一. 创建Redis的deployment和service
1. 创建Redis deployment
redis-master-deployment.yaml
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2 kind: Deployment metadata: name: redis-master labels: app: redis spec: selector: matchLabels: app: redis role: master tier: backend replicas: 1 template: metadata: labels: app: redis role: master tier: backend spec: containers: - name: master image: k8s.gcr.io/redis:e2e # or just image: redis resources: requests: cpu: 100m memory: 100Mi ports: - containerPort: 6379
执行:
kubectl create -f redis-master-deployment.yaml
查看执行结果:
deployment "redis-master" created
当 pod 是 ready 时,将得到: kubectl get pods NAME READY STATUS RESTARTS AGE redis-master-765d459796-258hz 1/1 Running 0 50s kubectl get deployment NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE redis-master 1 1 1 1 55s kubectl get rs NAME DESIRED CURRENT READY AGE redis-master-765d459796 1 1 1 1m
2. 创建redis service
redis-master-service.yaml
apiVersion: v1 kind: Service metadata: name: redis-master labels: app: redis role: master tier: backend spec: ports: - port: 6379 targetPort: 6379 selector: app: redis role: master tier: backend
执行:
kubectl create -f redis-master-service.yaml
查看结果:
service "redis-master" created
3. 验证 Redis 服务是否运行在 pod 中并且监听 6379 端口:
kubectl get pods redis-master-765d459796-258hz –template=‘{{(index (index .spec.containers 0).ports 0).containerPort}}{{”\n”}}’
输出:
6379
二、转发一个本地端口到Pod端口
1. 从 Kubernetes v1.10 开始,kubectl port-forward
允许使用资源名称(例如服务名称)来选择匹配的 pod 来进行端口转发。
kubectl port-forward redis-master-765d459796-258hz 6379:6379
相当于:
kubectl port-forward pods/redis-master-765d459796-258hz 6379:6379
或
kubectl port-forward deployment/redis-master 6379:6379
或
kubectl port-forward rs/redis-master 6379:6379
或
kubectl port-forward svc/redis-master 6379:6379
以上的命令都有效,输出类似于:
I0710 14:43:38.274550 3655 portforward.go:225] Forwarding from 127.0.0.1:6379 -> 6379 I0710 14:43:38.274797 3655 portforward.go:225] Forwarding from [::1]:6379 -> 6379
2. 启动 Redis 命令行接口:
redis-cli
在 Redis 命令行提示符下,输入 ping
命令:
127.0.0.1:6379>ping
提示ping成功
与本地 6379 端口建立的连接将转发到运行 Redis 服务器的 pod 的 6379 端口。通过此连接,可以使用本地工作站来调试在 pod 中运行的数据库。
原文地址:https://www.cnblogs.com/UniqueColor/p/11897868.html
时间: 2024-10-10 09:33:21