11、Kubernetes 微服务配置全解析

Kubernetes 微服务配置全解析

1. Kubernetes ConfigMaps 基础

ConfigMaps 是 Kubernetes 资源，按命名空间进行管理，任何 Pod 或容器都可以引用。以 link-manager 服务的 ConfigMap 为例：

apiVersion: v1
kind: ConfigMap
metadata:
  name: link-service-config
  namespace: default
data:
  MAX_LINKS_PER_USER: "10"
  PORT: "8080"

link-manager 部署资源通过 envFrom 键将其导入到 Pod 中：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: link-manager
  labels:
    svc: link
    app: manager
spec:
  replicas: 1
  selector:
    matchLabels:
      svc: link
      app: manager
  template:
    metadata:
      labels:
        svc: link
        app: manager
    spec:
      containers:
      - name: link-manager
        image: g1g1