srvctl relocate scan用法：
[grid@rac1 ~]$ srvctl relocate scan -h
将 SCAN VIP 从集群的一个节点临时重新定位到另一个节点。
用法: srvctl relocate scan -i <ordinal_number> [-n <node_name>]
-i <scan_ordinal_number> IP 地址的序数
-n <node_name> SCAN VIP 节点名
-h 输出用法
一、背景
1）节点一ip配置
#rac1
192.168.162.10 rac1
192.168.162.11 rac1-vip
10.10.10.11 rac1-priv
#rac2
192.168.162.12 rac2
192.168.162.13 rac2-vip
10.10.10.12 rac2-priv
#scan-ip
192.168.162.14 scan-cluster
2）节点二ip配置
#rac1
192.168.162.10 rac1
192.168.162.11 rac1-vip
10.10.10.11 rac1-priv
#rac2
192.168.162.12 rac2
192.168.162.13 rac2-vip
10.10.10.12 rac2-priv
#scan-ip
192.168.162.14 scan-cluster
二、手动切换scan ip到集群其他节点：
1）查看节点一，节点二scan ip切换前ip以及listener_scan1状态
节点一：
[grid@rac1 ~]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:23:a9:13 brd ff:ff:ff:ff:ff:ff
inet 192.168.162.10/24 brd 192.168.162.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.162.14/24 brd 192.168.162.255 scope global secondary eth0:1
valid_lft forever preferred_lft forever
inet 192.168.162.11/24 brd 192.168.162.255 scope global secondary eth0:3
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe23:a913/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:21:3a:ae brd ff:ff:ff:ff:ff:ff
inet 10.10.10.11/24 brd 10.10.10.255 scope global eth1
valid_lft forever preferred_lft forever
inet 169.254.83.129/16 brd 169.254.255.255 scope global eth1:1
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe21:3aae/64 scope link
valid_lft forever preferred_lft forever
[grid@rac1 admin]$ lsnrctl status listener_scan1
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 14-AUG-2022 16:01:46
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
------------------------
Alias LISTENER_SCAN1
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 14-AUG-2022 16:01:04
Uptime 0 days 0 hr. 0 min. 41 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /u01/app/11.2.0/grid/log/diag/tnslsnr/rac1/listener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.162.14)(PORT=1521)))
Services Summary...
Service "racdb" has 2 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Instance "racdb2", status READY, has 1 handler(s) for this service...
Service "racdbXDB" has 2 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Instance "racdb2", status READY, has 1 handler(s) for this service...
The command completed successfully
节点二：
[grid@rac2 ~]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:39:52:22 brd ff:ff:ff:ff:ff:ff
inet 192.168.162.12/24 brd 192.168.162.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.162.13/24 brd 192.168.162.255 scope global secondary eth0:1
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe39:5222/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:2b:28:e0 brd ff:ff:ff:ff:ff:ff
inet 10.10.10.12/24 brd 10.10.10.255 scope global eth1
valid_lft forever preferred_lft forever
inet 169.254.211.144/16 brd 169.254.255.255 scope global eth1:1
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe2b:28e0/64 scope link
valid_lft forever preferred_lft forever
[grid@rac2 ~]$ lsnrctl status listener_scan1
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 14-AUG-2022 16:01:36
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 2: No such file or directory
2）手动切换scan ip
[grid@rac1 ~]$ srvctl relocate scan -i 1 -n rac2
3）查看节点一，节点二scan ip切换后ip以及listener_scan1状态
节点一：
[grid@rac1 ~]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:23:a9:13 brd ff:ff:ff:ff:ff:ff
inet 192.168.162.10/24 brd 192.168.162.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.162.11/24 brd 192.168.162.255 scope global secondary eth0:3
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe23:a913/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:21:3a:ae brd ff:ff:ff:ff:ff:ff
inet 10.10.10.11/24 brd 10.10.10.255 scope global eth1
valid_lft forever preferred_lft forever
inet 169.254.83.129/16 brd 169.254.255.255 scope global eth1:1
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe21:3aae/64 scope link
valid_lft forever preferred_lft forever
[grid@rac1 admin]$ lsnrctl status listener_scan1
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 14-AUG-2022 16:12:04
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 2: No such file or directory
节点二：
[grid@rac2 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:39:52:22 brd ff:ff:ff:ff:ff:ff
inet 192.168.162.12/24 brd 192.168.162.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.162.13/24 brd 192.168.162.255 scope global secondary eth0:1
valid_lft forever preferred_lft forever
inet 192.168.162.14/24 brd 192.168.162.255 scope global secondary eth0:2
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe39:5222/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:2b:28:e0 brd ff:ff:ff:ff:ff:ff
inet 10.10.10.12/24 brd 10.10.10.255 scope global eth1
valid_lft forever preferred_lft forever
inet 169.254.211.144/16 brd 169.254.255.255 scope global eth1:1
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe2b:28e0/64 scope link
valid_lft forever preferred_lft forever
[grid@rac2 ~]$ lsnrctl status listener_scan1
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 14-AUG-2022 16:11:54
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
------------------------
Alias LISTENER_SCAN1
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 14-AUG-2022 16:11:41
Uptime 0 days 0 hr. 0 min. 13 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /u01/app/11.2.0/grid/log/diag/tnslsnr/rac2/listener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.162.14)(PORT=1521)))
Services Summary...
Service "racdb" has 2 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Instance "racdb2", status READY, has 1 handler(s) for this service...
Service "racdbXDB" has 2 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Instance "racdb2", status READY, has 1 handler(s) for this service...
The command completed successfully
由上可见scan ip 192.168.162.14被成功切换到节点二。
