OS:

[root@rac ~]# more /etc/oracle-release
Oracle Linux Server release 5.7

DB:

SQL> SELECT * FROM V$VERSION;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

目前擁有一套兩節點RAC：node1為rac，node2為rac1。新增的node3命令為rac2

準備工作：

1.首先，物理鏈路的準備。（儲存，心跳線互聯等）

2.根據前兩個節點安裝節點三的作業系統，安裝依賴的包，配置核心引數，/etc/hosts

3.在node3建立相應的組，使用者，目錄

注意：建立的組、使用者、ID要與前兩節點相同

4.確保每個節點之間ssh互信

注意：在oralce和grid使用者下都要配置ssh互信

5.驗證node1、node2與node3之間的連通性.

操作步驟：

1、配置ssh:

在rac2:

su - oracle
mkdir ~/.ssh
ssh-keygen -t rsa
ssh-keygen -t dsa

在rac和rac1：

su - oracle

ssh rac2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
ssh rac2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
scp ~/.ssh/authorized_keys rac2:~/.ssh/authorized_keys

在rac2：

su - grid

mkdir ~/.ssh
ssh-keygen -t rsa
ssh-keygen -t dsa

在rac和rac1：

su - grid

ssh rac2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
ssh rac2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
scp ~/.ssh/authorized_keys rac2:~/.ssh/authorized_keys

配置完成後在每個節點互信驗證

2、在11.2 GI中推出了octssd時間同步服務，使用octssd的話那麼建議禁用ntpd事件服務

[root@rac2 ~]#service ntpd stop

[root@rac2 ~]#chkconfig ntpd off
[root@rac2 ~]#mv /etc/ntp.conf /etc/ntp.conf.bak

[root@rac2 ~]#rm /var/run/ntpd.pid

3、驗證新新增的節點是否滿足cluster要求：

在節點一或節點二執行：

su - grid

cluvfy stage -pre nodeadd -n

[grid@rac ~]$cluvfy stage -pre nodeadd -n rac2

Performing pre-checks for node addition

Checking node reachability...
Node reachability check passed from node "rac"

Checking user equivalence...
User equivalence check passed for user "grid"

Checking node connectivity...

Checking hosts config file...

Verification of the hosts config file successful

Check: Node connectivity for interface "eth0"
Node connectivity passed for interface "eth0"

Node connectivity check passed

Checking CRS integrity...

CRS integrity check passed

Checking shared resources...

Checking CRS home location...
The location "/u01/app/grid" is not shared but is present/creatable on all nodes
Shared resources check for node addition passed

Checking node connectivity...

Checking hosts config file...

Verification of the hosts config file successful

Check: Node connectivity for interface "eth0"
Node connectivity passed for interface "eth0"

Check: Node connectivity for interface "eth1"
Node connectivity passed for interface "eth1"

Node connectivity check passed

Total memory check passed
Available memory check passed
Swap space check passed
Free disk space check passed for "rac2:/tmp"
Free disk space check passed for "rac:/tmp"
Check for multiple users with UID value 54322 passed
User existence check passed for "grid"
Run level check passed
Hard limits check failed for "maximum open file descriptors"
Check failed on nodes:
rac2
Soft limits check passed for "maximum open file descriptors"
Hard limits check passed for "maximum user processes"
Soft limits check passed for "maximum user processes"
System architecture check passed
Kernel version check passed
Kernel parameter check passed for "semmsl"
Kernel parameter check passed for "semmns"
Kernel parameter check passed for "semopm"
Kernel parameter check passed for "semmni"
Kernel parameter check passed for "shmmax"
Kernel parameter check passed for "shmmni"
Kernel parameter check passed for "shmall"
Kernel parameter check passed for "file-max"
Kernel parameter check passed for "ip_local_port_range"
Kernel parameter check passed for "rmem_default"
Kernel parameter check passed for "rmem_max"
Kernel parameter check passed for "wmem_default"
Kernel parameter check passed for "wmem_max"
Kernel parameter check passed for "aio-max-nr"
Package existence check passed for "make-3.81( x86_64)"
Package existence check passed for "binutils-2.17.50.0.6( x86_64)"
Package existence check passed for "gcc-4.1.2 (x86_64)( x86_64)"
Package existence check passed for "libaio-0.3.106 (x86_64)( x86_64)"
Package existence check passed for "glibc-2.5-24 (x86_64)( x86_64)"
Package existence check passed for "compat-libstdc++-33-3.2.3 (x86_64)( x86_64)"
Package existence check passed for "elfutils-libelf-0.125 (x86_64)( x86_64)"
Package existence check passed for "elfutils-libelf-devel-0.125( x86_64)"
Package existence check passed for "glibc-common-2.5( x86_64)"
Package existence check passed for "glibc-devel-2.5 (x86_64)( x86_64)"
Package existence check passed for "glibc-headers-2.5( x86_64)"
Package existence check passed for "gcc-c++-4.1.2 (x86_64)( x86_64)"
Package existence check passed for "libaio-devel-0.3.106 (x86_64)( x86_64)"
Package existence check passed for "libgcc-4.1.2 (x86_64)( x86_64)"
Package existence check passed for "libstdc++-4.1.2 (x86_64)( x86_64)"
Package existence check passed for "libstdc++-devel-4.1.2 (x86_64)( x86_64)"
Package existence check passed for "sysstat-7.0.2( x86_64)"
Package existence check passed for "ksh-20060214( x86_64)"
Check for multiple users with UID value 0 passed
Current group ID check passed

Checking OCR integrity...

OCR integrity check passed

Checking Oracle Cluster Voting Disk configuration...

Oracle Cluster Voting Disk configuration check passed
Time zone consistency check passed

Starting Clock synchronization checks using Network Time Protocol(NTP)...

NTP Configuration file check started...
No NTP Daemons or Services were found to be running

Clock synchronization check using Network Time Protocol(NTP) passed

User "grid" is not part of "root" group. Check passed
Checking consistency of file "/etc/resolv.conf" across nodes

File "/etc/resolv.conf" does not have both domain and search entries defined
domain entry in file "/etc/resolv.conf" is consistent across nodes
search entry in file "/etc/resolv.conf" is consistent across nodes
All nodes have one search entry defined in file "/etc/resolv.conf"
PRVF-5636 : The DNS response time for an unreachable node exceeded "15000" ms on following nodes: vrh3

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

Pre-check for node addition was unsuccessful on all the nodes.

如果我們不使用DNS解析域名方式的話，那麼resolv.conf不一致的問題可以忽略

4、在rac或rac1上進入/u01/app/grid/11.2.0/oui/bin目錄下，執行以下命令：

[grid@rac bin]$ export IGNORE_PREADDNODE_CHECKS=Y

[grid@rac bin]$ ./addNode.sh "CLUSTER_NEW_NODES={rac2}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={rac2-vip}" "CLUSTER_NEW_PRIVATE_NODE_NAMES={rac2-priv}"

Starting Oracle Universal Installer...

Performing tests to see whether nodes rac1,rac2 are available
............................................................... 100% Done.

..
-----------------------------------------------------------------------------
Cluster Node Addition Summary
Global Settings
Source: /u01/app/grid/11.2.0
New Nodes
Space Requirements
New Nodes
rac2
/: Required 4.02GB : Available 43.71GB
Installed Products
Product Names
Oracle Grid Infrastructure 11.2.0.3.0
Sun JDK 1.5.0.30.03
Installer SDK Component 11.2.0.3.0
Oracle One-Off Patch Installer 11.2.0.1.7
Oracle Universal Installer 11.2.0.3.0
Oracle USM Deconfiguration 11.2.0.3.0
Oracle Configuration Manager Deconfiguration 10.3.1.0.0
Enterprise Manager Common Core Files 10.2.0.4.4
Oracle DBCA Deconfiguration 11.2.0.3.0
Oracle RAC Deconfiguration 11.2.0.3.0
Oracle Quality of Service Management (Server) 11.2.0.3.0
Installation Plugin Files 11.2.0.3.0
Universal Storage Manager Files 11.2.0.3.0
Oracle Text Required Support Files 11.2.0.3.0
Automatic Storage Management Assistant 11.2.0.3.0
Oracle Database 11g Multimedia Files 11.2.0.3.0
Oracle Multimedia Java Advanced Imaging 11.2.0.3.0
Oracle Globalization Support 11.2.0.3.0
Oracle Multimedia Locator RDBMS Files 11.2.0.3.0
Oracle Core Required Support Files 11.2.0.3.0
Bali Share 1.1.18.0.0
Oracle Database Deconfiguration 11.2.0.3.0
Oracle Quality of Service Management (Client) 11.2.0.3.0
Expat libraries 2.0.1.0.1
Oracle Containers for Java 11.2.0.3.0
Perl Modules 5.10.0.0.1
Secure Socket Layer 11.2.0.3.0
Oracle JDBC/OCI Instant Client 11.2.0.3.0
Oracle Multimedia Client Option 11.2.0.3.0
LDAP Required Support Files 11.2.0.3.0
Character Set Migration Utility 11.2.0.3.0
Perl Interpreter 5.10.0.0.2
PL/SQL Embedded Gateway 11.2.0.3.0
OLAP SQL Scripts 11.2.0.3.0
Database SQL Scripts 11.2.0.3.0
Oracle Extended Windowing Toolkit 3.4.47.0.0
SSL Required Support Files for InstantClient 11.2.0.3.0
SQL*Plus Files for Instant Client 11.2.0.3.0
Oracle Net Required Support Files 11.2.0.3.0
Oracle Database User Interface 2.2.13.0.0
RDBMS Required Support Files for Instant Client 11.2.0.3.0
RDBMS Required Support Files Runtime 11.2.0.3.0
XML Parser for Java 11.2.0.3.0
Oracle Security Developer Tools 11.2.0.3.0
Oracle Wallet Manager 11.2.0.3.0
Enterprise Manager plugin Common Files 11.2.0.3.0
Platform Required Support Files 11.2.0.3.0
Oracle JFC Extended Windowing Toolkit 4.2.36.0.0
RDBMS Required Support Files 11.2.0.3.0
Oracle Ice Browser 5.2.3.6.0
Oracle Help For Java 4.2.9.0.0
Enterprise Manager Common Files 10.2.0.4.3
Deinstallation Tool 11.2.0.3.0
Oracle Java Client 11.2.0.3.0
Cluster Verification Utility Files 11.2.0.3.0
Oracle Notification Service (eONS) 11.2.0.3.0
Oracle LDAP administration 11.2.0.3.0
Cluster Verification Utility Common Files 11.2.0.3.0
Oracle Clusterware RDBMS Files 11.2.0.3.0
Oracle Locale Builder 11.2.0.3.0
Oracle Globalization Support 11.2.0.3.0
Buildtools Common Files 11.2.0.3.0
Oracle RAC Required Support Files-HAS 11.2.0.3.0
SQL*Plus Required Support Files 11.2.0.3.0
XDK Required Support Files 11.2.0.3.0
Agent Required Support Files 10.2.0.4.3
Parser Generator Required Support Files 11.2.0.3.0
Precompiler Required Support Files 11.2.0.3.0
Installation Common Files 11.2.0.3.0
Required Support Files 11.2.0.3.0
Oracle JDBC/THIN Interfaces 11.2.0.3.0
Oracle Multimedia Locator 11.2.0.3.0
Oracle Multimedia 11.2.0.3.0
HAS Common Files 11.2.0.3.0
Assistant Common Files 11.2.0.3.0
PL/SQL 11.2.0.3.0
HAS Files for DB 11.2.0.3.0
Oracle Recovery Manager 11.2.0.3.0
Oracle Database Utilities 11.2.0.3.0
Oracle Notification Service 11.2.0.3.0
SQL*Plus 11.2.0.3.0
Oracle Netca Client 11.2.0.3.0
Oracle Net 11.2.0.3.0
Oracle JVM 11.2.0.3.0
Oracle Internet Directory Client 11.2.0.3.0
Oracle Net Listener 11.2.0.3.0
Cluster Ready Services Files 11.2.0.3.0
Oracle Database 11g 11.2.0.3.0
-----------------------------------------------------------------------------

Instantiating scripts for add node (Tuesday, August 13, 2013 3:01:07 AM CST)
. 1% Done.
Instantiation of add node scripts complete

Copying to remote nodes (Tuesday, August 13, 2013 3:01:13 AM CST)
............................................................................................... 96% Done.
Home copied to new nodes

Saving inventory on nodes (Tuesday, August 13, 2013 3:05:58 AM CST)
. 100% Done.
Save inventory complete
WARNING:A new inventory has been created on one or more nodes in this session. However, it has not yet been registered as the central inventory of this system.
To register the new inventory please run the script at '/u01/app/oraInventory/orainstRoot.sh' with root privileges on nodes 'rac2'.
If you do not register the inventory, you may not be able to update or patch the products you installed.
The following configuration scripts need to be executed as the "root" user in each new cluster node. Each script in the list below is followed by a list of nodes.
/u01/app/oraInventory/orainstRoot.sh #On nodes rac2
/u01/app/grid/11.2.0/root.sh #On nodes rac2
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 /u01/app/grid/11.2.0 was successful.
Please check '/tmp/silentInstall.log' for more details.

命令執行完後，根據提示執行指令碼(此步驟就不寫了)，執行完指令碼叢集節點新增成功，下面開始對新新增的節點安裝RAC軟體

5、在rac或rac1，以oracle使用者進入/u01/app/oracle/11.2.0/db_1/oui/bin，新增軟體

[root@rac bin]# su - oracle

[oracle@rac bin]$ export IGNORE_PREADDNODE_CHECKS=Y

[oracle@rac bin]$ ./addNode.sh "CLUSTER_NEW_NODES={rac2}"

在vnc執行的輸出結果，直接截圖了。

<img title="oracle11g RAC新增節點" name="image_operate_61791376385659990" alt="oracle11g RAC新增節點" src="" width="690" height="354" real_src="" action-type="show-slide" action-data="http%3A%2F%2Fs9.sinaimg.cn%2Fmw690%2F86aa5b07gx6BP7xN3UAa8%26690" />

在節點三，根據提示執行指令碼，執行完指令碼軟體安裝完成。

6、在rac或rac1，用oracle使用者執行dbca命令，新增例項

[root@rac ~]# xhost +

[root@rac ~]# su - oracle

[oracle@rac ~]$ dbca

oracle11g RAC新增節點

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