nxlog-ce-3.1.2319 

1. add custom conf to ` /etc/nxlog/nxlog.d`; 
2. systemctl restart nxlog;
3. systemctl status nxlog;
4. got message:
   
5.  how to enable the im_dbi module ?
6. the config looks like:

config file: `/etc/nxlog/nxlog.d/icslog.conf`:
<Input dbi>
    Module    im_dbi
    Driver    mysql
    Option    host 127.0.0.1
    Option    username root
    Option    password pp
    Option    dbname logs
    SQL       SELECT * FROM ics_alarm_log
</Input>
<Output file>
Module    om_file
File      '/tmp/ics_alarm_log.csv'
</Output>