db2 purescale集群环境的启停命令与步骤是什么？

db2start报如下错误，如何解决？

[db2inst1@node01 ~]$ db2start
ADM12026W The DB2 server has detected that a valid license for the product "DB2 Enterprise Server Edition" has not been registered.
08/31/2018 00:56:30 129 0 SQL1677N DB2START or DB2STOP processing failed due to a DB2 cluster services error.
08/31/2018 00:56:32 0 0 SQL1685N An error was encountered during DB2START processing of DB2 member with identifier "0" because the database manager failed to start one or more CFs.
08/31/2018 00:56:32 1 0 SQL1685N An error was encountered during DB2START processing of DB2 member with identifier "1" because the database manager failed to start one or more CFs.
SQL1032N No start database manager command was issued. SQLSTATE=57019

个人认为： 实例启停命令是db2start/db2stop，如果有问题的话，可以用db2instance –list来检查状态，然后做相应处理。