示例如何将配置信息传入Pod

在K8s中经常需要将一些公用配置信息传入各个Pod。
配置信息可以写在.toml文件中，通过其内容作为secret挂载在Pod的volume下进行访问
直接上示例
common.toml文件内容如下

[Mysql]UserName = "developer"Password = "123456"IpHost = "192.168.112.11:8902"DbName = "contract"[etcd]addrs = ["121.11.199.160:2379","121.11.199.161:2379","121.11.199.162:2379"]

执行命令将common.toml内容加载到k8s集群

kubectl create secret -n mytest generic common-config --from-file=./common.toml -o yaml --dry-run | kubectl apply -n mytest -f -

testconfig.yaml内容如下

apiVersion: v1kind: Podmetadata:  name: configtest-podspec:  containers:    - name: configtest-container      image: busybox      command: ["sh", "-c"]      args:      - while true; do          if [[ -e /etc/config/common.toml ]]; then            echo -en '\n\n'; cat /etc/config/common.toml;          fi;          sleep 5;        done;      volumeMounts:        - name: config-volume          mountPath: /etc/config  volumes:    - name: config-volume      secret:        secretName: common-config        items:          - key: common.toml            path: common.toml

生成Pod

kubectl apply -f testconfig.yaml -n mytest

查看Pod

kubectl get pods -n mytestNAME             READY   STATUS    RESTARTS   AGEconfigtest-pod   1/1     Running   0          66s

进入Pod

kubectl -it exec configtest-pod -n mytest /bin/sh# ls /etc/config/common.toml# cat /etc/config/common.toml[Mysql]UserName = "developer"Password = "123456"IpHost = "192.168.112.11:8902"DbName = "contract"[etcd]addrs = ["121.11.199.160:2379","121.11.199.161:2379","121.11.199.162:2379"]

common.toml文件已经挂载在/etc/config下