定时挂载文件系统步骤

if grep -qs '/mnt' /proc/mounts; then
echo "It's mounted."
else
echo "It's not mounted."
fi

if mountpoint -q /mnt
then
echo "mounted"
else
echo "not mounted"
fi

在10.10.10.20上执行挂载：
mount -t nfs -o rw,timeo=2,soft 10.10.10.10:/files /s

rpm -qa|grep nfs
出现
mount.nfs: requested NFS version or transport protocol is not supported

解决：

/etc/init.d/nfsserver status

/etc/init.d/nfsserver restart

/etc/init.d/nfsserver status

mount -t nfs -o rw,timeo=2,soft 10.10.10.10:/pro /S

挂载nfs提示：mount.nfs: access denied by server while mounting

配置nfs服务端

vi /etc/exports
/pro 10.10.10.0/24 (rw,no_root_squash,no_all_squash,sync)

重启rpcbind和nfs服务

service rpcbind restart
service nfsserver restart

shdb2:~ # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 491G 19G 448G 4% /
udev 1.9G 192K 1.9G 1% /dev
tmpfs 4.0G 117M 3.9G 3% /dev/shm
/dev/asm/archvg-508 20G 831M 20G 5% /arch
/dev/asm/oggdg-236 20G 117M 20G 1% /ogg
10.10.10.10:/pro 491G 26G 440G 6% /S
shdb2:~ #

实现功能：
###########
每分钟检测一次文件系统是否挂载成功
如果当前已挂载：
不做处理，并写日志到/tmp/mountcheck.log
日志内容如：2021-04-13 16:35:03——mounted

如果当前未挂载：
自动执行重新挂载命令，并写日志到/tmp/mountcheck.log
日志内容如：2021-04-13 16:36:07——remounted
###########

脚本部署步骤：

1、创建脚本
mkdir /scripts
cd /scripts
vi mount.sh
编辑内容如下：

#!/bin/bash
rq=$(date "+%Y-%m-%d %H:%M:%S")
if mountpoint -q /S
then
echo "--------------------------------" >> /tmp/mountcheck.log
echo "$rq——mounted">> /tmp/mountcheck.log
echo " " >> /tmp/mountcheck.log
else
mount -t nfs -o sync 150.103.75.130:/pro /S
echo "--------------------------------" >> /tmp/mountcheck.log
echo "$rq——remounted">> /tmp/mountcheck.log
echo " " >> /tmp/mountcheck.log
fi

保存，退出

2、授予脚本执行权限
chmod +x mount.sh

3、设置定时任务

每分钟检查一次
crontab -e
* * * * * /scripts/mount.sh > /dev/null 2&>1
保存退出