一、configmap配置映射

• 存放配置文件内容

1、创建configMap， 存MySQL配置

apiVersion: v1
kind: ConfigMap
metadata:name: test-mysql-config
data:test_my.cnf: |[mysqld]server_id=10log_bin=master

[root@k8s-master statefulTest]# kubectl create -f mysql-configmap.yaml
configmap/test-mysql-config created
[root@k8s-master statefulTest]# 
[root@k8s-master statefulTest]# kubectl get cm
NAME                DATA   AGE
kube-root-ca.crt    1      126d
test-mysql-config   1      11s
[root@k8s-master statefulTest]# 
[root@k8s-master statefulTest]# kubectl describe cm test-mysql-config
Name:         test-mysql-config
Namespace:    default
Labels:       <none>
Annotations:  <none>Data
====
test_my.cnf:
----
[mysqld]
server_id=10
log_bin=masterBinaryData
====Events:  <none>
[root@k8s-master statefulTest]# 

2、创建MySQL pod

apiVersion: apps/v1
kind: StatefulSet
metadata:name: test-mysql
spec:replicas: 1selector:matchLabels:app: mysqlserviceName: "test-mysql"template:metadata:labels:app: mysqlspec:containers:- name: test-mysqlimage: mysql:5.7imagePullPolicy: IfNotPresentenv:- name: MYSQL_ROOT_PASSWORDvalue: redhatvolumeMounts:- name: mysql-data-volumemountPath: /var/lib/mysql- name: mysql-config-volumemountPath: "/etc/mysql/conf.d/"readOnly: truevolumes:- name: mysql-data-volumepersistentVolumeClaim:claimName: db-pvc-5g- name: mysql-config-volume					// 创建数据卷，存放MySQL配置文件configMap:name: test-mysql-config
---
apiVersion: v1
kind: Service
metadata:name: test-mysql
spec:ports:- port: 3306selector:app: mysql