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1、把vmware装在一台机子上,用另一台机子(如自己的便携机)来操作,这样比较流畅,不会出一些机器性能、虚拟机方面带来的问题。
2、共享存储用iscsi来装,这样更合理、更易于理解。
3、用上述办法cluvfy检查,正式安装一个报错都没有。
4、以后使用中若虚拟的几台机子弄死了,检查步骤很清晰:
4.1、在node1上#fdisk -l
看不到之sdb1、sdb2、sdb3则把node1、node2、storage的iscsi重启.
[root@storage init.d]# ./iscsi-target restart
Stopping iSCSI target service: [ OK ]
Starting iSCSI target service: [ OK ]
[root@storage init.d]# hostname
storage
[root@storage init.d]#
[root@node1 init.d]# ./iscsi restart
Stopping iSCSI daemon:
iscsid dead but pid file exists
Turning off network shutdown. Starting iSCSI daemon: [ OK ]
[ OK ]
Setting up iSCSI targets: Logging in to [iface: default, target: iqn.2001-04.com.example:storage.disk2.sys1.xyz, portal: 192.168.195.13,3260]
Login to [iface: default, target: iqn.2001-04.com.example:storage.disk2.sys1.xyz, portal: 192.168.195.13,3260]: successful
[ OK ]
4.2、共享存储刚挂上,得改权限
[root@node1 dev]# chown root install ./sdb1
[root@node1 dev]# chown oracle:dba ./sdb2
[root@node1 dev]# chown oracle:dba ./sdb3
4。3、再启动ocr,和检查状态
[root@node1 bin]# ./crsctl start crs
Attempting to start Oracle Clusterware stack
The CRS stack will be started shortly
[root@node1 bin]# ./crsctl check crs
Cluster Synchronization Services appears healthy
Cluster Ready Services appears healthy
Event Manager appears healthy
[root@node1 bin]# ./crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora....w1.inst application ONLINE OFFLINE
ora....w2.inst application ONLINE OFFLINE
ora.cjw.db application ONLINE OFFLINE
ora....SM1.asm application ONLINE ONLINE node1
ora....E1.lsnr application ONLINE ONLINE node1
ora.node1.gsd application ONLINE ONLINE node1
ora.node1.ons application ONLINE ONLINE node1
ora.node1.vip application ONLINE ONLINE node1
ora....SM2.asm application ONLINE ONLINE node2
ora....E2.lsnr application ONLINE ONLINE node2
ora.node2.gsd application ONLINE ONLINE node2
ora.node2.ons application ONLINE ONLINE node2
ora.node2.vip application ONLINE ONLINE node2
再就可以摆弄了。
5、小结:
用多台机配置和操作避免了虚拟机的性能影响问题,iscsi连共享存储原理上更好理解,也就便于排错,想进一步研究ocr、votedisk的冗余问题,database files的asm多个磁盘配置,都可以再加。
6、文档
“Oracle RAC 常用维护工具和命令”这篇简洁得好,
它的来源又是联机文档里的“Oracle Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide”
足以慢慢玩了。
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