云贝教育 | 【技术文章】Oracle 19c RAC修改网络

云贝教育 2024-02-01

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原文链接：【Oracle 19c】Oracle 19c RAC修改网络 - 课程体系 - 云贝教育 (yunbee.net)

变更目标

生产环境做变更，对核心文件需要进行备份

gpnp备份：

两个节点都要操作

<GRID>

cd $ORACLE_HOMEgpnp/profiles/peer/
cp profile.xml profile.xml.bak复制

修改任意IP前，需对/etc/hosts文件进行修改，不再赘述。

一、修改puclib ip

1.1 查看当前配置

<GRID>

[grid@racdb01 ~]$ oifcfg getif
ens33  192.168.2.0  global  public
ens36  10.10.10.0  global  cluster_interconnect,asm复制

1.2 查看当前网卡

ens38是我们新指定的PUBLIC网卡

一节点

ens38: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.160  netmask 255.255.255.0  broadcast 192.168.2.255复制

二节点

ens38: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.162  netmask 255.255.255.0  broadcast 192.168.2.255复制

1.3 删除原公网配置

<GRID>

oifcfg delif -global ens33/192.168.2.0复制

1.4 添加公网配置

示例 oifcfg setif -global <私有网卡名>/<新私有网段>:cluster_interconnect,asm

oifcfg setif -global ens38/192.168.2.0:public复制

1.5 检查

[grid@racdb01 ~]$ oifcfg getif
ens36  10.10.10.0  global  cluster_interconnect,asm
ens38  192.168.2.0  global  public复制

二、变更VIP

2.1 查看当前VIP配置

<GRID>

[grid@racdb02 ~]$ srvctl config nodeapps -a
Network 1 exists
Subnet IPv4: 192.168.2.0/255.255.255.0/ens33, static
Subnet IPv6: 
Ping Targets: 
Network is enabled
Network is individually enabled on nodes: 
Network is individually disabled on nodes: 
VIP exists: network number 1, hosting node racdb01
VIP Name: racdb01-vip
VIP IPv4 Address: 192.168.2.61
VIP IPv6 Address: 
VIP is enabled.
VIP is individually enabled on nodes: 
VIP is individually disabled on nodes: 
VIP exists: network number 1, hosting node racdb02
VIP Name: racdb02-vip
VIP IPv4 Address: 192.168.2.63
VIP IPv6 Address: 
VIP is enabled.
VIP is individually enabled on nodes: 
VIP is individually disabled on nodes: 复制

2.2 查看当前监听地址

<GRID>

[grid@racdb02 ~]$ lsnrctl  status
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.62)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.63)(PORT=1521)))
Services Summary...复制

2.3 关闭两节点上的VIP及监听

<GRID>

1）关闭两节点vip及监听
srvctl stop listener -n racdb01
srvctl stop vip -n racdb0
srvctl stop listener -n racdb02
srvctl stop vip -n racdb02
或
srvctl stop vip -n racdb01 -f
srvctl stop vip -n racdb02 -f复制

停掉vip之后，两个节点上的vip地址消失。

以二节点为例

[grid@racdb02 ~]$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.62  netmask 255.255.255.0  broadcast 192.168.2.255
        inet6 fe80::7abc:4983:ac14:e0dd  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:12:08:eb  txqueuelen 1000  (Ethernet)
        RX packets 1788  bytes 213310 (208.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1265  bytes 204969 (200.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens36: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.10.10.38  netmask 255.255.255.0  broadcast 10.10.10.255复制

正常情况下

[oracle@racdb01 dbs]$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.60  netmask 255.255.255.0  broadcast 192.168.2.255
        inet6 fe80::a22b:7bcb:ba5b:566c  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:a5:2b:c7  txqueuelen 1000  (Ethernet)
        RX packets 1197951  bytes 1357345599 (1.2 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 35190  bytes 7038721 (6.7 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.61  netmask 255.255.255.0  broadcast 192.168.2.255
        ether 00:0c:29:a5:2b:c7  txqueuelen 1000  (Ethernet)复制

2.4 根据VIP配置信息，修改VIP

<root>
格式： srvctl modify nodeapps -n <hostname1> -A <hostname1-vip>/255.255.255.0/<网卡>

cd /u01/app/19.3.0/grid/
bin/srvctl modify nodeapps -n racdb01 -A 192.168.2.161/255.255.255.0/ens33
bin/srvctl modify nodeapps -n racdb02 -A 192.168.2.163/255.255.255.0/ens33复制

2.5 修改/etc/hosts

两个节点改成以下信息

############Virtual IP############
192.168.2.161   racdb01-vip
192.168.2.163   racdb02-vip复制

2.6 验证VIP

srvctl config nodeapps -a

srvctl config vip -n racdb01
srvctl config vip -n racdb02

ip a复制

查看监听

lsnrctl status复制

三、变更SCAN-IP

3.1 关闭SCAN服务及监听

关闭scan监听
srvctl stop scan_listener
srvctl stop scan

查看
srvctl status scan_listener复制

3.2 修改/etc/hosts

两个节点均要操作

############Scan IP###############
192.168.2.164   racdb-scan复制

3.3 修改SCAN IP

<root>

格式srvctl modify scan -n <scan-IP名>

srvctl modify scan -n racdb-scan复制

3.4 启动scan服务及监听

srvctl start scan_listener
srvctl start scan复制

3.5 检查

检查监听

[grid@racdb02 ~]$ lsnrctl  status listener_scan

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.164)(PORT=1521)))
Service "ORCL" has 1 instance(s).
  Instance "YBDBINST1", status READY, has 1 handler(s) for this service...
Service "yunnbeedXDB" has 1 instance(s).
  Instance "YBDBINST1", status READY, has 1 handler(s) for this service...复制

检查服务

[grid@racdb02 ~]$ srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node racdb02复制

四、私网变更

变更类型：

配置双私网
变更当前私网IP

4.1 添加私网网卡

 oifcfg getif 

oifcfg setif -global ens38/10.10.20.0:cluster_interconnect

 oifcfg getif复制

实验1：关闭节点2上双私网中的一个，观察集群日志

4.2 变更私网

1、添加
oifcfg setif -global ens38/10.10.20.0:cluster_interconnect,asm

2、查看
[grid@racdb01 ~]$ oifcfg getif
ens36  10.10.10.0  global  cluster_interconnect,asm
ens39  192.168.2.0  global  public
ens38  10.10.20.0  global  cluster_interconnect,asm

3、加入一个新的 ASMLISTENE
srvctl add listener -asmlistener -l ASMNEWLSNR_ASM -subnet 10.10.20.0

4、查看当前的ASMLISNTER
[grid@racdb02 ~]$ srvctl status asmnetwork
ASM network is running on racdb02,racdb01

[grid@racdb01 ~]$ srvctl config asmnetwork
ASM network 1 exists
Subnet IPv4: 10.10.10.0//
Subnet IPv6: 
Network is enabled
Network is individually enabled on nodes: 
Network is individually disabled on nodes: 

[grid@racdb01 ~]$ srvctl config listener -asmlistener
Name: ASMNET1LSNR_ASM
Type: ASM Listener
Owner: grid
Subnet: 10.10.10.0
Home: <CRS home>
End points: TCP:1525
Listener is enabled.
Listener is individually enabled on nodes: 
Listener is individually disabled on nodes:



5、删除现有的ASMLISTENER
[grid@racdb01 ~]$ srvctl update listener -listener ASMNET1LSNR_ASM -asm -remove -force  

lsnrctl stop ASMNET1LSNR_ASM 

6、查看
[grid@racdb01 ~]$ srvctl config  listener -asmlistener
Name: ASMNEWLSNR_ASM
Type: ASM Listener
Owner: grid
Subnet: 10.10.20.0
Home: <CRS home>
End points: TCP:1526
Listener is enabled.
Listener is individually enabled on nodes: 
Listener is individually disabled on nodes: 复制

4.3 删除私网

oifcfg delif -global ens38/10.10.20.0复制

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