any answer about the fence and its use

["Yazan Al-Sheyyab" <yazan@xxxxxxxxxx>]

Hello,

 

   Here is the case and what done till now :

 

   i have installed RHEL_ES_V3_update 4   on the two nodes and the shared can be seen from the two nodes through /dev/cciss/c0d0  i had configured each node and done with the packages needed by oracle, then
i had made two partitions on the shared each with 100M  for using as Raw1 and Raw2 for the cluster suite quorum then i had add them on the  /etc/sysconfig/rawdevices file  then  i run service rawdevices restart command and everything run ok, then i had installed RedHat cluster suite update 4  on the two nodes and configured the raws needed there .   THEN and after that i had mailed the list about the need of using the cluster suite to have a cluster running oracle RAC 10g   Then  the list has answered my question that i dont need the cluster suite.
 
  So , i have continued and installed the RedHat Global File System (GFS 6 ) update 4 on the two nodes and i have used the documentation in configuring it .

 

  i have made another two partition on the shared for use for Oracle , and i have build the configuration files for GFS and after that and before starting Oracle installation  i tried to test shutting down one of the nodes after mounting the two gfs partitions on the shared , then an error message appeared about the Lock_gulm server the it is still running   and  it still apears for a long time without shutting down even i power them down from the power botton on the server .

 

  i dont understand the lock_gulm or the files of ccs sonfiguration files cause i maybe bulid an error in any of them (i think the fence file cause i didnot understand it ) .

 

  i will give you the files that i have build till now , and im using two proliant ML250 servers and a shared of raid 5 disks remaing a 208.5 G of its space  ...... here is the files :

 

      the pool00.cfg  for the first partition on the shared (for using oracle) :

 

                 poolname pool00
                 minor 0 subpools 1
                 subpool 0 128 1 gfs_data
                 pooldevice 0 0 /dev/cciss/c0d0p5

 

      the pool01.cfg for the second partition on the shared (for using oracle) :

 

                  poolname pool01
                  minor 1 subpools 1
                  subpool 0 128 1 gfs_data
                  pooldevice 0 0 /dev/cciss/c0d0p6

 

     then i had done with the pool_tool command for them and everything is ok.

 

       then i had create a directory for the ccs files on the home of the root :

 

          /root/clu

 

  and i have put in the /root/clu  the following ccs files :

 

             cluster.ccs   :

 

                cluster {
         name = "oracluster"
         lock_gulm {
             servers = ["orat1", "orat2"]
             heartbeat_rate = 0.3
             allowed_misses = 1
         }
    }

 

    
          fence.ccs  :

 

           fence_devices {
         admin {
               agent = "fence_manual"
         }
     }

 

------------------------------------------------------------
             
          nodes.ccs :

 

                nodes {
   orat1 {
      ip_interfaces {
         eth1 = "10.0.0.2"
      }
      fence {
         human {
            admin {
               ipaddr = "10.0.0.2"
            }
         }
      }
   }

 

   orat2 {
      ip_interfaces {
         eth1 = "10.0.0.3"
      }
      fence {
         human {
            admin {
               ipaddr = "10.0.0.2"
            }
         }
      }
   }

 

}

 

--------------------------------------------------------------------------
        here is the files  ... i had done with them .   but i dont under stand the fence file use and is it true for my case  i had choosed to be a manual fence , but do i need another hardware to use for it or what ???????

 

 

 

       Sorry for the long  E-mail  but  just to let the reader have info about my case  correctlly.

 

        any answer for my case please    . ????????????????/

 

      any answer about the fence and it is not recommended to be manual , do i have to have another hardware in my case ???   power switch ___ what do it mean by power switch ....... ??

 

  any answer for my questions ??

 

 

Regards
-------------------------------------------------

 

Yazan

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