我正在使用Centos（CentOS Linux版本7.3.1611），并尝试使用Cassandra（3.0.9）。安装非常容易遵循，到目前为止效果很好。但是，当我（使用systemctl start cassandra）启动Cassandra时，服务是：“ active (exited)”而不是“ active (running)”。
[root@localhost ~]# systemctl status cassandra
? cassandra.service - SYSV: Starts and stops Cassandra
Loaded: loaded (/etc/rc.d/init.d/cassandra; bad; vendor preset: disabled)
Active: active (exited) since Wed 2017-05-03 12:06:54 CEST; 5s ago
Docs: man:systemd-sysv-generator(8)
Process: 9337 ExecStart=/etc/rc.d/init.d/cassandra start (code=exited, status=0/SUCCESS)
May 03 12:06:54 localhost.localdomain systemd[1]: Starting SYSV: Starts and stops Cassandra...
May 03 12:06:54 localhost.localdomain su[9344]: (to cassandra) root on none
May 03 12:06:54 localhost.localdomain cassandra[9337]: Starting Cassandra: OK
May …