NFS永久挂载 服务端 nfs rpcbind 开机自启动

[root@nfs01 ~]# systemctl is-active rpcbind nfs active active [root@nfs01 ~]# systemctl is-enabled rpcbind nfs enabled enabled

方法1 /etc/rc.local chmod +x /etc/rc.d/rc.local

方法2 /etc/fstab 通过/etc/fstab 实现nfs开机自动挂载

172.16.1.31:/nfs /nfs nfs defaults 0 0

通过/etc/fstab 实现nfs开机自动挂载 CentOS6 失败 启动 netfs 服务

[root@web01 ~]# mount 172.16.1.31:/nfs /nfs mount.nfs: /nfs is busy or already mounted [root@web01 ~]# mount 172.16.1.31:/nfs /nfs mount.nfs: /nfs is busy or already mounted [root@web01 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 99G 1.7G 98G 2% / devtmpfs 476M 0 476M 0% /dev tmpfs 487M 0 487M 0% /dev/shm tmpfs 487M 14M 473M 3% /run tmpfs 487M 0 487M 0% /sys/fs/cgroup /dev/sda1 197M 105M 93M 54% /boot tmpfs 98M 0 98M 0% /run/user/0 172.16.1.31:/nfs 99G 1.7G 98G 2% /nfs [root@web01 ~]# grep /nfs /proc/mounts 172.16.1.31:/nfs /nfs nfs4 rw,relatime,vers=4.1,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=172.16.1.7,local_lock=none,addr=172.16.1.31 0 0

Stale file handle

文件句柄错误 df -h 没有挂载这个 nfs grep /nfs /proc/mounts 已经挂载

解决： 强制卸载 /nfs

[root@web01 ~]# cp /bin/ls /nfs cp: failed to access ‘/nfs’: Stale file handle [root@web01 ~]# cp /bin/ls /nfs/ cp: failed to access ‘/nfs/’: Stale file handle [root@web01 ~]# cd /nfs/ -bash: cd: /nfs/: Stale file handle [root@web01 ~]# mkdir -p /nfs/ mkdir: cannot create directory ‘/nfs/’: File exists [root@web01 ~]# rm -r /nfs/ rm: cannot remove ‘/nfs/’: Stale file handle

an incorrect mount option was specified

不正确的 挂载参数 指定了1个错误的挂载参数 [root@web01 ~]# mount -t nfs -o nosiud,nodev,noexec 172.16.1.31:/data /mnt mount.nfs: an incorrect mount option was specified mount -o rsize=131072,wsize=131072,nosuid,noexec,nodev 172.16.1.31:/nfs /nfs

read-only file system

文件系统只读 touch: cannot touch ‘/root/alex.txt’: Read-only file system

mount -o rw,remount /

进入光盘救援模式

troubeshooting ---->rescue

continue 自动把磁盘的上面的根分区挂载到 /mnt/sysimage

shell 手动进行挂载

fdisk -l

mount /dev/sda3 /mnt/sysimage

chroot /mnt/sysimage #把当前系统的根目录设置为 从

/mnt/sysimage

vim /etc/fstab #修改磁盘上面的文件

重启

云服务器发邮件 25 smtp 465 smtps（加密）