我创建了一个YAML文件,其中包含一个Pod中的三个图像(它们需要通过127.0.0.1相互通信)。看起来一切都正常。我在yaml文件中定义了一个nodeport。
有一个部署被定义为applications
,它包含三个镜像:
- contacts-db(一个MySQL数据库)
- front-end(一个Angular网站)
- net-core(一个API)
我定义了三个服务,每个容器一个。在里面,我定义了类型NodePort
以访问它。
因此,我检索了服务以获取端口号:
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
contacts-db 10.103.67.74 <nodes> 3306:30241/TCP 1d
front-end 10.107.226.176 <nodes> 80:32195/TCP 1d
net-core 10.108.146.87 <nodes> 5000:30245/TCP 1d
我在浏览器中输入http://:32195后一直在加载,但无法连接。以下是完整的Yaml文件:
---
apiVersion: v1
kind: Namespace
metadata:
name: three-tier
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: applications
labels:
name: applications
namespace: three-tier
spec:
replicas: 1
template:
metadata:
labels:
name: applications
spec:
containers:
- name: contacts-db
image: mysql/mysql-server #TBD
env:
- name: MYSQL_ROOT_PASSWORD
value: quintor
- name: MYSQL_DATABASE
value: quintor #TBD
ports:
- name: mysql
containerPort: 3306
- name: front-end
image: xanvier/angularfrontend #TBD
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 80
- name: net-core
image: xanvier/contactsapi #TBD
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
name: contacts-db
labels:
name: contacts-db
namespace: three-tier
spec:
type: NodePort
ports:
# the port that this service should serve on
- port: 3306
targetPort: 3306
selector:
name: contacts-db
---
apiVersion: v1
kind: Service
metadata:
name: front-end
labels:
name: front-end
namespace: three-tier
spec:
type: NodePort
ports:
- port: 80
targetPort: 80 #nodePort: 30001
selector:
name: front-end
---
apiVersion: v1
kind: Service
metadata:
name: net-core
labels:
name: net-core
namespace: three-tier
spec:
type: NodePort
ports:
- port: 5000
targetPort: 5000 #nodePort: 30001
selector:
name: net-core
---
kubectl get endpoints
命令查看哪些服务实际上由端点(Pod)支持。 - Janos Lenart