创建主索引：
/usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf news –rotate
创建增量索引：
/usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf news_delta –rotate
合并主索引和增量索引：
/usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf –merge news news_delta –rotate –merge-dst-range deleted 0 0
–rotate参数可以在不停searchd的情况下索引，不然的话会有类似如下的提示：
FATAL: failed to lock /usr/local/coreseek/var/data/hx_news_delta.spl: Resource temporarily unavailable, will not index. Try –rotate option.
ERROR: index ‘delta’ is already locked; lock: failed to lock /usr/local/coreseek/var/data/cncn_article_delta.spl: Resource temporarily unavailable