RAC – Linux RH 3.0 com NFS para estudo

Apenas para estudo de RAC em casa.

Índice

Desenho da Solução HDs particionados com Partition Magic 8.0: 3

1 ) Instalar RedHat 3.0 – Default boot text 3

2 ) Alterar Hostname e /etc/hosts 4

3 ) Criação de grupo e usuário 4

4 ) Criando chave de autenticação nos servidores 4

5 ) Exportar NFS no servidor origem 5

6 ) Adicionar o hagcheck-timer no /etc/modules.conf 5

7 ) Ajuste parâmetros de Rede 6

8 ) Limites do usuário 6

9 ) Parâmetros de memória , semaphore e arquivo 6

10 ) Boot 6

11 ) Instalando CRS 7

12 ) Instalando o Binário do Banco com RAC 9

13 ) Adicionar entradas no .bash_profile 10

14) Brincar com o RAC 10

15) Fonte 11

Desenho da Solução HDs particionados com Partition Magic 8.0:

1 ) Instalar RedHat 3.0 – Default boot text 1.1 ) Partições padrões /tmp, /boot , / e 900 M Swap + /oradata (para no servidor Origem o NFS) 1,5G + /u01 (nos dois servidores este abrigará o Oracle_Home + CRS_HOME

1.2 ) Se instalar customizado escolher – Application Developer

2 ) Alterar Hostname e /etc/hosts 2.1) Hostname

Para fixar, colocar hostname e domínio no /etc/sysconfig/network

Para valer por este boot -> hostname rac1pub.hugo

hostname rac2pub.hugo

2.2) edição do /etc/hosts - em todos os nós

127.0.0.1 localhost.localdomain localhost

192.168.0.3 rac1pub.hugo rac1pub

192.168.0.6 rac2pub.hugo rac2pub

192.168.1.3 rac1pri.hugo rac1pri

192.168.1.6 rac2pri.hugo rac2pri

192.168.0.10 rac1vip.hugo rac1vip

192.168.0.11 rac2vip.hugo rac2vip

Rede Pública 192.168.1.x (ligadas com modem/switch wireless) rede privada 192.168.0.x (ligada com cabo Cross entre as duas máquinas)

3 ) Criação de grupo e usuário 3.1 ) Criar em todos os nós com a mesma numeração, 700 foi aleatório:

groupadd –g 700 dba

groupadd –g 701 oinstall

useradd –u 700 –g oinstall –G dba oracle

3.2 ) Alterar a senha do Oracle

passwd oracle

4 ) Criando chave de autenticação nos servidores 4.1 ) criar a chave em cada servidor

su – oracle

ssh-keygen –r dsa –b 1024

(não entrar com chave, colocar enter em tudo, dsa pode ser substituído por rsa)

4.2) copiar a chave de todos os servidores em um arquivo

cat /home/oracle/.ssh/dd_dsa.pub >> /home/oracle/.ssh/authorized_keys

obter todos os dd_dsa.pub em um arquivo authorized_keys com cat >>

O mesmo authorized_keys pode ser copiado para todos os servidores

4.3) Editar o config do ssh para não dar Warning de Xforward

vi /home/oracle/.ssh/config

Host *

ForwardX11 no

4.4) Verificar se está e se não tiver instalar o rhs-server-0.17...

rpm –Uvh rsh-server-0.17.17.i386.rpm

chkconfig rsh on

chkconfig rlogin on

service xinetd reload

4.5) Editar o /etc/hosts.equiv

+rac1pub oracle

+rac2pub oracle

+rac1pri oracle

+rac2pri oracle

+rac1vip oracle

+rac1vip oracle

(testar rsh e ssh entre os servidores, todos os nomes pub e pri)

5 ) Exportar NFS no servidor origem 5.1) Editar o /etc/exports

#

/oradata *(rw)

5.2) iniciar o nfs

/etc/init.d/nfs start

exportfs –a

5.3) Opções do NFS

vi /etc/modules.conf

options nfs nfs_uncached_io=1

5.4) Colocar o nfs no servidor destino

vi /etc/fstab

rac1pri:/oradata /oradata nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,noarc,vers=3,timeo=600 0 0

para montar

mount /oradata

6 ) Adicionar o hagcheck-timer no /etc/modules.conf options hangcheck-timer hangcheck_tick=30 hangcheck_margin=180

7 ) Ajuste parâmetros de Rede vi /etc/sysctl.conf

net.core.rmem_default=262144

net.core.wmem_default=262144

net.core.rmem_max=262144

net.core.wmem_max=262144

8 ) Limites do usuário vi /etc/security/limits.conf

oracle soft nofile 63536

oracle hard nofile 63536

oracle soft nproc 16384

oracle hard nproc 16384

9 ) Parâmetros de memória , semaphore e arquivo echo "kernel.shmmax=2147483648" >> /etc/sysctl.conf

echo "kernel.shmmni=4096" >> /etc/sysctl.conf

echo "kernel.shmall=2097152" >> /etc/sysctl.conf

echo "kernel.sem=250 32000 100 128" >> /etc/sysctl.conf

echo "fs.file-max=65536" >> /etc/sysctl.conf

10 ) Boot Antes de iniciar a instalação faça um reboot, lembrando que a ordem interfere no NFS

Inicie o servidor de NFS primeiro

11 ) Instalando CRS Setar as variáveis

ORACLE_BASE=/u01

ORACLE_SID=rac1

Oracle 10g Cluster Ready Services (CRS) R1 (10.1.0.2)

Iniciar no servidor de NFS

$ /mnt/cdrom/runInstaller

- Welcome Screen: Click Next

- Inventory directory and credentials:

Click Next

- Unix Group Name: Use "oinstall".

- Root Script Window: Open another window, login as root, and run /tmp/orainstRoot.sh

on the node where you launched runInstaller.

After you've run the script, click Continue.

- File Locations: I used the recommended default values:

Destination Name: OraCr10g_home1

Destination Path: /u01/oraclele/product/10.1.0/crs_1

Click Next

- Language Selection: Click Next

- Cluster Configuration:

Cluster Name: crs

Cluster Nodes: Public Node Name: rac1pub Private Node Name: rac1prv

Public Node Name: rac2pub Private Node Name: rac2prv

Public Node Name: rac3pub Private Node Name: rac3prv

Click Next

- Private Interconnect Enforcement:

Interface Name: eth0 Subnet: 192.168.0.0 Interface Type: Public

Interface Name: eth1 Subnet: 192.168.1.0 Interface Type: Private

Click Next

- Oracle Cluster Registry:

OCR Location: /oradata/OCRFile

Click Next

- Voting Disk: Voting disk file name: /oradata/CSSFile

Click Next

- Root Script Window:

Open another window, login as root, and execute

/u01/oraInventory/orainstRoot.sh on ALL RAC Nodes!

NOTE: For any reason Oracle does not create the log directory

"/u01/product/10.1.0/crs_1/log". If there are problems with

CRS, it will create log files in this directory, but only if it exists.

Therefore make sure to create this directory as oracle:

oracle$ mkdir /u01/product/10.1.0/crs_1/log

After you've run the script, click Continue.

- Setup Privileges Script Window:

Open another window, login as root, and execute

/u01/product/10.1.0/crs_1/root.sh on ALL RAC Nodes one by one!

Note that his can take a while. On the last RAC node, the output of the

script was as follows:

...

CSS is active on these nodes.

rac1pub

rac2pub

rac3pub

CSS is active on all nodes.

Oracle CRS stack installed and running under init(1M)

Click OK

- Summary: Click Install

- When installation is completed, click Exit.

One way to verify the CRS installation is to display all the nodes where CRS was installed:

oracle$ /u01/product/10.1.0/crs_1/bin/olsnodes -n

rac1pub 1

rac2pub 2

rac3pub 3

12 ) Instalando o Binário do Banco com RAC $ /mnt/cdrom/runInstaller

- Welcome Screen: Click Next

- File Locations: I used the default values:

Destination Name: raDb10g_home1

Destination Path: /u01/product/10.1.0/db_1

Click Next.

- Hardware Cluster Installation Mode:

Select "Cluster Installation"

Click "Select All" to select all servers: rac1pub, rac2pub, rac3pub

Click Next

NOTE: If it stops here and the status of a RAC node is "Node not reachable",

then perform the following checks:

- Check if the node where you launched OUI is able to do ssh without a

passphrase to the RAC node where the status is set to "Node not reachable".

- Check if the CRS is running this RAC node.

- Installation Type:

I selected "Enterprise Edition".

Click Next.

- Product-specific Prerequisite Checks:

Make sure that the status of each Check is set to "Succeeded".

Click Next

- Database Configuration:

<< Criar um banco teste >> datafiles devem ser alocados no /oradata/rac/data/ por exemplo

- Summary: Click Install

- Setup Privileges Window:

Open another window, login as root, and execute

/u01/product/10.1.0/db_1/root.sh on ALL RAC Nodes one by one!

NOTE: Make also sure that X is relinked to your local desktop since this

script will launch the "VIP Configuration Assistant" tool which is a

GUI based utility!

VIP Configuration Assistant Tool:

(This Assistant tool will come up only once when root.sh is executed the

first time in your RAC cluster)

- Welcome Click Next

- Network Interfaces: 2 interfaces, eth0 and eth1.

Click Next

- Virtual IPs for cluster nodes:

(for the alias names and IP address, see Setting Up the /etc/hosts File)

Node Name: rac1pub

IP Alias Name: rac1vip

IP address: 192.168.1.10

Subnet Mask: 255.255.255.0

Node Name: rac2pub

IP Alias Name: rac2vip

IP address: 192.168.1.11

Subnet Mask: 255.255.255.0

Click Next

- Summary: Click Finish

- Configuration Assistant Progress Dialog:

Click OK after configuration is complete.

- Configuration Results:

Click Exit

Click OK to close the Setup Privilege Window.

- End of Installation:

Click Exit

13 ) Adicionar entradas no .bash_profile export ORACLE_BASE=/u01

export ORACLE_SID=rac1 (para cara node deve ser o nome da instância rac1, rac2)

export ORACLE_HOME=$ORACLE_BASE/product/10.1.0/db_1

export PATH=$PATH:$ORACLE_HOME/bin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib

Obs: a cópia feita pelo Instalador do Oracle do nó de instalação para o segundo nó demora bastante.

14) Brincar com o RAC Sugestão, alterar os parâmetros de load_balance e failover nos tnsnames.

Ideal ter uma terceira máquina para conectar, ligada ao mesmo hub.

Shutar a máquina node 2. e reiniciar.

Verificar as entradas no initab feitas pelo instalador.

Verificar a criação do Virtual IP feita pelo instalador. (ifconfig –a)

15) Fonte http://www.puschitz.com/InstallingOracle10gRAC.shtml

http://metalink.oracle.com