关于rac的dns

chaicsd14

oracle:11.2.0.3
OS:redhat 5.4

环境描述:
准备测试两节点的rac，配置dns用来解析scan ip
dns服务器是192.168.56.101(也就是rac01)


问题描述:
DNS已经能够正确解析，但是用
./runcluvfy.sh stage -pre crsinst -n rac01,rac02 -verbose
检查的时候一直报错

Checking the file "/etc/resolv.conf" to make sure only one of domain and search entries is defined
File "/etc/resolv.conf" does not have both domain and search entries defined
Checking if domain entry in file "/etc/resolv.conf" is consistent across the nodes...
domain entry in file "/etc/resolv.conf" is consistent across nodes
Checking if search entry in file "/etc/resolv.conf" is consistent across the nodes...
search entry in file "/etc/resolv.conf" is consistent across nodes
Checking DNS response time for an unreachable node
  Node Name                             Status                  
  ------------------------------------  ------------------------
  rac02                                 failed                  
  rac01                                 passed                  
PRVF-5636 : The DNS response time for an unreachable node exceeded "15000" ms on following nodes: rac02

File "/etc/resolv.conf" is not consistent across nodes



我的两个节点的/etc/resolv.conf都是一样的

1. [oracle@rac01 database]$ cat /etc/resolv.conf
   
2. nameserver 192.168.56.101

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dns解析也是成功的:

1. [root@rac01 grid]# nslookup
   
2. > scanip.localdomain
   
3. Server:         192.168.56.101
   
4. Address:        192.168.56.101#53
   
5. 
   
6. Name:   scanip.localdomain
   
7. Address: 192.168.56.122
   
8. Name:   scanip.localdomain
   
9. Address: 192.168.56.120
   
10. Name:   scanip.localdomain
    
11. Address: 192.168.56.121

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请各位老师帮忙看下，这个是什么问题

hzcyhujw

记得有一个nslookup 判断时间的参数 这个应该是在解析时超过oracle的默认解析时间了  可以使用心跳作为dns的通道  不过对安装不会有影响

chaicsd14

hzcyhujw 发表于 2014-1-26 15:00
记得有一个nslookup 判断时间的参数 这个应该是在解析时超过oracle的默认解析时间了  可以使用心跳作为dns ...

对以后的scanip的使用会有影响吗？

chaicsd14

判断时间的参数,应该是这个

1. [root@rac02 ~]#  time nslookup scanip.localdomain
   
2. Server:         192.168.56.101
   
3. Address:        192.168.56.101#53
   
4. 
   
5. Name:   scanip.localdomain
   
6. Address: 192.168.56.122
   
7. Name:   scanip.localdomain
   
8. Address: 192.168.56.120
   
9. Name:   scanip.localdomain
   
10. Address: 192.168.56.121
    
11. 
    
12. 
    
13. real    0m0.025s
    
14. user    0m0.007s
    
15. sys     0m0.009s

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1. [root@rac01 ~]#  time nslookup scanip.localdomain
   
2. Server:         192.168.56.101
   
3. Address:        192.168.56.101#53
   
4. 
   
5. Name:   scanip.localdomain
   
6. Address: 192.168.56.121
   
7. Name:   scanip.localdomain
   
8. Address: 192.168.56.122
   
9. Name:   scanip.localdomain
   
10. Address: 192.168.56.120
    
11. 
    
12. 
    
13. real    0m0.021s
    
14. user    0m0.007s
    
15. sys     0m0.010s

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时间好像没有多大的差别啊

Liu Maclean(刘相兵

分别在2个节点上
time nslookup  rac02  

chaicsd14

Liu Maclean(刘相兵 发表于 2014-1-26 21:21
分别在2个节点上
time nslookup  rac02

1. [root@rac02 tmp]# time nslookup  rac02
   
2. Server:         192.168.56.101
   
3. Address:        192.168.56.101#53
   
4. 
   
5. Name:   rac02.localdomain
   
6. Address: 192.168.56.102
   
7. 
   
8. 
   
9. real    0m0.022s
   
10. user    0m0.008s
    
11. sys     0m0.008s
    
12. 
    
13. 
    
14. [root@rac01 ~]# time nslookup  rac02
    
15. Server:         192.168.56.101
    
16. Address:        192.168.56.101#53
    
17. 
    
18. Name:   rac02.localdomain
    
19. Address: 192.168.56.102
    
20. 
    
21. 
    
22. real    0m0.027s
    
23. user    0m0.011s
    
24. sys     0m0.006s

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Liu Maclean(刘相兵

忽略 该 cluvfy的警告，直接安装是否有报错？

chaicsd14

直接安装的时候不报错了

hzcyhujw

貌似两节点的使用/etc/hosts来解析就可以的  不一定一定要dns吧