优化

docker/simple/k8s/README.md

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+Its doc will tell you how to deploy `Tailchat` in kubeneters.
+
+## One Command 
+
+```bash
+kubectl apply -f namespace.yml -f pv.yml -f mongo.yml -f minio.yml -f redis.yml -f tailchat.yml
+```
+
+### Delete
+
+if you wanna delete all resource, just delete namespace.
+
+```bash
+kubectl delete -f namespace.yml
+```
+
+## Setup one by one
+
+### Create Namespace
+
+```bash
+kubectl apply -f namespace.yml
+```
+
+### Create Persistent Volume
+
+```bash
+kubectl apply -f pv.yml
+```
+
+### Create Mongodb
+
+```bash
+kubectl apply -f mongo.yml
+```
+
+### Create Minio
+
+```bash
+kubectl apply -f minio.yml
+```
+
+### Create Redis
+
+```bash
+kubectl apply -f redis.yml
+```
+
+### Create Tailchat
+
+```bash
+kubectl apply -f tailchat.yml
+```
+
+## Check tailchat-service work
+
+#### get services ClusterIP
+```bash
+kubectl get svc -n tailchat
+```
+
+#### create test container in kubernetes
+
+```bash
+kubectl run -it --rm test-pod --image=busybox --restart=Never
+```
+
+#### request health and checkout `nodeID`, send multi times.
+```
+wget -q -O - http://<tailchat-cluster-ip>:11000/health
+```
+
+## Router and Load Balance
+
+For example, we use traefik.
+
+### Install Traefik provider
+
+```bash
+helm repo add traefik https://helm.traefik.io/traefik
+helm install traefik traefik/traefik -n tailchat
+```
+
+### Apply Ingress Config
+
+```bash
+kubectl apply -f ingress.yml
+```
+
+### Check Status
+
+```bash
+kubectl get services -n tailchat
+```
+
+If every is ok, its should be like this:
+
+![](./images/traefik-svc.png)
+
+### Set DNS record
+
+```bash
+sudo vim /etc/hosts
+```
+
+append this record:
+
+```
+127.0.0.1 tailchat.internal.com
+```
+
+Now you can open browser and view `http://tailchat.internal.com` to open tailchat in k8s.