logging - 执行MLT(更像这样)查询时，Elasticsearch中缺少日志记录

Question

我在 ElasticSearch 中使用了更类似于查询的，问题是由于某种原因该查询未出现在日志文件中。我尝试了几种日志记录级别，例如DEBUG，INFO，但这并没有给我解决方案。

ElasticSearch Wiki也没有记录此类查询。

logging.yml

# you can override this using by setting a system property, for example -Des.logger.level=DEBUG
es.logger.level: DEBUG
rootLogger: ${es.logger.level}, console, file
logger:
 # log action execution errors for easier debugging
 action: DEBUG
 # reduce the logging for aws, too much is logged under the default INFO
 com.amazonaws: WARN

 # gateway
 #gateway: DEBUG
 #index.gateway: DEBUG

 # peer shard recovery
 #indices.recovery: DEBUG

 # discovery
 #discovery: TRACE

 index.search.slowlog: TRACE, index_search_slow_log_file
 index.indexing.slowlog: TRACE, index_indexing_slow_log_file

additivity:
 index.search.slowlog: false
 index.indexing.slowlog: false

appender:
 console:
 type: console
 layout:
 type: consolePattern
 conversionPattern: "[%d{ISO8601}][%-5p][%-25c{2}] %m%n"

 file:
 type: dailyRollingFile
 file: ${path.logs}/${cluster.name}.log
 datePattern: "'.'yyyy-MM-dd"
 layout:
 type: pattern
 conversionPattern: "[%d{ISO8601}][%-5p][%-25c{2}] %m%n"

 index_search_slow_log_file:
 type: dailyRollingFile
 file: ${path.logs}/${cluster.name}_index_search_slowlog.log
 datePattern: "'.'yyyy-MM-dd"
 layout:
 type: pattern
 conversionPattern: "[%d{ISO8601}][%-5p][%-25c{2}] %m%n"

 index_indexing_slow_log_file:
 type: dailyRollingFile
 file: ${path.logs}/${cluster.name}_index_indexing_slowlog.log
 datePattern: "'.'yyyy-MM-dd"
 layout:
 type: pattern
 conversionPattern: "[%d{ISO8601}][%-5p][%-25c{2}] %m%n"

Answer 1

如果要查看ES服务器接收的more_like_this查询，可以通过确保将其下沉到slow log file来实现。为此，您只需要像这样调整elasticsearch.yml配置文件(最后)。取消注释以下行，并将值更改为非常低的值，例如1ms:

index.search.slowlog.threshold.query.trace: 1ms

重新启动ES服务器后，其效果是ES服务器收到的每个查询都将记录在慢日志文件中，包括 more_like_this查询。