配置日志的聚集

注意：开启日志聚集功能，需要重新启动nademanager，resourcemanager，historymanager

1. 配置yarn-site.xml

<!--日志聚集功能开启-->
<property>
    <name>yarn.log-aggregation-enable</name>
    <value>true</value>
<property>

<!--日志保留时间设置7天-->
<property>
    <name>yarn.log-aggregation.retain-seconds</name>
    <value>604800</value>
<property>

2.关闭nademanager，resourcemanager，historymanager

yarn-daemon.sh stop resourcemanager
yarn-daemon.sh stop nodemanager
yarn-daemon.sh stop historyserver

3.启动nademanager，resourcemanager，historymanager

yarn-daemon.sh start resourcemanager
yarn-daemon.sh start nodemanager
yarn-daemon.sh start historyserver

4.查看日志

http://linux4:19888/jobhistory