实验集群下,可用的node数量只有4个,而两个deployment——test-host、test-host1对外暴露额端口是相同的——8080。两个deployment一共要启动的副本数量为5,这时,最后启动的那个Pod就会一直处于Pending状态。 宿主机端口占用: 当Host模式的Deployment(或RC)声明一个端口时,比如8080,若宿主机上有非Kubernetes控制的程序占...
hostNetwork:truednsPolicy:"ClusterFirstWithHostNet" 【示例】hostNetwork.yaml apiVersion:apps/v1kind:Deploymentmetadata:name:nginxspec:replicas:1selector:matchLabels:app:nginxtemplate:metadata:labels:app:nginxspec:# 使用主机网络hostNetwork:true# 该设置是使POD使用k8s的dns,dns配置在/etc/resolv.conf文件中#...
/etc/resolv.conf { max_concurrent 1000 } cache 30 loop reload loadbalance } --- apiVersion: apps/v1 kind: Deployment metadata: name: coredns namespace: kube-system labels: k8s-app: kube-dns kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile kubernetes.io/name...
[root@k8s-master1 secret]# cat secret.yaml apiVersion: v1 kind: Secret metadata: name: mysql type: Opaque data: mysql-root-password: "Y2l0bXNAMTIz" ##指定密码 --- apiVersion: apps/v1 kind: Deployment metadata: name: mysql spec: selector: matchLabels: app: mysql template: metadata...
kind: Deployment apiVersion: apps/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard spec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: kubernetes-dashboard ...
kubectl expose deployment nginx --port=80 --type=NodePort kubectl get pod,svc 7. 部署Dashboard 注:在master节点上进行如下操作 7.1 创建Dashboard的yaml文件 curl -o ~/kubernetes-dashboard.yamlhttps://raw.githubusercontent.com/kubernetes/dashboard/v2.5.0/aio/deploy/recommended.yaml ...
kubectl delete deployment ngnix 删除svc kubectl delete svc nginx 然后按照前面的方法重新创建 尝试重启K8s kubeadm reset 维护 遇到svc无法访问 这里目前还没有深入学习原理,但我我们创建的svc被分配到了其他的node所有我们利用master和node01都访问不到,通过查看pods的详细找到其配置,看到hostIP ...
apps/v1kind: Deploymentmetadata:name: nginx-hostport2labels:k8s-app: nginx-hostport2spec:replicas:1selector:matchLabels:k8s-app: nginx-hostport2template:metadata:labels:k8s-app: nginx-hostport2spec:nodeName: spring-38containers:- name: nginximage: nginx:latestports:- containerPort:80hostPort:...
Deployment 等的一组 Pod 组需要统一访问入口和做负载均衡。 Kubernetes Service Kubernetes Service 对象创建会分配一个相对固定的 Service IP 地址; 通过labelSelector 选择到一组 Pod,将这个 Service IP 地址和端口负载均衡到这一组 Pod IP 和端口上;
第一个差异,是后端app所依赖的数据库主机名,不再是localhost,而是k8s云集群里postgres数据库的内部service名。这需要改动back-end/src/main/resources/application.properties文件,将里面的localhost,替换为${DB_HOST}。即通过在下面介绍的deployment配置文件设置的DB_HOST环境变量,来确定postgres数据库的service名。