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很多客户遇到过这样的情况:由于RAC其中一个节点的主机OS损坏,需要重装。而重装后怎样把节点加回集群呢? 这里将涉及的步骤整理如下: 1. 清除重装主机的OCR条目(这里以节点2重装为例,请将node2换成您节点2的主机名) # crsctl delete node -n node2 要检查上述步骤是否成功,在尚存节点执行"olsnodes"即可,重装的主机不应该出现在它列出的清单里。 以grid用户执行 $ olsnodes 2. 从OCR中删除重装主机的VIP信息 在尚存节点上执行: $ /grid/bin/srvctl remove vip -i node2-v -f 3. 清除重装主机的GI和DB home的inventory信息: 在尚存节点执行: 1)GI $ /grid/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/grid "CLUSTER_NODES=node1" CRS=TRUE -silent -local 注:这里CLUSTER_NODES是写尚存节点的清单 2)在db home下执行同样的步骤: $ /home/oracle/app/oracle/product/11.2.0/dbhome_1/oui/bin/runInstaller -updateNodeList ORACLE_HOME=/home/oracle/app/oracle/product/11.2.0/dbhome_1/ CLUSTER_NODES=node1 -silent -local 4. 下面开始添加节点。运行CVU检查: ./cluvfy stage -pre nodeadd -n node2 -verbose 在这里,由于OCR和voting disk在ASM中,并且使用了ASMLIB,最常见的错误是: ERROR: PRVF-5449 : Check of Voting Disk location "ORCL:DISK6(ORCL:DISK6)" failed on the following nodes: node2:No such file or directory PRVF-5431 : Oracle Cluster Voting Disk configuration check failed 在下面步骤中将解释这个错误的影响。 5. 在尚存节点上执行grid home下的"addNode.sh" . [oracle@node1] /grid/oui/bin% ./addNode.sh -silent "CLUSTER_NEW_NODES={node2}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={node2-v}" [oracle@node1] /grid/oui/bin% 在这里,上述命令没有任何信息就退出,实际上addNode.sh根本没运行。 原因 : ASMLIB在使用中,符合MOS Note : 1267569.1描述的问题 第四步的报错能帮我们发现它。 解决办法 : 设置如下环境变量并重新运行addNode.sh。 IGNORE_PREADDNODE_CHECKS=Y export IGNORE_PREADDNODE_CHECKS [oracle@node1] /grid/oui/bin% ./addNode.sh -silent "CLUSTER_NEW_NODES={node2}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={node2-v}" Starting Oracle Universal Installer... Checking swap space: must be greater than 500 MB. Actual 12143 MB Performing tests to see whether nodes node2 are available ............................................................... 100% Done. Cluster Node Addition Summary Global Settings Source: /grid New Nodes Space Requirements New Nodes node2 Instantiating scripts for add node (Tuesday, December 21, 2015 3:35:16 AM PST) . 1% Done. Instantiation of add node scripts complete Copying to remote nodes (Tuesday, December 21, 2015 3:35:18 AM PST) ............................................................................................... 96% Done. Home copied to new nodes Saving inventory on nodes (Tuesday, December 21, 2015 3:37:57 AM PST) . 100% Done. Save inventory complete WARNING: The following configuration scripts need to be executed as the "root" user in each cluster node. /grid/root.sh # On nodes node2 To execute the configuration scripts: 1. Open a terminal window 2. Log in as "root" 3. Run the scripts in each cluster node The Cluster Node Addition of /grid was successful. Please check '/tmp/silentInstall.log' for more details. 6. 在重装节点上执行root.sh来启动CRS stack. 这会结束该节点上GI的安装。 7. 在尚存节点上执行DB home下的addNode.sh /home/oracle/app/oracle/product/11.2.0/dbhome_1/addNode.sh -silent "CLUSTER_NEW_NODES={node2}" 8. 当DB Home添加完成,使用srvctl检查DB和实例的注册情况,如需要则添加他们。