BACKUP_HOST and BACKUP_USER configuration issue in k8s

[xyfleet]

描述
Hello team,
I installed the goInception using the chart [https://github.com/douban/charts/tree/master/charts/goinception] in my k8s cluster. (I installed the Archery and goinception together.)

In the Mysql DB instance, I have several databases, like archery and billing. The database billing is the one that needs archery to check.

The part of config for goInception is:

initEnv:
    - name: BACKUP_HOST
      value: "mysql_instance_endpoint"
    - name: BACKUP_PORT
      value: "3306"
    - name: BACKUP_USER
      value: "root"
    - name: BACKUP_PASSWORD
      value: "xxxxxx"

I found two new databases got created once I ran/committed a sql task successfully on Archery.

inception 
ql_1_xxxx_rds_yyyyy_amazonaws_com_3306_billing

Are all of the settings correct? Do we really need to use root in the section of initEnv? Is there any other account we can use here?

In the MySQL DB, I did not see a user called "inception_bak" or "inception". Is this OK?

Thanks.

重现
Install the chart in k8s, you can reproduce the issue.

环境

• 数据库: [mysql]
• 版本: [5.7]
• goInception chart: 0.3.1

参数