虚拟机模拟部署Extended Clusters(一)基础环境准备

snowofsummer 2019-09-17

配置 node scope 磁盘

操作系统版本:

Red Hat Enterprise Linux Server release 6.8 (Santiago)

网络配置:

eth0 ,eth1 用户rac的通信网络和心跳网络。 eth2 用于磁盘网络iscsi。

2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:1e:dd:db brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.230/24 brd 192.168.0.255 scope global eth0
    inet 192.168.0.232/24 brd 192.168.0.255 scope global secondary eth0:1
    inet6 fe80::20c:29ff:fe1e:dddb/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:1e:dd:e5 brd ff:ff:ff:ff:ff:ff
    inet 17.17.0.1/24 brd 17.17.0.255 scope global eth1
    inet 169.254.237.99/16 brd 169.254.255.255 scope global eth1:1
    inet6 fe80::20c:29ff:fe1e:dde5/64 scope link 
       valid_lft forever preferred_lft forever
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:1e:dd:ef brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.200/24 brd 10.0.0.255 scope global eth2
    inet6 fe80::20c:29ff:fe1e:ddef/64 scope link 
       valid_lft forever preferred_lft forever

磁盘配置

prod01:
Device "/dev/mapper/rootvg-lvol0" is marked an ASM disk with the label "VOTEDB01"
Device "/dev/sdb1" is marked an ASM disk with the label "NODE01DATA01"

<target iqn.2016-08.disk.rh6:disk200m>
        backing-store /dev/sdb1
        backing-store /dev/sdb2
    backing-store /dev/mapper/rootvg-lvol0
</target>

prod02:

Device "/dev/mapper/rootvg-lvol0" is marked an ASM disk with the label "VOTEDB02"
Device "/dev/sdc1" is marked an ASM disk with the label "NODE02DATA01"

[root@prod02 ~]# cat /etc/tgt/targets.conf 
<target iqn.2016-08.disk.rh6:disk200m>
        backing-store /dev/sdc1
        backing-store /dev/mapper/rootvg-lvol0
</target>

prod01 本地拥有磁盘VOTEDB01,NODE01DATA01

prod02 本地拥有磁盘VOTEDB02,NODE02DATA01

prod01,prod02 通过iscsi,通过eth2网络把本地磁盘映射到对方。

磁盘部署情况

DISK03 共享磁盘,2台prod01,prod02都可见,eth2网络中断不受影响。

[root@prod01 ~]# oracleasm  listdisks
DISK03
NODE01DATA01
NODE02DATA01
VOTEDB01
VOTEDB02

[root@prod02 ~]# oracleasm listdisks
DISK03
NODE01DATA01
NODE02DATA01
VOTEDB01
VOTEDB02

当eth2 down ,prod01 能读写(DISK03,NODE01DATA01,VOTEDB01),prod02能读写(DISK03,NODE02DATA01,VOTEDB02)

集群asm 配置情况:

/dev/oracleasm/disks/DISK03 仲裁磁盘(QUORUM disk)
crs(DISK03,VOTEDB02,VOTEDB01)

ocr(NODE01DATA01,NODE02DATA01)


DG_NAME     DG_STATE   TYPE       DSK_NO DSK_NAME    PATH                           MOUNT_S FAILGROUP        STATE
--------------- ---------- ------ ---------- ---------- -------------------------------------------------- ------- -------------------- --------
CRS        MOUNTED    NORMAL       2 CRS_0002    /dev/oracleasm/disks/DISK03               CACHED  ZCDISK        NORMAL
CRS        MOUNTED    NORMAL       5 CRS_0005    /dev/oracleasm/disks/VOTEDB02               CACHED  CRS_0001        NORMAL
CRS        MOUNTED    NORMAL       9 CRS_0009    /dev/oracleasm/disks/VOTEDB01               CACHED  CRS_0000        NORMAL
OCR        MOUNTED    NORMAL       0 OCR_0000    /dev/oracleasm/disks/NODE01DATA01           CACHED  OCR_0000        NORMAL
OCR        MOUNTED    NORMAL       1 OCR_0001    /dev/oracleasm/disks/NODE02DATA01           CACHED  OCR_0001        NORMAL


DISK_NUMBER NAME       PATH                          HEADER_STATUS         OS_MB   TOTAL_MB    FREE_MB REPAIR_TIMER V FAILGRO
----------- ---------- -------------------------------------------------- -------------------- ---------- ---------- ---------- ------------ - -------
      0 OCR_0000   /dev/oracleasm/disks/NODE01DATA01          MEMBER             5120    5120       3185        0 N REGULAR
      1 OCR_0001   /dev/oracleasm/disks/NODE02DATA01          MEMBER             5120    5120       3185        0 N REGULAR
      9 CRS_0009   /dev/oracleasm/disks/VOTEDB01              MEMBER             2048    2048       1584        0 Y REGULAR
      5 CRS_0005   /dev/oracleasm/disks/VOTEDB02              MEMBER             2048    2048       1648        0 Y REGULAR
      2 CRS_0002   /dev/oracleasm/disks/DISK03              MEMBER             5115    5115       5081        0 Y QUORUM


GROUP_NUMBER NAME    COMPATIBILITY                             DATABASE_COMPATIBILITY                      V
------------ ---------- ------------------------------------------------------------ ------------------------------------------------------------ -
       1 OCR    11.2.0.0.0                             11.2.0.0.0                           N
       2 CRS    11.2.0.0.0                             11.2.0.0.0                           Y

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