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技术问题两则

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Release: 2016-06-07 17:37:25
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安装oracle11g时,ORACLE_SID设置成db_254的形式,会导致sqlplus登录时不方便,因此最好设置成exportORACLE_SID=db254的形式,以免引起不必要的麻烦。一小兄弟来

安装oracle11g时,ORACLE_SID设置成db_254的形式,会导致sqlplus登录时不方便,因此最好设置成export ORACLE_SID=db254的形式,以免引起不必要的麻烦。


一小兄弟来电询问,说keepalived做mysql的failover时,,vip可以漂移,但mysql进程自动起不来。疑惑在于:脚本权限没问题,手动运行也是对的。我建议他把配置发过来,其内容为:


global_defs {

  router_id LVS_DEVEL

}


vrrp_script check_mysql {

               script   /tmp/check_mysql.sh

               interval 2

               weight  2

}


track_script {

       check_mysql

}


vrrp_instance VI_1 {

   state MASTER

   interface eth0

   virtual_router_id 51

   priority 100

   advert_int 1

   authentication {

       auth_type PASS

       auth_pass 1111

   }

   virtual_ipaddress {

       192.168.112.70

   }

}


哈哈,track_script跑到vrrp_instance外边去了,要把它关在里面才行哟!他说网上全是这样,真是以讹传讹,误导人呢!贴个正确的配置在后面,供大家参考:

global_defs {

  router_id LVS_DEVEL

}


vrrp_script check_mysql {

               script   /tmp/check_mysql.sh

               interval 2

               weight  2

}



vrrp_instance VI_1 {

   state MASTER

   interface eth0

   virtual_router_id 51

   priority 100

   advert_int 1

   authentication {

       auth_type PASS

       auth_pass 1111

   }

track_script {

       check_mysql

}


   virtual_ipaddress {

       192.168.112.70

   }

}



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