Shulou(Shulou.com)06/01 Report--

Create a directory on the NFS server to store shared files and provide NFS disk space

[root@PROD2] # mkdir-p / u01/nfs_shares

[root@PROD2 ~] # ll / U01

Total dosage 8

Drwxr-xr-x 4 oracle oinstall 4096 November 30 16:18 app

Drwxr-xr-x 2 root root 4096 December 4 18:25 nfs_shares

Use this directory for NFS shares

[root@PROD2 ~] # vi / etc/exports

[root@PROD2 ~] # cat / etc/exports

/ u01/nfs_shares * (rw,sync,no_wdelay,insecure_locks,no_root_squash)

Start the NFS service (configuration information requires NFS restart to take effect)

[root@PROD2 ~] # service nfs status

Rpc.svcgssd is stopped

Rpc.mountd is stopped

Nfsd is stopped

Rpc.rquotad is stopped

[root@PROD2 ~] # service nfs start

Starting NFS services: [OK]

Starting NFS quotas: [OK]

Starting NFS mountd: [OK]

Starting NFS daemon: [OK]

Starting RPC idmapd: [OK]

On the machine that uses the NFS service, create a directory as the mount point and mount the shared directory

[root@PROD1] # mkdir-p / u01/oradata

[root@PROD1] # mount-t nfs-o rw PROD2:/u01/nfs_shares / u01/oradata/

[root@PROD1 ~] # mount

/ dev/sda3 on / type ext4 (rw)

Proc on / proc type proc (rw)

Sysfs on / sys type sysfs (rw)

Devpts on / dev/pts type devpts (rw,gid=5,mode=620)

Tmpfs on / dev/shm type tmpfs (rw)

/ dev/sda1 on / boot type ext4 (rw)

None on / proc/sys/fs/binfmt_misc type binfmt_misc (rw)

Sunrpc on / var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

PROD2:/u01/nfs_shares on / u01/oradata type nfs (rw,vers=4,addr=192.168.56.62,clientaddr=192.168.56.61)

Other users can use this directory, but they need to be given the appropriate permissions

[root@PROD1 ~] # su-oracle

[oracle@PROD1 ~] $cd / u01/oradata/

[oracle@PROD1 oradata] $ll

Total 0

[oracle@PROD1 oradata] $touch

Touch: cannot touch `': Permission denied

[oracle@PROD1 oradata] $logout

[root@PROD1 ~] # chown oracle:oinstall / u01/oradata

[root@PROD1 ~] # su-oracle

[oracle@PROD1 ~] $cd / u01/oradata/

[oracle@PROD1 oradata] $touch

[oracle@PROD1 oradata] $ll

Total 0

-rw-r--r-- 1 oracle oinstall 0 Dec 4 18:43

After uninstalling the NFS shared directory, you will find that the newly created file is missing

[oracle@PROD1 oradata] $logout

[root@PROD1 ~] # umount / u01/oradata/

[root@PROD1 ~] # mount

/ dev/sda3 on / type ext4 (rw)

Proc on / proc type proc (rw)

Sysfs on / sys type sysfs (rw)

Devpts on / dev/pts type devpts (rw,gid=5,mode=620)

Tmpfs on / dev/shm type tmpfs (rw)

/ dev/sda1 on / boot type ext4 (rw)

None on / proc/sys/fs/binfmt_misc type binfmt_misc (rw)

Sunrpc on / var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

[root@PROD1 ~] # ll / u01/oradata/

Total dosage 0

Check on the NFS server, and the file appears here.

[root@PROD2 ~] # ll / u01/nfs_shares/

Total dosage 0

-rw-r--r-- 1 oracle oinstall 0 December 4 18:43

At the same time, a magical thing happened, and the owner of the directory changed.

[root@PROD2 ~] # ll / U01

Total dosage 8

Drwxr-xr-x 4 oracle oinstall 4096 November 30 16:18 app

Drwxr-xr-x 2 oracle oinstall 4096 December 4 18:43 nfs_shares

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