如何在kubernetes中连接tomcat和mysql数据库容器

kubectl create deployment tomcat --image=tomcat

kubectl expose deployment tomcat --port=8080

kubectl create secret generic mysql-secret --from-literal=username=<username> --from-literal=password=<password> --from-literal=database=<database>

kubectl create deployment mysql --image=mysql --env="MYSQL_USER=$(kubectl get secret mysql-secret -o jsonpath='{.data.username}' | base64 --decode)" --env="MYSQL_PASSWORD=$(kubectl get secret mysql-secret -o jsonpath='{.data.password}' | base64 --decode)" --env="MYSQL_DATABASE=$(kubectl get secret mysql-secret -o jsonpath='{.data.database}' | base64 --decode)"

kubectl expose deployment mysql --port=3306

<Resource name="jdbc/mysql" auth="Container" type="javax.sql.DataSource"
           maxTotal="100" maxIdle="30" maxWaitMillis="10000"
           username="mysql-username" password="mysql-password"
           driverClassName="com.mysql.jdbc.Driver"
           url="jdbc:mysql://mysql-service:3306/mysql-database"/>

kubectl rollout restart deployment tomcat