标签:默认 win klist ctime f11 ffffff restart 环境 create
对于没有共享存储的环境下,可以使用基于NFS的ASM来配置RAC。这里简单描述如何在Oracle 18c RAC环境下配置基于NFS的ASM服务。所用到的主机信息如图中所示:
[root@onas ~]# vi /etc/exports
/u02 *(rw,sync,no_wdelay,insecure_locks,no_root_squash)
[root@onas ~]# systemctl restart nfs
[root@onas ~]# showmount -e
Export list for onas:
/u02 *
RAC节点分别编辑/etc/fstab文件,加入以下内容:
[root@odb01 ~]# vi /etc/fstab
onas:/u02 /u02 nfs rw,bg,hard,nointr,tcp,vers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0 0 0
[root@odb01 ~]# mount -a
[root@odb02 ~]# vi /etc/fstab
onas:/u02 /u02 nfs rw,bg,hard,nointr,tcp,vers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0 0 0
[root@odb02 ~]# mount -a
具体的安装过程不做过多描述,只截取几张ASM部分的截图。
这里使用第二个选项“Configure ASM on NFS”,使用了此选项后,系统会自动创建共享磁盘。
指定OCR的位置,下一步。待Grid组件安装并配置完成后,默认会创建一块30G大小的磁盘ocrvfdgdisk0,用于OCRVFDG磁盘组,如下:
[root@odb01 ~]# la /u02/asmrac/
total 33G
drwxr-xr-x 2 grid oinstall 40 Sep 4 17:05 .
drwxr-xr-x 8 root root 4.0K Sep 4 15:09 ..
-rw-rw---- 1 grid asmadmin 28G Sep 5 09:52 ocrvfdgdisk0
通过asmca图形界面查看,如下图所示:
在共享目录下,创建了10块虚拟磁盘:asmdisk1~asmdisk10,分别演示使用asmca和命令行创建磁盘组。通过asmca图形界面创建data磁盘组,通过asmca命令创建fra磁盘组。
[grid@odb01 ~]$ asmca -silent -sysAsmPassword abcABC12 -asmsnmpPassword abcABC12 -createDiskGroup -diskString ‘/u02/asmrac‘ -diskGroupName fra -diskList /u02/asmrac/asmdisk6 -redundancy external -au_size 4
[INFO] [DBT-30001] Disk groups created successfully. Check /u01/app/grid/cfgtoollogs/asmca/asmca-180905AM105833.log for details.
//添加磁盘
[grid@odb01 ~]$ asmca -silent -sysAsmPassword abcABC12 -asmsnmpPassword abcABC12 -addDisk -diskString ‘/u02/asmrac‘ -diskGroupName fra -diskList /u02/asmrac/asmdisk7,/u02/asmrac/asmdisk8,/u02/asmrac/asmdisk9
[grid@odb01 ~]$ asmcmd lsdsk -t -G fra
Create_Date Mount_Date Repair_Timer Path
05-SEP-18 05-SEP-18 0 /u02/asmrac/asmdisk6
05-SEP-18 05-SEP-18 0 /u02/asmrac/asmdisk7
05-SEP-18 05-SEP-18 0 /u02/asmrac/asmdisk8
05-SEP-18 05-SEP-18 0 /u02/asmrac/asmdisk9
[root@onas asmdisks]# for i in {1..10};do dd if=/dev/zero of=/u02/asmrac/asmdisk$i bs=1024k count=10000;done
[root@odb01 ~]# ll /u02/asmrac/
total 102400000
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk1
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk2
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk3
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk4
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk5
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk6
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk7
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk8
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk9
-rw-r--r-- 1 root root 10485760000 Sep 4 11:41 asmdisk10
在RAC各个节点分别配置asmlib服务,如下:
root@odb01 ~]# oracleasm configure -i
Configuring the Oracle ASM library driver.
This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets (‘[]‘). Hitting <ENTER> without typing an
answer will keep that current value. Ctrl-C will abort.
Default user to own the driver interface []: grid
Default group to own the driver interface []: dba
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]:
Writing Oracle ASM library driver configuration: done
[root@odb01 ~]# oracleasm init
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": oracleasm
Configuring "oracleasm" to use device physical block size
Mounting ASMlib driver filesystem: /dev/oracleasm
如果使用asmlib,必须使用losetup命令创建块设备,如下:
[root@odb01 ~]# for i in {1..10};do losetup /dev/loop$i /u02/asmdisks/asmdisk$i;done
[root@odb01 ~]# ll /dev/loop*
brw-rw---- 1 root disk 7, 1 Sep 4 14:35 /dev/loop1
brw-rw---- 1 root disk 7, 10 Sep 4 14:35 /dev/loop10
brw-rw---- 1 root disk 7, 2 Sep 4 14:35 /dev/loop2
brw-rw---- 1 root disk 7, 3 Sep 4 14:35 /dev/loop3
brw-rw---- 1 root disk 7, 4 Sep 4 14:35 /dev/loop4
brw-rw---- 1 root disk 7, 5 Sep 4 14:35 /dev/loop5
brw-rw---- 1 root disk 7, 6 Sep 4 14:35 /dev/loop6
brw-rw---- 1 root disk 7, 7 Sep 4 14:35 /dev/loop7
brw-rw---- 1 root disk 7, 8 Sep 4 14:35 /dev/loop8
brw-rw---- 1 root disk 7, 9 Sep 4 14:35 /dev/loop9
crw-rw---- 1 root disk 10, 237 Sep 4 14:35 /dev/loop-control
[root@odb02 ~]# for i in {1..10};do losetup /dev/loop$i /u02/asmdisks/asmdisk$i;done
[root@odb02 ~]# ll /dev/loop*
[root@odb01 ~]# for i in {1..10};do oracleasm createdisk vol$i /dev/loop$i;done
[root@odb02 ~]# oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
Instantiating disk "VOL1"
Instantiating disk "VOL2"
Instantiating disk "VOL3"
Instantiating disk "VOL4"
Instantiating disk "VOL5"
Instantiating disk "VOL6"
Instantiating disk "VOL7"
Instantiating disk "VOL8"
Instantiating disk "VOL9"
Instantiating disk "VOL10"
在安装Grid组件时,在配置“Storage Option”中选择第一个选项“Configure ASM using block devices”,如下图:
Configuring Oracle 18c RAC Using NFS With ASM
标签:默认 win klist ctime f11 ffffff restart 环境 create
原文地址:http://blog.51cto.com/candon123/2170567