rac的共享存储有很多种搭建方式，nfs是其中一种。生产环境一般不采用nfs，多用于测试。
nfs搭建步骤大致分为如下：
1.划盘
给节点1挂载一块磁盘，并将磁盘分区，并格式化，再挂载
[root@news01 softdb]# fdisk -l Disk /dev/vda: 53.6 GB, bytes heads, sectors/track, cylinders Units = cylinders of * = bytes Device Boot Start End Blocks Id System /dev/vda1 * Linux /dev/vda2 + Linux /dev/vda3 Linux swap / Solaris Disk /dev/vdb: 53.6 GB, bytes heads, sectors/track, cylinders Units = cylinders of * = bytes Device Boot Start End Blocks Id System /dev/vdb1 + Linux
我们把其中的/dev/vdb1 作为NFS磁，再将/dev/vdb1格式化
[root@news01 softdb]# mkfs.ext3 /dev/vdb1
mke2fs 1.39 (-May-)
Filesystem label=
OS type: Linux
Block size= (log=)
Fragment size= (log=)
inodes, blocks
blocks (5.00%) reserved for the super user
First data block=
Maximum filesystem blocks=
block groups
blocks per group, fragments per group
inodes per group
Superblock backups stored on blocks:
, , , , , , , , ,
Writing inode tables: done
Creating journal ( blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every mounts or
days, whichever comes first. Use tune2fs -c or -i to override.
2.配置服务端
格式化好之后，创建一个目录来挂载磁盘，并编辑exports文件，重启和nfs有关的服务
[root@news01 softdb]# mkdir -p /nfsdatafile [root@news01 softdb]# vi /etc/exports [root@news01 softdb]# mount /dev/vdb1 /nfsdatafile/ [root@news01 softdb]# service portmap restart Stopping portmap: [ OK ] Starting portmap: [ OK ] [root@news01 softdb]# service nfs restart Shutting down NFS mountd: [FAILED] Shutting down NFS daemon: [FAILED] Shutting down NFS quotas: [FAILED] Starting NFS services: [ OK ] Starting NFS quotas: [ OK ] Starting NFS daemon: [ OK ] Starting NFS mountd: [ OK ] [root@news01 softdb]# showmount -e Export list for news01: /nfsdatafile * [root@news01 softdb]#
3.客户端挂载
在需要挂载这个nfs的节点上面，编辑fstab文件，再进行mount。需要注意的一点是，oracle的rac对nfs的参数有做要求，具体可以参考：
Mount Options for Oracle files when used with NAS devices [ID 359515.1]
节点1：
[root@news01 softdb]# mkdir /nfs [root@news01 softdb]# vi /etc/fstab [root@news01 softdb]# cat /etc/fstab LABEL=/ / ext3 defaults LABEL=/boot /boot ext3 defaults tmpfs /dev/shm tmpfs defaults devpts /dev/pts devpts gid=,mode= sysfs /sys sysfs defaults proc /proc proc defaults LABEL=SWAP-vda3 swap swap defaults 192.168.0.188:/nfsdatafile /nfs nfs rw,bg,hard,rsize=,wsize=,tcp,vers=,timeo=,actimeo= [root@news01 softdb]# mount -a [root@news01 softdb]# mount /dev/vda2 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=,mode=) /dev/vda1 on /boot type ext3 (rw) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) /dev/vdb1 on /nfsdatafile type ext3 (rw) nfsd on /proc/fs/nfsd type nfsd (rw) 192.168.0.188:/nfsdatafile on /nfs type nfs (rw,bg,hard,rsize=,wsize=,tcp,nfsvers=,timeo=,actimeo=,addr=192.168.0.188) [root@news01 softdb]#
节点2：
[root@news02 softdb]# mkdir /nfs [root@news02 softdb]# vi /etc/fstab [root@news02 softdb]# mount -a [root@news02 softdb]# mount /dev/vda2 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=,mode=) /dev/vda1 on /boot type ext3 (rw) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) 192.168.0.188:/nfsdatafile on /nfs type nfs (rw,bg,hard,rsize=,wsize=,tcp,nfsvers=,timeo=,actimeo=,addr=192.168.0.188) [root@news02 softdb]#
4.测试
以上就把2个节点的nfs配置好了，测试的时候，可以在任意一个节点的nfs目录做rw操作，再在另外一个节点查看能否正常rw。
[root@news02 nfs]# vi abc.txt [root@news02 nfs]# cat abc.txt [root@news02 nfs]# ll total -rw-r--r-- root root Mar abc.txt drwx------ root root Mar : lost+found [root@news02 nfs]#
[root@news01 softdb]# cd /nfs [root@news01 nfs]# ll total -rw-r--r-- root root Mar : abc.txt drwx------ root root Mar : lost+found [root@news01 nfs]# more abc.txt [root@news01 nfs]#
以上就是在linux配置NFS用于RAC的搭建的详细内容，更多关于在linux配置NFS用于RAC的搭建的资料请关注九品源码其它相关文章！