定时清理k8s-docker的日志，清理磁盘空间

[root@tidb-21 delete-k8s-logs]# ls
ansib-delete.sh  delete-logs.sh

[root@tidb-21 delete-k8s-logs]# more delete-logs.sh   #删除日志脚本
#!/bin/bash
for i in `find /var/docker/lib/containers -name *-json.log`;do cat /dev/null > $i;done

[root@tidb-21 delete-k8s-logs]# more ansib-delete.sh  #使用ansible下发脚本，并执行脚本
#!/bin/bash
ansible k8s -m copy -a "src=/wj/delete-k8s-logs/delete-logs.sh dest=/tmp/"
ansible k8s -m shell -a ‘chmod u+x /tmp/delete-logs.sh && sh /tmp/delete-logs.sh‘
echo $(date +"%Y-%m-%d:%T") >> /tmp/delete-k8s-log.txt

[root@tidb-21 delete-k8s-logs]# crontab -l           #配置定时任务，每周一执行脚本
41 8 * * 1 /wj/delete-k8s-logs/ansib-delete.sh