K8S常用配置

亲和性

https://tachingchen.com/tw/blog/kubernetes-assigning-pod-to-nodes/

kubectl get nodes --show-labels
kubectl label nodes worker-s001 dubhe/role=middleware

deploy.yaml:

spec:
  template:
    spec:
      affinity:
        nodeAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
            - weight: 1
              preference:
                matchExpressions:
                  - key: dubhe/role
                    operator: In
                    values:
                      - middleware

coredns自定义解析

# 编辑configmap
kubectl -n kube-system edit configmap coredns

# 添加自定义解析
        hosts /etc/coredns/NodeHosts {
          10.193.36.252 harbor.dubhe
          10.193.36.33  gogs.dubhe
          ttl 60
          reload 15s
          fallthrough
        }

# 重启coredns的deployment