添加rac集群新节点以及删除rac节点实验

原创 Leo 2023-12-09

895

文档课题：添加rac集群新节点以及删除rac节点实验.

1、架构介绍

2、新节点前期准备
--配置与原rac节点相同参数的节点3.

2.1、系统版本
# cat /etc/centos-release
CentOS Linux release 7.9.2009 (Core)

2.2、移除虚拟嵌套
# yum remove libvirt-libs

3、网络配置
3.1、添加网卡
给新增主机额外添加1块网卡
说明：此处ens37缺少配置文件，拷贝ens33.
然后按如下修改：
# vi ifcfg-ens37
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens37
UUID=03f506b2-a9fb-4b64-94e2-1208c732a649
DEVICE=ens37
ONBOOT=yes
IPADDR=192.168.78.193
HWADDR=00:0C:29:43:D4:EF
PREFIX=24
#GATEWAY=192.168.133.2
#DNS1=192.168.133.2
IPV6_PRIVACY=no

# service network restart

[root@rac3 network-scripts]# nmcli con show
NAME   UUID                                  TYPE      DEVICE
ens33 a35b793b-c550-40ba-a2b8-5750939e844b ethernet ens33
ens37 03f506b2-a9fb-4b64-94e2-1208c732a649 ethernet ens37

3.2、修改hosts文件
说明：节点1&2均添加节点3的IP信息.
[root@rac3 ~]# vi /etc/hosts
添加如下内容：
#Public IP (ens33)
192.168.133.191 rac1
192.168.133.192 rac2
192.168.133.196 rac3

#Private IP (ens37)
192.168.78.191 rac1-priv
192.168.78.192 rac2-priv
192.168.78.193 rac3-priv

#Virtual IP
192.168.133.193 rac1-vip
192.168.133.194 rac2-vip
192.168.133.197 rac3-vip

#Scan IP
192.168.133.195 rac-scan

#此处公网和私网能ping通，其它三个不能ping通才正常

3.3、配置Yum源
# mount /dev/sr0 /mnt
# cat <<EOF>>/etc/yum.repos.d/local.repo
[local]
name=local
baseurl=file:///mnt
gpgcheck=0
enabled=1
EOF

# yum makecache

3.4、安装依赖包
# yum groupinstall -y "Server with GUI"
yum install -y bc \
binutils \
compat-libcap1 \
compat-libstdc++-33 \
gcc \
gcc-c++ \
elfutils-libelf \
elfutils-libelf-devel \
glibc \
glibc-devel \
ksh \
libaio \
libaio-devel \
libgcc \
libstdc++ \
libstdc++-devel \
libxcb \
libX11 \
libXau \
libXi \
libXtst \
libXrender \
libXrender-devel \
make \
net-tools \
nfs-utils \
smartmontools \
sysstat \
e2fsprogs \
e2fsprogs-libs \
fontconfig-devel \
expect \
unzip \
openssh-clients \
readline* \
tigervnc* \
psmisc --skip-broken

#手动上传并安装依赖包：pdksh-5.2.14-37.el5.x86_64.rpm和compat-libstdc++-33-3.2.3-72.el7.x86_64.rpm
sftp> lcd F:\package
sftp> cd /tmp
sftp> put pdksh-5.2.14-37.el5.x86_64.rpm
sftp> put compat-libstdc++-33-3.2.3-72.el7.x86_64.rpm

# cd /tmp
# rpm -ivh compat-libstdc++-33-3.2.3-72.el7.x86_64.rpm
# rpm -e ksh-20120801-142.el7.x86_64
# rpm -ivh pdksh-5.2.14-37.el5.x86_64.rpm

检查依赖包安装情况
# rpm -q bc binutils compat-libcap1 compat-libstdc++-33 gcc gcc-c++ elfutils-libelf elfutils-libelf-devel glibc glibc-devel ksh libaio libaio-devel libgcc libstdc++ libstdc++-devel libxcb libX11 libXau libXi libXtst libXrender libXrender-devel make net-tools nfs-utils smartmontools sysstat e2fsprogs e2fsprogs-libs fontconfig-devel expect unzip openssh-clients readline | grep "not installed"
注意：package ksh is not installed
说明：安装gi/db时不会因缺少此包报警

root用户下，cvuqdisk安装
将cvuqdisk传输到节点三安装.
[grid@rac1 rpm]$ scp cvuqdisk-1.0.9-1.rpm root@192.168.133.196:/tmp
[root@rac3 tmp]# rpm -ivh cvuqdisk-1.0.9-1.rpm

3.5、关闭防火墙
# systemctl status firewalld.service
# systemctl stop firewalld.service
# systemctl disable firewalld.service

3.6、禁用selinux
将SELINUX修改为disabled
# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

注意：需重启主机，才能生效

3.7、关闭ntp和chrony服务
从oracle 11gR2 rac开始使用Cluster Time Synchronization Service(CTSS)同步各节点的时间.
此处关闭NTP、chrony服务，Oracle会自动启用ctssd进程.
systemctl stop ntpd
systemctl disable ntpd.service
mv /etc/ntp.conf /etc/ntp.conf.bak
systemctl disable chronyd
systemctl stop chronyd
mv /etc/chrony.conf /etc/chrony.conf_bak

3.8、关闭透明大页和numa
备注：关闭透明大页和numa，重启生效
# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
# sed -i 's/quiet/quiet transparent_hugepage=never numa=off/' /etc/default/grub
# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet transparent_hugepage=never numa=off"
GRUB_DISABLE_RECOVERY="true"
# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-1160.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-1160.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-954f0e9a62d9487e8bcb8e8598b71fab
Found initrd image: /boot/initramfs-0-rescue-954f0e9a62d9487e8bcb8e8598b71fab.img
done
重启前参数
# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-1160.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=en_US.UTF-8
重启后结果
# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]
# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-1160.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet transparent_hugepage=never numa=off

3.9、avahi-daemon配置
[root@hisdb1 ~]# yum install -y avahi*
[root@hisdb1 ~]# systemctl stop avahi-daemon.socket
[root@hisdb1 ~]# systemctl stop avahi-daemon.service
[root@hisdb1 ~]# pgrep -f avahi-daemon | awk '{print "kill -9 "$2}'

配置NOZEROCONF=yes
# cat <<EOF>>/etc/sysconfig/network
NOZEROCONF=yes
EOF

查看状态
# systemctl status avahi-daemon.socket
# systemctl status avahi-daemon.service

3.10、修改/etc/sysctl.conf文件
# cat <<EOF>>/etc/sysctl.conf
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 8181829631
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
net.ipv4.conf.ens33.rp_filter = 1
net.ipv4.conf.ens37.rp_filter = 2
EOF
# /sbin/sysctl -p

3.11、修改用户限制
# cat <<EOF>>/etc/security/limits.conf
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft stack 10240
oracle hard stack 32768
oracle soft nproc 2047
oracle hard nproc 16384
oracle hard memlock 134217728
oracle soft memlock 134217728

grid soft nofile 1024
grid hard nofile 65536
grid soft stack 10240
grid hard stack 32768
grid soft nproc 2047
grid hard nproc 16384
EOF

3.12、修改/etc/pam.d/login文件
# cat <<EOF>>/etc/pam.d/login
session required pam_limits.so
session required /lib64/security/pam_limits.so
EOF

3.13、创建用户、用户组、目录
/usr/sbin/groupadd -g 54321 oinstall
/usr/sbin/groupadd -g 54322 dba
/usr/sbin/groupadd -g 54323 oper
/usr/sbin/groupadd -g 54324 backupdba
/usr/sbin/groupadd -g 54325 dgdba
/usr/sbin/groupadd -g 54326 kmdba
/usr/sbin/groupadd -g 54327 asmdba
/usr/sbin/groupadd -g 54328 asmoper
/usr/sbin/groupadd -g 54329 asmadmin
/usr/sbin/groupadd -g 54330 racdba
/usr/sbin/useradd -u 11012 -g oinstall -G asmadmin,asmdba,asmoper,dba,racdba,oper grid
/usr/sbin/useradd -u 54321 -g oinstall -G asmdba,dba,backupdba,dgdba,kmdba,racdba,oper oracle
echo "oracle_4U" |passwd oracle --stdin
echo "grid_4U" |passwd grid --stdin
mkdir -p /u01/app/11.2.0/grid
mkdir -p /u01/app/grid
mkdir -p /u01/app/oracle/product/11.2.0/db
mkdir -p /u01/app/oraInventory
mkdir -p /backup
mkdir -p /home/oracle/scripts
chown -R oracle:oinstall /backup
chown -R oracle:oinstall /home/oracle/scripts
chown -R grid:oinstall /u01
chown -R grid:oinstall /u01/app/grid
chown -R grid:oinstall /u01/app/11.2.0/grid
chown -R grid:oinstall /u01/app/oraInventory
chown -R oracle:oinstall /u01/app/oracle
chmod -R 775 /u01

3.14、用户环境变量
grid用户：
$ cat <<EOF>>/home/grid/.bash_profile
umask 022
export TMP=/tmp
export TMPDIR=\$TMP
export NLS_LANG=AMERICAN_AMERICA.AL32UTF8
export ORACLE_BASE=/u01/app/grid
export ORACLE_HOME=/u01/app/11.2.0/grid
export ORACLE_TERM=xterm
export TNS_ADMIN=\$ORACLE_HOME/network/admin
export LD_LIBRARY_PATH=\$ORACLE_HOME/lib:/lib:/usr/lib
export ORACLE_SID=+ASM3
export PATH=/usr/sbin:\$PATH
export PATH=\$ORACLE_HOME/bin:\$ORACLE_HOME/OPatch:\$PATH
alias sas='sqlplus / as sysasm'
#export PS1="[\`whoami\`@\`hostname\`:"'\$PWD]\$ '
EOF

$ source .bash_profile

注意：节点3为+ASM3

oracle用户：
$ cat <<EOF>>/home/oracle/.bash_profile
umask 022
export TMP=/tmp
export TMPDIR=\$TMP
export NLS_LANG=AMERICAN_AMERICA.AL32UTF8
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=\$ORACLE_BASE/product/11.2.0/db
export ORACLE_TERM=xterm
export TNS_ADMIN=\$ORACLE_HOME/network/admin
export LD_LIBRARY_PATH=\$ORACLE_HOME/lib:/lib:/usr/lib
export ORACLE_SID=orcl3
export PATH=/usr/sbin:\$PATH
export PATH=\$ORACLE_HOME/bin:\$ORACLE_HOME/OPatch:\$PATH
alias sas='sqlplus / as sysdba'
#export PS1="[\`whoami\`@\`hostname\`:"'\$PWD]\$ '
EOF

$ source .bash_profile

注意：节点3 为orcl3
3.14、修改/etc/profile文件
# vim /etc/profile
末尾添加：
if [ $USER = "oracle" ] || [ $USER = "grid" ]; then
        if [ $SHELL = "/bin/ksh" ]; then
              ulimit -p 16384
              ulimit -n 65536
        else
              ulimit -u 16384 -n 65536
        fi
        umask 022
fi
# source /etc/profile
备注：此为设置系统限制

4、共享存储
节点3添加共享磁盘后修改主机的.vmx文件后再开启主机.
.vmx文件添加如下内容：
disk.locking = "FALSE"
disk.EnableUUID = "TRUE"

--重读分区
[root@rac3 ~]# partprobe

5、multipath
5.1、安装multipath
# yum -y install device-mapper*
# mpathconf --enable --with_multipathd y

5.2、查看共享盘的scsi_id
[root@hisdb1 ~]# /usr/lib/udev/scsi_id -g -u /dev/sdb
36000c2967b415216947d577e41c3ae0e
[root@hisdb1 ~]# /usr/lib/udev/scsi_id -g -u /dev/sdc
36000c29cc1beff5fa34e51edc68b8d1e

5.3、配置multipath
wwid值为上面获取的scsi_id,alias可自定义.
# cat <<EOF>/etc/multipath.conf
defaults {
    user_friendly_names yes
}

blacklist {
devnode "^sda"
}
multipaths {
multipath {
wwid "36000c29ab97a3c68a42010d3ff22c349"
alias ocr
}
multipath {
wwid "36000c292c1ebe544c644ebecafc5e794"
alias data
}
}
EOF

5.4、激活multipath多路径
# multipath -F
# multipath -v2
# multipath -ll
data (36000c292c1ebe544c644ebecafc5e794) dm-4 VMware, ,VMware Virtual S
size=20G features='0' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=1 status=active
`- 0:0:2:0 sdc 8:32 active ready running
ocr (36000c29ab97a3c68a42010d3ff22c349) dm-2 VMware, ,VMware Virtual S
size=10G features='0' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=1 status=active
`- 0:0:1:0 sdb 8:16 active ready running

# lsblk -p
NAME                           MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
/dev/sda                         8:0    0 100G 0 disk
├─/dev/sda1                      8:1    0    1G 0 part /boot
└─/dev/sda2                      8:2    0   99G 0 part
├─/dev/mapper/rhel_rac3-root 253:0    0   95G 0 lvm   /
└─/dev/mapper/rhel_rac3-swap 253:1    0    4G 0 lvm   [SWAP]
/dev/sdb                         8:16   0   10G 0 disk
├─/dev/sdb1                      8:17   0   10G 0 part
└─/dev/mapper/ocr              253:2    0   10G 0 mpath
└─/dev/mapper/ocr1           253:3    0   10G 0 part
/dev/sdc                         8:32   0   20G 0 disk
├─/dev/sdc1                      8:33   0   20G 0 part
└─/dev/mapper/data             253:4    0   20G 0 mpath
└─/dev/mapper/data1          253:5    0   20G 0 part
/dev/sr0                        11:0    1 4.2G 0 rom

6、asmlib
6.1、文件上传
sftp> cd /root
sftp> lcd F:\package\asmlib\el7
sftp> lls
kmod-oracleasm-2.0.8-21.0.1.el7.x86_64.rpm oracleasm-support-2.1.11-2.el7.x86_64.rpm
oracleasmlib-2.0.12-1.el7.x86_64.rpm
sftp> put *.rpm

6.2、安装asmlib
# rpm -ivh oracleasm-support-2.1.11-2.el7.x86_64.rpm
# rpm -ivh kmod-oracleasm-2.0.8-21.0.1.el7.x86_64.rpm
# rpm -ivh oracleasmlib-2.0.12-1.el7.x86_64.rpm

6.3、配置asmlib
[root@rac3 ~]# /usr/sbin/oracleasm configure -i
Configuring the Oracle ASM library driver.

This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets ('[]'). Hitting <ENTER> without typing an
answer will keep that current value. Ctrl-C will abort.

Default user to own the driver interface []: grid
Default group to own the driver interface []: asmadmin
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]: y
Writing Oracle ASM library driver configuration: done

[root@rac3 ~]# /usr/sbin/oracleasm init
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": oracleasm
Configuring "oracleasm" to use device physical block size
Mounting ASMlib driver filesystem: /dev/oracleasm

6.4、创建asm磁盘
说明：此步仅在节点1执行
# oracleasm createdisk data01 /dev/mapper/ocr1
# oracleasm createdisk data02 /dev/mapper/data1
说明：6.4步骤不用执行.

6.5、验证磁盘
[root@rac3 ~]# oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
Instantiating disk "DATA01"
Instantiating disk "DATA02"
[root@rac3 ~]# oracleasm listdisks
DATA01
DATA02
[root@rac3 ~]# oracleasm querydisk DATA01
Disk "DATA01" is a valid ASM disk
[root@rac3 ~]# oracleasm querydisk DATA02
Disk "DATA02" is a valid ASM disk
[root@rac3 ~]# ls -ltr /dev/oracleasm/disks
total 0
brw-rw---- 1 grid asmadmin 8, 17 Dec 9 11:08 DATA01
brw-rw---- 1 grid asmadmin 8, 33 Dec 9 11:08 DATA02

7、互信
7.1、配置grid ssh用户等效性
[root@rac3 tmp]# su - grid
[grid@rac3 ~]$ mkdir ~/.ssh
[grid@rac3 ~]$ chmod 700 ~/.ssh

--使用如下命令生成用户身份认证秘钥
[grid@rac3 ~]$ ssh-keygen -t rsa
--一路回车

[grid@rac3 ~]$ ssh-keygen -t dsa
--一路回车

节点1：
[grid@rac1 ~]$ ssh rac3 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
[grid@rac1 ~]$ scp ~/.ssh/authorized_keys rac3:~/.ssh/

节点2：
[grid@rac2 .ssh]$ ssh rac3 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

测试
节点3:
[grid@rac3 .ssh]$ ssh rac1 date
[grid@rac3 ~]$ ssh rac1-priv date
[grid@rac3 .ssh]$ ssh rac2 date
[grid@rac3 ~]$ ssh rac2-priv date

节点1：
[grid@rac1 ~]$ ssh rac3 date
[grid@rac1 ~]$ ssh rac3-priv date

节点2：
[grid@rac2 ~]$ ssh rac3 date
[grid@rac2 ~]$ ssh rac3-priv date

#需要达到不输入yes

7.2、配置oracle ssh用户等效性
[root@rac3 tmp]# su - oracle
[oracle@rac3 ~]$ mkdir ~/.ssh
[oracle@rac3 ~]$ chmod 700 ~/.ssh

--使用如下命令生成用户身份认证秘钥
[oracle@rac3 ~]$ ssh-keygen -t rsa
--一路回车

[oracle@rac3 ~]$ ssh-keygen -t dsa
--一路回车

节点1：
[oracle@rac1 ~]$ ssh rac3 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
[oracle@rac1 ~]$ scp ~/.ssh/authorized_keys rac3:~/.ssh/

节点2：
[oracle@rac2 ~]$ ssh rac3 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
测试
节点3:
[oracle@rac3 ~]$ ssh rac1 date
[oracle@rac3 .ssh]$ ssh rac1-priv date
[oracle@rac3 ~]$ ssh rac2 date
[oracle@rac3 .ssh]$ ssh rac2-priv date

节点1：
[oracle@rac1 ~]$ ssh rac3 date
[oracle@rac1 ~]$ ssh rac3-priv date

节点2：
[oracle@rac2 ~]$ ssh rac3 date
[oracle@rac2 ~]$ ssh rac3-priv date

#需要达到不输入yes

8、CVU工具检查
[grid@rac1 ~]$ cluvfy stage -pre nodeadd -n rac3 -verbose
说明：显示Pre-check for node addition was successful表示成功.

[oracle@rac2 ~]$ cluvfy stage -pre nodeadd -n rac3 -verbose
说明：显示Pre-check for node addition was successful表示成功.

9、新节点添加Clusterware
9.1、添加Clusterware
Step1：在任何一个现有节点以grid用户执行如下命令添加Clusterware
[grid@rac1 ~]$ cd /u01/app/11.2.0/grid/oui/bin
[grid@rac1 bin]$ ./addNode.sh -silent "CLUSTER_NEW_NODES={rac3}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={rac3-vip}"

Step2：在新节点以root用户执行如下命令(上一步骤输出最后有提示)
[root@rac3 ~]# /u01/app/oraInventory/orainstRoot.sh
[root@rac3 ~]# /u01/app/11.2.0/grid/root.sh

9.2、验证新节点添加情况
[grid@rac1 bin]$ crs_stat -t
Name           Type           Target    State     Host
------------------------------------------------------------
ora.DATA.dg    ora....up.type ONLINE    ONLINE    rac1
ora....ER.lsnr ora....er.type ONLINE    ONLINE    rac1
ora....N1.lsnr ora....er.type ONLINE    ONLINE    rac2
ora.OCR.dg     ora....up.type ONLINE    ONLINE    rac1
ora.asm        ora.asm.type   ONLINE    ONLINE    rac1
ora.cvu        ora.cvu.type   ONLINE    ONLINE    rac1
ora.gsd        ora.gsd.type   OFFLINE   OFFLINE
ora....network ora....rk.type ONLINE    ONLINE    rac1
ora.oc4j       ora.oc4j.type ONLINE    ONLINE    rac1
ora.ons        ora.ons.type   ONLINE    ONLINE    rac1
ora.orcl.db    ora....se.type ONLINE    ONLINE    rac1
ora....SM1.asm application    ONLINE    ONLINE    rac1
ora....C1.lsnr application    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    OFFLINE   OFFLINE
ora.rac1.ons   application    ONLINE    ONLINE    rac1
ora.rac1.vip   ora....t1.type ONLINE    ONLINE    rac1
ora....SM2.asm application    ONLINE    ONLINE    rac2
ora....C2.lsnr application    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    OFFLINE   OFFLINE
ora.rac2.ons   application    ONLINE    ONLINE    rac2
ora.rac2.vip   ora....t1.type ONLINE    ONLINE    rac2
ora....SM3.asm application    ONLINE    ONLINE    rac3
ora....C3.lsnr application    ONLINE    ONLINE    rac3
ora.rac3.gsd   application    OFFLINE   OFFLINE
ora.rac3.ons   application    ONLINE    ONLINE    rac3
ora.rac3.vip   ora....t1.type ONLINE    ONLINE    rac3
ora.scan1.vip ora....ip.type ONLINE    ONLINE    rac2

10、新节点添加RAC Database Software
10.1、添加数据库软件
Step1：在任何一个现节点以oracle用户执行下面命令添加RAC Database Software
[root@rac1 ~]# su - oracle
[oracle@rac1 ~]$ cd $ORACLE_HOME/oui/bin
[oracle@rac1 bin]$ ./addNode.sh -silent "CLUSTER_NEW_NODES={rac3}"

Step2:在新节点以root用户执行如下命令(上一步骤输出最后有提示)
[root@rac3 ~]# /u01/app/oracle/product/11.2.0/db/root.sh

说明：在执行root.sh前先解决/u01/app/oracle/product/11.2.0/db/bin/nmhs问题,否则报错如下.
Now product-specific root actions will be performed.
/bin/chown: cannot access ‘/u01/app/oracle/product/11.2.0/db/bin/nmhs’: No such file or directory
/bin/chmod: cannot access ‘/u01/app/oracle/product/11.2.0/db/bin/nmhs’: No such file or directory
Finished product-specific root actions.

解决方案：
[root@rac1 ~]# ls -ltr /u01/app/oracle/product/11.2.0/db/bin/nmhs
-rws--x--- 1 root oinstall 0 Aug 24 2013 /u01/app/oracle/product/11.2.0/db/bin/nmhs
[root@rac1 ~]# scp /u01/app/oracle/product/11.2.0/db/bin/nmhs rac3:/u01/app/oracle/product/11.2.0/db/bin/
[root@rac3 tmp]# chown root:ointall /u01/app/oracle/product/11.2.0/db/bin/nmhs
[root@rac3 tmp]# chmod 4710 /u01/app/oracle/product/11.2.0/db/bin/nmhs

[root@rac3 bin]# /u01/app/oracle/product/11.2.0/db/root.sh
Performing root user operation for Oracle 11g

The following environment variables are set as:
    ORACLE_OWNER= oracle
    ORACLE_HOME= /u01/app/oracle/product/11.2.0/db

Enter the full pathname of the local bin directory: [/usr/local/bin]:
The contents of "dbhome" have not changed. No need to overwrite.
The contents of "oraenv" have not changed. No need to overwrite.
The contents of "coraenv" have not changed. No need to overwrite.

Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Finished product-specific root actions.

10.2、CVU工具检查
Grid用户：
[grid@rac1 ~]$ cluvfy stage -post nodeadd -n rac3 -verbose

Oracle用户：
[oracle@rac1 ~]$ cluvfy stage -post nodeadd -n rac3 -verbose

说明：通过如上命令检查新节点上的GI和Database Software是否添加正确.
此处会报rac-scan无法解析的告警，PRVG-1101、PRVF-4657、PRVF-4664，忽略.

11、新节点添加数据库实例
11.1、新节点添加实例
--检查现有实例.
[grid@rac2 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rac1
Instance orcl2 is running on node rac2

--在任何一个现有节点以oracle用户执行如下命令添加新节点数据库实例
[oracle@rac1 ~]$ dbca -silent -addInstance -nodeList "rac3" -gdbName "orcl" -instanceName "orcl3" -sysDBAUserName "sys" -sysDBAPassword oracle_4U

参数说明：
dbca -silent -addInstance -nodeList [node_name] -gdbName [globle_dbname] -instanceName [newnode_instance] -sysDBAUserName [sysdba] -sysDBAPassword [password]
-silent:静默方式
[node_name]:添加实例的节点名称
[globle_dbname]:全局数据库名称
[newnode_instance]:添加实例名称
[sysdba]:拥有sysdba权限的oracle用户名称
[password]:拥有sysdba权限的oracle用户的密码

11.2、集群检查
[grid@rac1 ~]$ crs_stat -t -v
Name           Type           R/RA   F/FT   Target    State     Host
----------------------------------------------------------------------
ora.DATA.dg    ora....up.type 0/5    0/     ONLINE    ONLINE    rac1
ora....ER.lsnr ora....er.type 0/5    0/     ONLINE    ONLINE    rac1
ora....N1.lsnr ora....er.type 0/5    0/0    ONLINE    ONLINE    rac2
ora.OCR.dg     ora....up.type 0/5    0/     ONLINE    ONLINE    rac1
ora.asm        ora.asm.type   0/5    0/     ONLINE    ONLINE    rac1
ora.cvu        ora.cvu.type   0/5    0/0    ONLINE    ONLINE    rac1
ora.gsd        ora.gsd.type   0/5    0/     OFFLINE   OFFLINE
ora....network ora....rk.type 0/5    0/     ONLINE    ONLINE    rac1
ora.oc4j       ora.oc4j.type 0/1    0/2    ONLINE    ONLINE    rac1
ora.ons        ora.ons.type   0/3    0/     ONLINE    ONLINE    rac1
ora.orcl.db    ora....se.type 0/2    0/1    ONLINE    ONLINE    rac1
ora....SM1.asm application    0/5    0/0    ONLINE    ONLINE    rac1
ora....C1.lsnr application   0/5    0/0    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    0/5    0/0    OFFLINE   OFFLINE
ora.rac1.ons   application    0/3    0/0    ONLINE    ONLINE    rac1
ora.rac1.vip   ora....t1.type 0/0    0/0    ONLINE    ONLINE    rac1
ora....SM2.asm application    0/5    0/0    ONLINE    ONLINE    rac2
ora....C2.lsnr application    0/5    0/0    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    0/5    0/0    OFFLINE   OFFLINE
ora.rac2.ons   application    0/3    0/0    ONLINE    ONLINE    rac2
ora.rac2.vip   ora....t1.type 0/0    0/0    ONLINE    ONLINE    rac2
ora....SM3.asm application    0/5    0/0    ONLINE    ONLINE    rac3
ora....C3.lsnr application    0/5    0/0    ONLINE    ONLINE    rac3
ora.rac3.gsd   application    0/5    0/0    OFFLINE   OFFLINE
ora.rac3.ons   application    0/3    0/0    ONLINE    ONLINE    rac3
ora.rac3.vip   ora....t1.type 0/0    0/0    ONLINE    ONLINE    rac3
ora.scan1.vip ora....ip.type 0/0    0/0    ONLINE    ONLINE    rac2

[grid@rac3 ~]$ crsctl stat res -t
-------------------------------------------------------------------------------
NAME           TARGET STATE        SERVER                   STATE_DETAILS
-------------------------------------------------------------------------------
Local Resources
-------------------------------------------------------------------------------
ora.DATA.dg
               ONLINE ONLINE       rac1
               ONLINE ONLINE       rac2
               ONLINE ONLINE       rac3
ora.LISTENER.lsnr
               ONLINE ONLINE       rac1
               ONLINE ONLINE       rac2
               ONLINE ONLINE       rac3
ora.OCR.dg
               ONLINE ONLINE       rac1
               ONLINE ONLINE       rac2
               ONLINE ONLINE       rac3
ora.asm
               ONLINE ONLINE       rac1                     Started
               ONLINE ONLINE       rac2                     Started
               ONLINE ONLINE       rac3                     Started
ora.gsd
               OFFLINE OFFLINE      rac1
               OFFLINE OFFLINE      rac2
               OFFLINE OFFLINE      rac3
ora.net1.network
               ONLINE ONLINE       rac1
               ONLINE ONLINE       rac2
               ONLINE ONLINE       rac3
ora.ons
               ONLINE ONLINE       rac1
               ONLINE ONLINE       rac2
               ONLINE ONLINE       rac3
-------------------------------------------------------------------------------
Cluster Resources
-------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE ONLINE       rac2
ora.cvu
      1        ONLINE ONLINE       rac1
ora.oc4j
      1        ONLINE ONLINE       rac1
ora.orcl.db
      1        ONLINE ONLINE       rac1                     Open
      2        ONLINE ONLINE       rac2                     Open
      3        ONLINE ONLINE       rac3                     Open
ora.rac1.vip
      1        ONLINE ONLINE       rac1
ora.rac2.vip
      1        ONLINE ONLINE       rac2
ora.rac3.vip
      1        ONLINE ONLINE       rac3
ora.scan1.vip
      1        ONLINE ONLINE       rac2

[grid@rac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rac1
Instance orcl2 is running on node rac2
Instance orcl3 is running on node rac3

[grid@rac1 ~]$ srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): rac2,rac1,rac3

[grid@rac1 ~]$ srvctl config vip -n rac3
VIP exists: /rac3-vip/192.168.133.197/192.168.133.0/255.255.255.0/ens33, hosting node rac3

[oracle@rac1 ~]$ sqlplus / as sysdba
SQL> select instance_name,status from gv$instance;

INSTANCE_NAME    STATUS
---------------- ------------
orcl1            OPEN
orcl3            OPEN
orcl2            OPEN

12、删除rac3节点
12.1、删除节点实例
Step 1.在任何一个保留的节点上执行如下命令清除实例
[oracle@rac1 ~]$ dbca -silent -deleteInstance -nodeList "rac3" -gdbName "orcl" -instanceName "orcl3" -sysDBAUserName "sys" -sysDBAPassword oracle_4U
Deleting instance
1% complete
2% complete
6% complete
13% complete
20% complete
26% complete
33% complete
40% complete
46% complete
53% complete
60% complete
66% complete
Completing instance management.
100% complete
Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/orcl.log" for further details.
[oracle@rac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rac1
Instance orcl2 is running on node rac2

12.2、卸载Database Software
step 1.在任何一个节点上执行如下命令停止和禁用监听器
[grid@rac1 ~]$ srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): rac2,rac1,rac3
[grid@rac1 ~]$ srvctl stop listener -n rac3
[grid@rac1 ~]$ srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): rac2,rac1
[grid@rac1 ~]$ srvctl disable listener -n rac3

step 2.在要删除的节点上执行如下命令更新Inventory
[oracle@rac3 ~]$ cd $ORACLE_HOME/oui/bin
[oracle@rac3 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac3}" -local
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3696 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

step 3.删除RAC Database Home有两种分类：
1) Share Oracle RAC Database Home
oracle@rac1$ cd /u01/app/oracle/product/11.2.0/dbhome_1/oui/bin
oracle@rac3 bin$ ./runInstaller -detachHome ORACLE_HOME=$ORACLE_HOME

2)Non Shared Oracle RAC Database Home
[oracle@rac3 bin]$ cd $ORACLE_HOME/deinstall/
[oracle@rac3 deinstall]$ ./deinstall -local
第一次deinstall会报错，执行如下操作解决：
[oracle@rac3 deinstall]$ /tmp/deinstall2023-12-09_03-56-39PM/sshUserSetup.sh -hosts "rac3 " -user oracle
[oracle@rac3 deinstall]$ ./deinstall -local
......
####################### CLEAN OPERATION SUMMARY #######################
Cleaning the config for CCR
As CCR is not configured, so skipping the cleaning of CCR configuration
CCR clean is finished
Successfully detached Oracle home '/u01/app/oracle/product/11.2.0/db' from the central inventory on the local node.
Successfully deleted directory '/u01/app/oracle/product/11.2.0/db' on the local node.
Failed to delete directory '/u01/app/oracle' on the local node. 说明：该告警忽略.
Oracle Universal Installer cleanup completed with errors.

Oracle deinstall tool successfully cleaned up temporary directories.
#######################################################################

############# ORACLE DEINSTALL & DECONFIG TOOL END #############

step 4.在保留的所有节点上执行如下命令更新Inventory
[oracle@rac1 ~]$ cd /u01/app/oracle/product/11.2.0/db/oui/bin/
[oracle@rac1 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac1}"
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3088 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

[oracle@rac2 ~]$ cd /u01/app/oracle/product/11.2.0/db/oui/bin/
[oracle@rac2 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac2}"
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3378 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

12.3、卸载节点Clusterware
Step 1.确定所有节点grid用户的ORACLE_HOME配置正确
[grid@rac1 ~]$ grep ORACLE_HOME .bash_profile | head -1
export ORACLE_HOME=/u01/app/11.2.0/grid
[grid@rac2 ~]$ grep ORACLE_HOME .bash_profile | head -1
export ORACLE_HOME=/u01/app/11.2.0/grid
[grid@rac3 ~]$ grep ORACLE_HOME .bash_profile | head -1
export ORACLE_HOME=/u01/app/11.2.0/grid

step 2.查看是否是Pinned状态
[grid@rac1 ~]$ olsnodes -s -t
rac1    Active Unpinned
rac2    Active Unpinned
rac3    Active Unpinned

需要每个节点都显示Unpinned状态，如果返回结果是pinned状态，执行
$ crsctl unpin css -n node_name

step 3.在要删除的节点上以root用户执行如下命令
[root@rac3 install]# /u01/app/11.2.0/grid/perl/bin/perl /u01/app/11.2.0/grid/crs/install/rootcrs.pl -deconfig -force

说明：原本应该采用如下命令，但11g存在bug 18650453.
[root@rac3 ~]# cd /u01/app/11.2.0/grid/crs/install
[root@rac3 install]# ./rootcrs.pl -deconfig -force

检查集群情况：
[grid@rac1 ~]$ crs_stat -t
Name           Type           Target    State     Host
------------------------------------------------------------
ora.DATA.dg    ora....up.type ONLINE    ONLINE    rac1
ora....ER.lsnr ora....er.type ONLINE    ONLINE    rac1
ora....N1.lsnr ora....er.type ONLINE    ONLINE    rac2
ora.OCR.dg     ora....up.type ONLINE    ONLINE    rac1
ora.asm        ora.asm.type   ONLINE    ONLINE    rac1
ora.cvu        ora.cvu.type   ONLINE   ONLINE    rac1
ora.gsd        ora.gsd.type   OFFLINE   OFFLINE
ora....network ora....rk.type ONLINE    ONLINE    rac1
ora.oc4j       ora.oc4j.type ONLINE    ONLINE    rac1
ora.ons        ora.ons.type   ONLINE    ONLINE    rac1
ora.orcl.db    ora....se.type ONLINE    ONLINE    rac1
ora....SM1.asm application    ONLINE    ONLINE    rac1
ora....C1.lsnr application    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    OFFLINE   OFFLINE
ora.rac1.ons   application    ONLINE    ONLINE    rac1
ora.rac1.vip   ora....t1.type ONLINE    ONLINE    rac1
ora....SM2.asm application    ONLINE    ONLINE    rac2
ora....C2.lsnr application    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    OFFLINE   OFFLINE
ora.rac2.ons   application    ONLINE    ONLINE    rac2
ora.rac2.vip   ora....t1.type ONLINE    ONLINE    rac2
ora.scan1.vip ora....ip.type ONLINE    ONLINE    rac2

step 4.在任何一个保留的节点以root用户执行如下命令删除节点
[root@rac1 ~]# cd /u01/app/11.2.0/grid/bin
[root@rac1 bin]# ./crsctl delete node -n rac3
CRS-4661: Node rac3 successfully deleted.

step 5.在两个保留节点以grid用户执行如下命令更新保留节点的Inventory
[grid@rac1 ~]$ cd /u01/app/11.2.0/grid/oui/bin
[grid@rac1 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac1}" CRS=TRUE -silent -local
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3137 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

[grid@rac2 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac2}" CRS=TRUE -silent -local
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3372 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

step 6.在要删除的节点以grid用户执行如下命令卸载Clusterware软件
1) Shared Oracle RAC Grid Home
grid@rac1$ cd /u01/app/11.2.0/grid/oui/bin/
grid@rac1 bin$ ./runInstaller -detachHome ORACLE_HOME=$ORACLE_HOME -silent -local

2) Non Shared Oracle RAC Grid Home
[grid@rac3 ~]$ cd /u01/app/11.2.0/grid/deinstall
[grid@rac3 deinstall]$ ./deinstall -local
--第一次执行deinstall会报错，执行如下命令解决.
[grid@rac3 deinstall]$ /tmp/deinstall2023-12-09_05-10-29PM/sshUserSetup.sh -hosts "rac3 " -user grid
[grid@rac3 deinstall]$ ./deinstall -local
--以上命令一路回车，期间会弹出执行以下命令
[root@rac3 tmp]# /tmp/deinstall2023-12-09_05-12-46PM/perl/bin/perl -I/tmp/deinstall2023-12-09_05-12-46PM/perl/lib -I/tmp/deinstall2023-12-09_05-12-46PM/crs/install /tmp/deinstall2023-12-09_05-12-46PM/crs/install/rootcrs.pl -force -deconfig -paramfile "/tmp/deinstall2023-12-09_05-12-46PM/response/deinstall_Ora11g_gridinfrahome1.rsp"

执行完成之后，清理多余文件.
[root@rac3 ~]# rm -rf /etc/oraInst.loc
[root@rac3 ~]# rm -rf /opt/ORCLfmap
[root@rac3 ~]# rm -rf /etc/oratab

step 7.在保留节点以grid用户执行如下命令更新保留节点的Inventory
[grid@rac1 ~]$ cd /u01/app/11.2.0/grid/oui/bin
[grid@rac1 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac1}" CRS=TRUE -silent -local
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3137 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

[grid@rac2 bin]$ ./runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME "CLUSTER_NODES={rac2}" CRS=TRUE -silent -local
Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 3372 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
'UpdateNodeList' was successful.

step 8.在任何一个保留节点以grid用户执行如下命令验证成功删除与否
grid@rac1 bin$ cluvfy stage -post nodedel -n rac3 -verbose

12.4、后续操作
在任何一个保留节点中重启CRS.
[root@rac1 ~]# cd /u01/app/11.2.0/grid/bin
[root@rac1 bin]# ./crsctl stop crs
[root@rac1 bin]# ./crsctl start crs

[grid@rac1 ~]$ srvctl status database -d orcl
Instance orcl1 is running on node rac1
Instance orcl2 is running on node rac2
[grid@rac1 ~]$ srvctl status listener
Listener LISTENER is enabled

Listener LISTENER is running on node(s): rac2,rac1

rac新增节点 rac删除节点

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添加rac集群新节点以及删除rac节点实验

1、架构介绍

2、新节点前期准备

2.1、系统版本

2.2、移除虚拟嵌套

3、网络配置

3.1、添加网卡

3.2、修改hosts文件

3.3、配置Yum源

3.4、安装依赖包

3.5、关闭防火墙

3.6、禁用selinux

3.7、关闭ntp和chrony服务

3.8、关闭透明大页和numa

3.9、avahi-daemon配置

3.10、修改/etc/sysctl.conf文件

3.11、修改用户限制

3.12、修改/etc/pam.d/login文件

3.13、创建用户、用户组、目录

3.14、用户环境变量

4、共享存储

5、multipath

5.1、安装multipath

5.2、查看共享盘的scsi_id

5.3、配置multipath

5.4、激活multipath多路径

6、asmlib

6.1、文件上传

6.2、安装asmlib

6.3、配置asmlib

6.4、创建asm磁盘

6.5、验证磁盘

7、互信

7.1、配置grid ssh用户等效性

7.2、配置oracle ssh用户等效性

8、CVU工具检查

9、新节点添加Clusterware

9.1、添加Clusterware

9.2、验证新节点添加情况

10、新节点添加RAC Database Software

10.1、添加数据库软件

10.2、CVU工具检查

11、新节点添加数据库实例

11.1、新节点添加实例

11.2、集群检查

12、删除rac3节点

12.1、删除节点实例

12.2、卸载Database Software

12.3、卸载节点Clusterware

12.4、后续操作

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