Convert rethinkdb example to v1beta3
This commit is contained in:
Dawn Chen
parent
90e1a0d6d8
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87fd2b85c3
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@ -1,10 +1,12 @@
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{
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"apiVersion": "v1beta3",
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"kind": "ResourceQuota",
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"name": "quota",
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"metadata": {
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"name": "quota",
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},
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"spec": {
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"hard": {
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"memory": "1073741824",
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"memory": "1Gi",
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"cpu": "20",
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"pods": "10",
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"services": "5",
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@ -0,0 +1,106 @@
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RethinkDB Cluster on Kubernetes
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==============================
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Setting up a [rethinkdb](http://rethinkdb.com/) cluster on [kubernetes](http://kubernetes.io)
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**Features**
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* Auto configuration cluster by querying info from k8s
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* Simple
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Quick start
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-----------
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**Step 1**
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antmanler/rethinkdb will discover peer using endpoints provided by kubernetes_ro service,
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so first create a service so the following pod can query its endpoint
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```shell
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kubectl create -f driver-service.yaml
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```
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check out:
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```shell
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$kubectl get se
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NAME LABELS SELECTOR IP PORT
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rethinkdb-driver db=influxdb db=rethinkdb 10.241.105.47 28015
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```
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**Step 2**
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start fist server in cluster
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```shell
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kubectl create -f rc.yaml
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```
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Actually, you can start servers as many as you want at one time, just modify the `replicas` in `rc.ymal`
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check out again:
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```shell
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$kubectl get po
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POD IP CONTAINER(S) IMAGE(S) HOST LABELS STATUS
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99f6d361-abd6-11e4-a1ea-001c426dbc28 10.240.2.68 rethinkdb rethinkdb:1.16.0 10.245.2.2/ db=rethinkdb,role=replicas Running
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```
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**Done!**
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---
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Scale
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-----
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You can scale up you cluster using `kubectl resize`, and new pod will join to exsits cluster automatically, for example
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```shell
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$kubectl resize rc rethinkdb-rc-1.16.0 --replicas=3
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resized
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$kubectl get po
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POD IP CONTAINER(S) IMAGE(S) HOST LABELS STATUS
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99f6d361-abd6-11e4-a1ea-001c426dbc28 10.240.2.68 rethinkdb rethinkdb:1.16.0 10.245.2.2/ db=rethinkdb,role=replicas Running
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d10182b5-abd6-11e4-a1ea-001c426dbc28 10.240.26.14 rethinkdb rethinkdb:1.16.0 10.245.2.4/ db=rethinkdb,role=replicas Running
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d101c1a4-abd6-11e4-a1ea-001c426dbc28 10.240.11.14 rethinkdb rethinkdb:1.16.0 10.245.2.3/ db=rethinkdb,role=replicas Running
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```
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Admin
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-----
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You need a separate pod (which labled as role:admin) to access Web Admin UI
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```shell
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kubectl create -f admin-pod.yaml
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kubectl create -f admin-service.yaml
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```
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find the service
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```shell
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$kubectl get se
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NAME LABELS SELECTOR IP PORT
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rethinkdb-admin db=influxdb db=rethinkdb,role=admin 10.241.220.209 8080
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rethinkdb-driver db=influxdb db=rethinkdb 10.241.105.47 28015
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```
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open a web browser and access to *http://10.241.220.209:8080* to manage you cluster
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**Why not just using pods in replicas?**
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This is because kube-proxy will act as a load balancer and send your traffic to different server,
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since the ui is not stateless when playing with Web Admin UI will cause `Connection not open on server` error.
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- - -
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**BTW**
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* All services and pods are placed under namespace `rethinkdb`.
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* `gen_pod.sh` is using to generate pod templates for my local cluster,
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the generated pods which is using `nodeSelector` to force k8s to schedule containers to my designate nodes, for I need to access persistent data on my host dirs.
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* see [antmanler/rethinkdb-k8s](https://github.com/antmanler/rethinkdb-k8s) for detail
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@ -0,0 +1,25 @@
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apiVersion: v1beta3
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kind: Pod
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metadata:
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labels:
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db: rethinkdb
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role: admin
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name: rethinkdb-admin-1.16.0
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namespace: rethinkdb
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spec:
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containers:
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- image: antmanler/rethinkdb:1.16.0
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name: rethinkdb
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ports:
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- containerPort: 8080
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name: admin-port
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- containerPort: 28015
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name: driver-port
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- containerPort: 29015
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name: cluster-port
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volumeMounts:
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- mountPath: /data/rethinkdb_data
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name: rethinkdb-storage
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volumes:
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- name: rethinkdb-storage
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emptyDir: {}
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@ -0,0 +1,13 @@
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apiVersion: v1beta3
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kind: Service
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metadata:
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labels:
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db: influxdb
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name: rethinkdb-admin
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namespace: rethinkdb
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spec:
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containerPort: 8080
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port: 8080
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selector:
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db: rethinkdb
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role: admin
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@ -0,0 +1,12 @@
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apiVersion: v1beta3
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kind: Service
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metadata:
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labels:
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db: influxdb
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name: rethinkdb-driver
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namespace: rethinkdb
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spec:
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containerPort: 28015
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port: 28015
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selector:
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db: rethinkdb
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@ -0,0 +1,34 @@
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apiVersion: v1beta3
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kind: ReplicationController
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metadata:
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labels:
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db: rethinkdb
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name: rethinkdb-rc-1.16.0
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namespace: rethinkdb
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spec:
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replicas: 1
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selector:
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db: rethinkdb
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role: replicas
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template:
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metadata:
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labels:
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db: rethinkdb
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role: replicas
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spec:
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containers:
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- image: antmanler/rethinkdb:1.16.0
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name: rethinkdb
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ports:
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- containerPort: 8080
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name: admin-port
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- containerPort: 28015
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name: driver-port
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- containerPort: 29015
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name: cluster-port
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volumeMounts:
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- mountPath: /data/rethinkdb_data
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name: rethinkdb-storage
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volumes:
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- name: rethinkdb-storage
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emptyDir: {}
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