CenterOS 7 kubernetes安装及集成mysql、
1.安装并启动kubernetes
（1）关闭防火墙
systemctl disable firewalld
systemctl stop firewalld
（2）安装etcd及Kubernetes
yum install -y etcd kubernetes
（3）修改/etc/kubernetes/apiserver
去除 KUBE_ADMISSION_CONTROL中的SecurityContextDeny,ServiceAccount，并重启kube-apiserver.service服务：
systemctl restart kube-apiserver.service
（4）按顺序启动所有服务
systemctl start ectd
systemctl start docker
systemctl start kube-apiserver
systemctl start kube-controller-manager
systemctl start kube-scheduler
systemctl start kubelet
systemctl start kube-proxy
2.启动mysql
（1）任意目录下创建mysql-rc.yaml
apiVersion: v1
kind: ReplicationController
metadata:
name: mysql
spec:
replicas: 1
selector:
app: mysql
template:
metadata:
labels:
app: mysql
spec:
containers:
- name: mysql
image: mysql
ports:
- containerPort: 3306
env:
- name: MYSQL_ROOT_PASSWORD
value: "123456"
（2）发布至kubernetes集群中
kubectl create -f mysql-rc.yaml
（3）创建mysql服务文件mysql-svc.yaml
apiVersion: v1
kind: Service
metadata:
name: mysql
spec:
type: NodePort
ports:
- port: 3306
nodePort: 30306
selector:
app: mysql
安装好后可通过服务器地址:mysql-svc.yaml中nodePort访问mysql数据库
3.启动redis
（1）创建redis-rc.yaml
apiVersion: v1
kind: ReplicationController
metadata:
name: redis
spec:
replicas: 1
selector:
app: redis
template:
metadata:
labels:
app: redis
spec:
containers:
- name: redis
image: redis
ports:
- containerPort: 6379
（2）发布至kubernetes集群中
kubectl create -f redis-rc.yaml
（3）创建redis服务文件redis-svc.yaml
apiVersion: v1
kind: Service
metadata:
name: redis
spec:
type: NodePort
selector:
app: redis
ports:
- name: "1"
port: 6379
protocol: TCP
targetPort: 6379
nodePort: 31009
安装好后可通过服务器地址:mysql-svc.yaml中nodePort访问mysql数据库
