我有一个远程.sh
脚本来备份mySQL文件。 Cron正在运行.sh文件未执行。 Crontab的内容是:
#SHELL=/bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin
* * * * * /home/ubuntu/dscript/db_backup.sh > /tmp/db.output
文件内容为:
#!/bin/bash
DATE=$(date +%Y%m%d_%H%M)
zipname="db_prod_$DATE.sql"
mysqldump db_prod > $zipname
aws s3 mv $zipname s3://mybackups/$zipname
rm -rf $zipname
zipname="db_staging_$DATE.sql"
mysqldump db_staging > $zipname
aws s3 mv $zipname s3://mybackups/$zipname
rm -rf $zipname
Bash路径
bash: /bin/bash /etc/bash.bashrc /usr/share/man/man1/bash.1.gz
我在Ubuntu上。
文件处于+x
模式。
答案 0 :(得分:1)
#!/usr/bin/bash
DATE=$(date +%Y%m%d_%H%M)
zipname="db_prod_$DATE.sql"
SCRIPT_LOG_FILE="/tmp/backup.log"
echo "[${DATE}] [INFO] Starting personnal backup" > ${SCRIPT_LOG_FILE}
$(which mysqldump) db_prod > $zipname
if [ "$?" -eq "0" ] && [ -f ${zipname} ];then
echo "[$(date +%Y%m%d_%H%M)] [INFO] Mysqldump save file ${zipname}" > ${SCRIPT_LOG_FILE}
# file is created continue job with this file ...
$(which aws) s3 mv $zipname s3://mybackups/$zipname
rm -rf $zipname
else
echo "[$(date +%Y%m%d_%H%M)] [ERROR] Mysqldump can't save file ${zipname}" > ${SCRIPT_LOG_FILE}
fi
exit 0
crontab -l </ strong>必须是:
* * * * * /home/ubuntu/dscript/db_backup.sh &> /tmp/error.and.result.db.output
答案 1 :(得分:0)
检查cron错误: 尝试查看错误:
~$ sudo cat /var/log/syslog|grep CRON|grep db_backup.sh
~$ sudo cat /var/log/syslog|grep CRON|grep MY_USERNAME
(许可被拒绝或其他)
其中MY_USERNAME是用户执行: crontab -e
检查脚本错误:
* * * * * /home/ubuntu/dscript/db_backup.sh > /tmp/result.db.output
* * * * * /home/ubuntu/dscript/db_backup.sh 2> /tmp/error.db.output
或只是
* * * * * /home/ubuntu/dscript/db_backup.sh &> /tmp/error.and.result.db.output
问题是错误是来自执行cron还是在脚本中,上述方法将帮助您找到问题的根源。