feat(kubernetes): Traefik load balancer

2016-09-07 16:46:05 +02:00
parent 31b91bc31a
commit 67a7e28c12
5 changed files with 461 additions and 0 deletions
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+# Traefik load balancer
+
+### Info:
+
+ This template deploys traefik active load balancer on top of Rancher. It would be deployed in hosts with label **traefik_lb=true**.
+
+### Config:
+
+- Replicas: Number of pods to deploy. It should be the same of hosts whith traefik_lb=true
+- Kubernetes Namespace = Kubernetes namespace to deploy de repservers lication controller
+- Http port = 80  # Port exposed to get access to the published services.
+- Https port = 443  # Port exposed to get access to the published services.
+- Admin port = 8000  # Port exposed to get admin access to the traefik service.
+
+
+### Service configuration:
+
+You have to create Ingress objects in order to get included in traefik dynamic config. Example:
+
+```
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: foo
+  namespace: default
+spec:
+  rules:
+  - host: foo.bar.com
+    http:
+      paths:
+      - backend:
+          serviceName: foo
+          servicePort: 8080
+```
+
+### Usage:
+
+- Select Traefik from catalog.
+- Review configuration options.
+- Click deploy.
+- Services with Ingress will be accessed throught hosts whith traefik_lb=true
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+.catalog:
+  name: traefik
+  version: v1.0.2
+  description: |
+    Traefik load balancer.
+  minimum_rancher_version: v0.59.0
+  maintainer: "German Ramos <german.ramos@gmail.com>"
+  uuid: traefik-0
+  questions:
+    - variable: NAMESPACE
+      default: default
+      label: Kubernetes Namespace
+      required: true
+      type: string
+    - variable: REPLICAS
+      description: Usually match the number of nodes with label traefik_lb=true
+      default: 1
+      label: Replicas
+      required: true
+      type: int
+    - variable: "http_port"
+      description: "Traefik http public port to listen."
+      label: "Http port:"
+      required: true
+      default: 80
+      type: "int"
+    - variable: "https_port"
+      description: "Traefik https public port to listen."
+      label: "Http port:"
+      required: true
+      default: 443
+      type: "int"
+    - variable: "admin_port"
+      description: "Traefik admin public port to listen."
+      label: "Admin port:"
+      required: true
+      default: 8000
+      type: "int"
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+apiVersion: v1
+kind: ReplicationController
+metadata:
+  namespace: ${NAMESPACE}
+  name: traefik-ingress-controller
+  labels:
+    k8s-app: traefik-ingress
+spec:
+  replicas: ${REPLICAS}
+  selector:
+    k8s-app: traefik-ingress
+  template:
+    metadata:
+      labels:
+        k8s-app: traefik-ingress
+        name: traefik-ingress
+    spec:
+      terminationGracePeriodSeconds: 60
+      containers:
+      - image: traefik:v1.0.2
+        name: traefik-ingress
+        ports:
+        - containerPort: 80
+          hostPort: ${http_port}
+        - containerPort: 443
+          hostPort: ${https_port}
+        - containerPort: 8080
+          hostPort: ${admin_port}
+        args:
+        - --web
+        - --kubernetes
+        #- --logLevel=DEBUG
+      nodeSelector:
+        traefik_lb: "true"