RAC各节点硬件配置可以不一样

最新推荐文章于 2024-06-26 23:53:45 发布

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本文详细对比了两个不同配置节点的硬件性能（CPU、内存、硬盘、SWAP）以及集群管理（节点数量、实例运行状态）。通过分析发现，即使硬件配置存在差异，操作系统相同的情况下仍能实现节点的添加。总结了硬件配置对于集群性能的影响，并提供了集群节点管理的方法。

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1 节点1和节点2配置是一样，如下

(1)cpu方面

[root@qnsdb1 ~]# more /proc/cpuinfo |grep 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
model name      : Intel(R) Xeon(R) CPU           E5420 @ 2.50GHz
[root@qnsdb1 ~]#

[root@qnsdb1 ~]# more /proc/cpuinfo |grep "physical id"
physical id     : 0
physical id     : 1
physical id     : 0
physical id     : 0
physical id     : 0
physical id     : 1
physical id     : 1
physical id     : 1

(2)内存方面

[root@qnsdb1 ~]# more /proc/meminfo
MemTotal:     32962540 kB
MemFree:       1020544 kB
Buffers:        331000 kB
Cached:       28052404 kB
SwapCached:         16 kB
Active:       21011960 kB
Inactive:      9627096 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32962540 kB
LowFree:       1020544 kB
SwapTotal:    18481144 kB
SwapFree:     18481128 kB
Dirty:             576 kB
Writeback:           0 kB
AnonPages:     2255052 kB
Mapped:        9384040 kB
Slab:           594644 kB
PageTables:     537832 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit: 34962412 kB
Committed_AS: 20328884 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    352076 kB
VmallocChunk: 34359386243 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

（3）硬盘方面

[root@qnsdb1 ~]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      115G   33G   77G 30% /
/dev/sda1              99M   14M   81M 15% /boot
tmpfs                  16G 276M   16G   2% /dev/shm

(4)swap方面

[root@qnsdb1 ~]# more /proc/swaps
Filename Type Size Used Priority
/dev/mapper/VolGroup00-LogVol01 partition 18481144 16 -1

2 节点3和节点4配置是一样，如下

(1)cpu方面

[root@qnsdb3 ~]# more /proc/cpuinfo |grep "2.40GHz"
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E5530 @ 2.40GHz

（2）内存方面

[root@qnsdb3 ~]# more /proc/meminfo
MemTotal:     32933340 kB
MemFree:       2071028 kB
Buffers:         91544 kB
Cached:       27297860 kB
SwapCached:          0 kB
Active:        6216996 kB
Inactive:     22845076 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32933340 kB
LowFree:       2071028 kB
SwapTotal:    34996216 kB
SwapFree:     34996216 kB
Dirty:            1780 kB
Writeback:           0 kB
AnonPages:     1672640 kB
Mapped:        4400168 kB
Slab:          1013796 kB
PageTables:     618972 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit: 51462884 kB
Committed_AS: 10862600 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    361836 kB
VmallocChunk: 34359375439 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

（3）硬盘方面

[root@qnsdb3 ~]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      238G   52G 174G 23% /
/dev/sda1              99M   14M   81M 15% /boot
tmpfs                  16G 276M   16G   2% /dev/shm

（4）swap方面

[root@qnsdb3 ~]# more /proc/swaps
Filename Type Size Used Priority
/dev/mapper/VolGroup00-LogVol01 partition 34996216 0 -1

3 查看集群的节点个数

[grid@qnsdb1 ~]$ olsnodes -s -t
qnsdb1 Active Unpinned
qnsdb2 Active Unpinned
qnsdb3 Active Unpinned
qnsdb4 Active Unpinned

[grid@qnsdb1 ~]$ srvctl status database -d qns

Instance qns1 is running on node qnsdb1
Instance qns2 is running on node qnsdb2
Instance qns3 is running on node qnsdb3
Instance qns4 is running on node qnsdb4

总结：

配置不一样的硬件，只要操作系统一样，一样也是可以添加节点的。