- kube-tomcat.yaml實現如下。
這裏是把Deployment和Services在一個文件中實現了。也可以分爲兩個文件來實現。
# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Configuration to deploy release version of the Dashboard UI.
#
# Example usage: kubectl create -f <this_file>
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
labels:
app: kube-tomcat
version: v1.1.1
name: kube-tomcat
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: kube-tomcat
template:
metadata:
labels:
app: kube-tomcat
spec:
containers:
- name: kube-tomcat
image: docker.io/chenyufeng/tomcat-centos
imagePullPolicy: Always
ports:
- containerPort: 8080
protocol: TCP
args:
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
- --apiserver-host=http://47.97.90.38:8080 ## 請修改爲自己的kube-apiserver
livenessProbe:
httpGet:
path: /
port: 8080
initialDelaySeconds: 30
timeoutSeconds: 30
---
kind: Service
apiVersion: v1
metadata:
labels:
app: kube-tomcat
name: kube-tomcat
namespace: default
spec:
type: NodePort
ports:
- port: 80
targetPort: 8080
selector:
app: kube-tomcat
完整的文件如下：
- 在master上，然後使用如下命令創建deployment和Service
kubectl create -f kube-tomcat.yaml
查看創建的deployment:
kubectl get deployment
查看這個deployment的詳情：
kubectl describe deployment kube-tomcat
查看創建的service：
kubectl get service
查看這個service的詳情。
kubectl describe service kube-tomcat
service詳情這裏的IP就是CLUSTER-IP. CLUSTER-IP是和service綁定的。
service詳情這裏的Port就是Service的端口號。
service詳情這裏的NodePort就是Node的真實端口號。
service詳情這裏的Endpoints就是容器的IP和port。
查看創建的pod：
kubectl get pod
查看其中一個pod的詳情。
pod詳情這裏的IP是nodes中的虛擬IP。該虛擬IP可以去nodes裏面使用ifconfig查看。
kubectl describe pod kube-tomcat-1115055280-tk1f8
在nodes上查看創建的容器：
這裏一定要指定namespaces和services。
- 然後到nodes中，把war使用“docker cp”複製到容器的tomcat/webapps，就可以實現頁面的訪問了【這裏可能需要等待較多時間，至少幾分鐘】
- 在Postman中進行測試
注意在請求中的IP應該是master所在的IP。返回成功。可以使用Postman來進行接口測試，測試通過表示部署成功。
- 以上步驟的部署也可以結合持續集成CI/CD來進行，能簡化不少流程。
