K8S-应用部署
1 应用管理解读
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2 应用部署实践
资源对象管理关系
资源对象管理实践
手工方式: kubectl run pod名称 --image=image地址
资源清单方式: apiVersion: v1 kind: Pod metadata: labels: run: my-pod name: my-pod spec: containers: - image: kubernetes-register.sswang.com/sswang/nginx name: my-pod
deployment资源实践
nginx-proxy应用的配置清单文件 apiVersion: apps/v1 kind: Deployment metadata: name: sswang-nginx-proxy labels: app: nginx spec: replicas: 1 selector: matchLabels: app: nginx template: metadata: labels: app: nginx spec: containers: - name: nginx image: kubernetes-register.sswang.com/sswang/nginx ports: - containerPort: 80
nginx-web 的资源清单文件 apiVersion: apps/v1 kind: Deployment metadata: name: sswang-nginx-web labels: app: nginx-web spec: replicas: 1 selector: matchLabels: app: nginx-web template: metadata: labels: app: nginx-web spec: containers: - name: nginx image: kubernetes-register.sswang.com/sswang/nginx_web:v0.1 ports: - containerPort: 80
tomcat-web 的资源清单文件 apiVersion: apps/v1 kind: Deployment metadata: name: sswang-tomcat-web labels: app: tomcat-web spec: replicas: 1 selector: matchLabels: app: tomcat-web template: metadata: labels: app: tomcat-web spec: containers: - name: tomcat image: kubernetes-register.sswang.com/sswang/tomcat_web:v0.1 ports: - containerPort: 8080
3 应用管理实践
资源对象隔离
namespace资源对象实践 apiVersion: v1 kind: Namespace metadata: name: my-ns --- apiVersion: apps/v1 kind: Deployment metadata: name: sswang-tomcat-web namespace: my-ns labels: app: tomcat-web spec: replicas: 1 selector: matchLabels: app: tomcat-web template: metadata: labels: app: tomcat-web spec: containers: - name: tomcat image: kubernetes-register.sswang.com/sswang/tomcat_web:v0.1 ports: - containerPort: 8080
资源对象的扩缩容
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资源对象扩缩容 kubectl scale deployment 资源对象名称 --replicas=目标数量 deployment/mysql 修改应用镜像版本 kubectl set image deployment 资源对象名称 容器名称=镜像名称
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