centos7中定时计划任务5分钟一次（crontab）

版权声明：本文为博主原创学习笔记，如需转载请注明来源： https://blog.csdn.net/wugenqiang/article/details/81355633

1.输入命令：

[root@master ~]# crontab -e

2.添加：

*/5 * * * * /usr/share/nginx/spark_run_nginx_log.sh 2>&1 >> /usr/share/nginx/crontab_spark_run_nginx.log

3.等待验证：

[root@master ~]# cd /usr/share/nginx/
[root@master nginx]# ls
crontab_spark_run_nginx.log  metastore_db  run_log.sh
derby.log                    modules       spark_run_nginx_log.sh
html                         nginx_log.py  test_log_records_add.sh
[root@master nginx]# cat crontab_spark_run_nginx.log 
2018年 08月 02日 星期四 11:25:01 CST job start...
 --- rm hdfs output_nginx --- 
 --- rm url information ---
Deleted /user/flume/nginx_log_output_need/url/20180802
 --- rm url information ok---
 --- rm ip404 information ---
Deleted /user/flume/nginx_log_output_need/ip404/20180802
 --- rm ip404 information ok---
 --- rm hdfs output_nginx Done --- 
 --- spark-submit --- 
 --- spark-submit Done --- 
 --- copy file from hdfs to local file : url.txt ---
 --- copy file from hdfs to local file : url.txt Done ---
 --- copy file from hdfs to local file : ip404.txt ---
 --- copy file from hdfs to local file : ip404.txt Done ---
 All Done !!!
 2018年 08月 02日 星期四 11:28:28 CST job end 

------- - - -  OK  - - - -----------