DB2中，在安装的过程中为数据库创建user和指定id的地方有两处，一个是在操作系统初始化的时候，或者说db2安装之前，用系统的useradd，还有一个是在response file中指定id
原本想的是：如果os指定了，response file中又指定id的话或许会冲突
所以我在ansible的playbook中创建了user以及指定了id（实际上就是安装之前使用了useradd）
结果反而报错：
DBI1702E The specified service name or port number conflicts with existing values in the TCP/IP services file. Explanation: The service name or port number conflicts with existing values in the services file. The service name might already be used with a different port number, or the port number might already be used with a different service name. User response: Specify a service name and port number that does not conflict with existing entries in the services file. A major error occurred while installing "DB2 Server Edition " on this computer. The installation cannot continue. If the problem persists contact your technical service representative. For more information see the DB2 installation log at "/tmp/db2setup.log"."
然后才知道原来就是要先有系统id之后，才能在响应文件中指定使用那个id