co-located group of containers and their storage is called a pod. For example, it makes sense to have database processes and data containers as close as possible - ideally they should be in same pod. Label role, group, or any similar mechanism given to a container or resource. One container can have a database role, while the other can be a load-balancer. Similarly, all pods could be labeled by geography that belong to a certain service, or find all containers that have a specific tier label value as database. Labels and selectors are inherently two sides of the same coin. You can use labels to classify

multi- tenant environment — The Ondat data platform is used by SunnyVision as the basis for its database as a service (DBaaS) “Secrets management has always been one of the most difficult issues in Kubernetes Application 1 Application 2 Customer B Cluster 1 Application 1 Customer A Copyright © SUSE 2021 K8s Database as a Service Rancher Management Server (RMS) Cluster All-in-one nodes Node Node Node Node Worker All-in-one nodes Node* Node* Node* Node* Node* Node* Node* Copyright © SUSE 2021 K8s Database as a Service Rancher Management Server (RMS) Cluster All-in-one nodes Node Node Node Node

routes. If a Contrail controller goes down, the Contrail controllers on the other nodes retain all database information and continue to provide the network control plane uninterrupted. On the worker nodes data in the main Kubernetes etcd database by default. When running on OpenShift, the Contrail controller stores all CN2 cluster data in its own Contrail etcd database. 9 The kube-apiserver is the entry

hashicorp.com/role: "internal-app" vault.hashicorp.com/agent-inject-secret-database-config.txt: "internal/data/database/config" https://learn.hashicorp.com/tutorials/vault/kubernetes-sidecar Vault

Page 17 端口映射 设置容器访问方式： 该步骤用于设置应用对外部暴露的访问方式，对于 HTTP 这类 L7 的应用建议使用 Ingress 方式，对于需要直接暴露端口的应用如 Database 等这类 L4 的应用，建议使用 HostPort 模 式。填写容器端口并选择传输协议，如果需要固定对应的宿主机端口，则手动配置主机监听 端口。 网络模式： a) Nodeport：