本篇文章给大家分享的是有关Centos6.5 + Oracle 11g r2 + nfs如何搭建RAC环境，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。

环境要求：

1.2台系统为Centos6.5的机器，其中 1台做nfs（硬盘大小至少4T）

2. 每台机器至少2块网卡

3. 准备5个可用的IP地址（一个为scan,二台配置各配置public和private地址）

4. 内存至少2G以下内存，建议使用4G或者更高

地址规划：

第一台主机：rac1 网卡eth0IP地址：172.16.0.1/24 网卡eth2地址: 192.168.1.192/24

第一台主机：rac1 网卡eth0IP地址：172.16.0.2/24 网卡eth2: 192.168.1.193/24

虚拟IP地址：192.168.1.200

关闭ntp 并配置yum的本地源

关闭服务#/etc/init.d/ntpdstop#chkconfigntpdoff#mv/etc/ntp.conf/etc/ntp.conf.org#mkdir/mnt/cdrom/#mount/dev/cdrom/mnt/cdrom/#vim/etc/yum.repos.d/CentOS-Media.reponame=CentOS-$releasever-Mediabaseurl=file:///mnt/cdrom/gpgcheck=0enabled=1

安装依赖软件包

#yum-yinstallbinutils-2*.rpm\compat-libstdc++-33*.rpm\elfutils-libelf-0.*.rpm\elfutils-libelf-devel-*.rpm\gcc-4*.rpm\gcc-c++-4*.rpm\glibc-2.*.rpm\glibc-common-2*.rpm\glibc-devel-2*.rpm\libaio-0*.rpmlibgcc-4*.rpm\libstdc++-4*.rpm\libstdc++-devel*.rpm\make-3*.rpm\pdksh-*.rpm\sysstat-7*.rpm\libaio-devel-*.rpm\unixODBC-2*.rpm\unixODBC-devel-2*.rpm\

配置host文件

#vim/etc/hosts#Public172.16.0.1rac1-priv172.16.0.2rac2-priv#Virtual192.168.1.194rac1-vip192.168.1.195rac2-vip#Scan192.168.1.200rac-scan#NAS192.168.1.194nas1

修改内核参数

#vim/etc/sysctl.conf在最后面添加fs.aio-max-nr=1048576fs.file-max=6815744kernel.shmall=2097152kernel.shmmax=536870912kernel.shmmni=4096kernel.sem=25032000100128net.ipv4.ip_local_port_range=900065500net.core.rmem_default=262144net.core.rmem_max=4194304net.core.wmem_default=262144net.core.wmem_max=1048576#sysctl-p

修改文件描述符的限制

#vi/etc/security/limits.conforaclesoftnproc2047oraclehardnproc16384oraclesoftnofile1024oraclehardnofile65536gridsoftnproc2047gridhardnproc16384gridsoftnofile1024gridhardnofile65536

添加pam_limits.so 模块

vim/etc/pam.d/login在最后添加sessionrequiredpam_limits.so

添加profile环境配置文件

#vim/etc/profile在最后添加if[$USER="oracle"]||[$USER="grid"];thenif[$SHELL="/bin/ksh"];thenulimit-p16384ulimit-n65536elseulimit-u16384-n65536fiumask022fi

创建用户和组并创建相应的密码

#/usr/sbin/groupadd-g501oinstall#/usr/sbin/groupadd-g502dba#/usr/sbin/groupadd-g503oper#/usr/sbin/groupadd-g504asmadmin#/usr/sbin/groupadd-g505asmoper#/usr/sbin/groupadd-g506asmdba#/usr/sbin/useradd-goinstall-Gdba,asmdba,operoracle#/usr/sbin/useradd-goinstall-Gasmadmin,asmdba,asmoper,oper,dbagrid#passwdoracle#passwdgrid

创建目录并设置相应权限

#mkdir-p/u01/app/oracle#chown-Roracle:oinstall/u01/app/oracle#chmod-R775/u01/app/oracle#mkdir-p/u01/app/oracle/product/11.2.0/db_1#chown-Roracle:oinstall/u01/app/oracle/product/11.2.0/db_1#chmod-R775/u01/app/oracle/product/11.2.0/db_1#mkdir-p/u01/app/grid#chown-Rgrid.oinstall/u01/app/grid#chmod-R775/u01/app/grid#mkdir-p/u01/app/11.2.0/grid#chown-Rgrid:oinstall/u01/app/11.2.0/grid#chmod-R775/u01/app/11.2.0/grid#mkdir-p/u01/app/oraInventory#chown-Rgrid:oinstall/u01/app/oraInventory#chmod-R775/u01/app/oraInventory#mkdir-p/u01/oradata#mkdir-p/u01/shared_config#chown-Roracle:oinstall/u01/oradata#chown-Rgrid:oinstall/u01/shared_config#chmod-R775/u01/oradata/u01/shared_config

修改grid用户环境变量

#su-grid$vim/home/zkyg/.bash_profilealiasdf='df-h'aliasdu='du-sh'aliasla='ls-lha'ORACLE_SID=NFS1;exportORACLE_SIDJAVA_HOME=/usr/local/java;exportJAVA_HOMEORACLE_BASE=/u01/app/grid;exportORACLE_BASEORACLE_HOME=/u01/app/11.2.0/grid;exportORACLE_HOMEORACLE_PATH=/u01/app/oracle/common/oracle/sql;exportORACLE_PATHORACLE_TERM=xterm;exportORACLE_TERMNLS_DATE_FORMAT="DD-MON-YYYYHH24:MI:SS";exportNLS_DATE_FORMATTNS_ADMIN=$ORACLE_HOME/network/admin;exportTNS_ADMINORA_NLS11=$ORACLE_HOME/nls/data;exportORA_NLS11PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/binPATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/binPATH=${PATH}:/u01/app/common/oracle/binexportPATHLD_LIBRARY_PATH=$ORACLE_HOME/libLD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/libLD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/libexportLD_LIBRARY_PATHCLASSPATH=$ORACLE_HOME/JRECLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlibCLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlibCLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlibexportCLASSPATHTHREADS_FLAG=native;exportTHREADS_FLAGexportTEMP=/tmpexportTMPDIR=/tmpumask022

修改oracle用户环境变量

aliasdf='df-h'aliasdu='du-sh'aliasla='ls-lha'ORACLE_SID=racdb1;exportORACLE_SIDORACLE_UNQNAME=racdb;exportORACLE_UNQNAMEJAVA_HOME=/usr/local/java;exportJAVA_HOMEORACLE_BASE=/u01/app/oracle;exportORACLE_BASEORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1;exportORACLE_HOMEORACLE_PATH=/u01/app/common/oracle/sql;exportORACLE_PATHORACLE_TERM=xterm;exportORACLE_TERMNLS_DATE_FORMAT="DD-MON-YYYYHH24:MI:SS";exportNLS_DATE_FORMATTNS_ADMIN=$ORACLE_HOME/network/admin;exportTNS_ADMINORA_NLS11=$ORACLE_HOME/nls/data;exportORA_NLS11PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/binPATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/binPATH=${PATH}:/u01/app/common/oracle/binexportPATHLD_LIBRARY_PATH=$ORACLE_HOME/libLD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/libLD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/libexportLD_LIBRARY_PATHCLASSPATH=$ORACLE_HOME/JRECLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlibCLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlibCLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlibexportCLASSPATHTHREADS_FLAG=native;exportTHREADS_FLAGexportTEMP=/tmpexportTMPDIR=/tmpumask022

配置ssh双机信任（gird，oracle用户下都要配置）以oracle为例子

$ssh-keygen-trsa$ssh-keygen-tdsa$ssh-keygen-trsa$ssh-keygen-tdsa$cat.ssh/id_rsa.pub>>.ssh/authorized_keys$cat.ssh/id_dsa.pub>>.ssh/authorized_keys$sshrac2cat.ssh/id_rsa.pub>>.ssh/authorized_keys$sshrac2cat.ssh/id_dsa.pub>>.ssh/authorized_keys$scp.ssh/authorized_keysrac2:.ssh/authorized_keys

在二台机器测试是否正常

$sshrac1date$sshrac2date

以上操作需要在二台机器都要操作

配置nfs

Rac1上使用fdisk/dev/sdb分2个区sdb1、sdb2并进行格式化#mkfs.ext3/dev/sdb1#mkfs.ext3/dev/sdb2rac1上创建共享目录#mkdir-p/shared_config#mkdir-p/shared_data#vi/etc/fstab添加以下：/dev/sdb1/shared_configext3defaults00/dev/sdb2/shared_dataext3defaults00#vi/etc/exports设置共享/shared_config*(rw,sync,no_wdelay,insecure_locks,no_root_squash)/shared_data*(rw,sync,no_wdelay,insecure_locks,no_root_squash)#chkconfignfson开启nfs服务#servicenfsrestart#vi/etc/fstab添加以下开机挂载共享目录nas1:/shared_config/u01/shared_confignfsrw,bg,hard,nointr,noac,tcp,vers=3,timeo=600,rsize=32768,wsize=32768,actimeo=000nas1:/shared_data/u01/oradatanfsrw,bg,hard,nointr,tcp,vers=3,timeo=600,rsize=32768,wsize=32768,actimeo=000挂载相应的目录#mount/u01/shared_config#mount/u01/oradata#chowngrid:oinstall/u01/shared_config#chownoracle:oinstall/u01/oradata#chmod775/u01/oradata#chmod775/u01/app/11.2.0/grid

安装grid软件

unzipgrid-XXX.zip在root下输入xhost+#su–grid$cdgrid-XXX$./runcluvfy.shstage-precrsinst-nrac1,rac2-fixup-verbose|teecheck_grid.txt如果最后提示:集群服务设置的预检查成功.可以开始去安装grid否则请查看失败在什么地方解决后再次执行该命令行来检查.运行安装目录下的runInstaller$./runInstaller

以上就是Centos6.5 + Oracle 11g r2 + nfs如何搭建RAC环境，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注亿速云行业资讯频道。