requests: 0M
+elasticsearch_service_port: 9200

roles/kubernetes-apps/efk/elasticsearch/meta/main.yml

@@ -0,0 +1,7 @@
+dependencies:
+  - role: download
+    file: "{{ downloads.elasticsearch }}"
+# TODO: bradbeam add in curator
+#       https://github.com/Skillshare/kubernetes-efk/blob/master/configs/elasticsearch.yml#L94
+#  - role: download
+#    file: "{{ downloads.curator }}"

roles/kubernetes-apps/efk/elasticsearch/tasks/main.yml

@@ -0,0 +1,35 @@
+---
+- name: "ElasticSearch | Write ES deployment"
+  template: 
+    src: elasticsearch-deployment.yml.j2
+    dest: "{{ kube_config_dir }}/elasticsearch-deployment.yaml"
+  register: es_deployment_manifest
+
+- name: "ElasticSearch | Create ES deployment"
+  kube:
+    filename: "{{kube_config_dir}}/elasticsearch-deployment.yaml"
+    kubectl: "{{bin_dir}}/kubectl"
+    name: "elasticsearch-logging-v1"
+    namespace: "{{system_namespace}}"
+    resource: "rc"
+    state: "{{ item | ternary('latest','present') }}"
+    #state: "latest"
+  with_items: "{{ es_deployment_manifest.changed }}"
+  run_once: true
+
+- name: "ElasticSearch | Write ES service "
+  template: 
+    src: elasticsearch-service.yml.j2
+    dest: "{{ kube_config_dir }}/elasticsearch-service.yaml"
+  register: es_service_manifest
+
+- name: "ElasticSearch | Create ES service"
+  kube:
+    filename: "{{kube_config_dir}}/elasticsearch-service.yaml"
+    kubectl: "{{bin_dir}}/kubectl"
+    name: "elasticsearch-logging"
+    namespace: "{{system_namespace}}"
+    resource: "svc"
+    state: "{{ item | ternary('latest','present') }}"
+  with_items: "{{ es_service_manifest.changed }}"
+  run_once: true

roles/kubernetes-apps/efk/elasticsearch/templates/elasticsearch-deployment.yml.j2

@@ -0,0 +1,51 @@
+---
+# https://raw.githubusercontent.com/kubernetes/kubernetes/v1.5.2/cluster/addons/fluentd-elasticsearch/es-controller.yaml
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: elasticsearch-logging-v1
+  namespace: "{{ system_namespace }}"
+  labels:
+    k8s-app: elasticsearch-logging
+    version: "{{ elasticsearch_image_tag }}"
+    kubernetes.io/cluster-service: "true"
+spec:
+  replicas: 2
+  selector:
+    k8s-app: elasticsearch-logging
+    version: "{{ elasticsearch_image_tag }}"
+  template:
+    metadata:
+      labels:
+        k8s-app: elasticsearch-logging
+        version: "{{ elasticsearch_image_tag }}"
+        kubernetes.io/cluster-service: "true"
+    spec:
+      containers:
+      - image: "{{ elasticsearch_image_repo }}:{{ elasticsearch_image_tag }}"
+        name: elasticsearch-logging
+        resources:
+          # need more cpu upon initialization, therefore burstable class
+          limits:
+            cpu: {{ elasticsearch_cpu_limit }}
+{% if elasticsearch_mem_limit is defined and elasticsearch_mem_limit != "0M" %}
+            mem: {{ elasticsearch_mem_limit }}
+{% endif %}
+          requests:
+            cpu: {{ elasticsearch_cpu_requests }}
+{% if elasticsearch_mem_requests is defined and elasticsearch_mem_requests != "0M" %}
+            mem: {{ elasticsearch_mem_requests }}
+{% endif %}
+        ports:
+        - containerPort: 9200
+          name: db
+          protocol: TCP
+        - containerPort: 9300
+          name: transport
+          protocol: TCP
+        volumeMounts:
+        - name: es-persistent-storage
+          mountPath: /data
+      volumes:
+      - name: es-persistent-storage
+        emptyDir: {}

roles/kubernetes-apps/efk/elasticsearch/templates/elasticsearch-service.yml.j2

@@ -0,0 +1,18 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: elasticsearch-logging
+  namespace: "{{ system_namespace }}"
+  labels:
+    k8s-app: elasticsearch-logging
+    kubernetes.io/cluster-service: "true"
+    kubernetes.io/name: "Elasticsearch"
+spec:
+  ports:
+  - port: {{ elasticsearch_service_port }}
+    protocol: TCP
+    targetPort: db
+  selector:
+    k8s-app: elasticsearch-logging
+