virbr0 인터페이스 삭제

VM에 오라클 RAC 설치 테스트를 진행하면서 virbr0 인터페이스가 왠지모르게 생성되는 경우가 있습니다..ㅜㅜ​

grid user로 cluster 설치 전에 runcluvfy.sh라는 스크립트를 수행해서 requirements settings에 대해 확인할 때 요 인터페이스가 걸리는게 거슬려서 제거하는 방법을 포스팅하려합니다~

 

--runcluvfy.sh를 돌린 내용 중 virbr0 부분
Verifying Node Connectivity ...FAILED
PRVG-1172 : The IP address "xxx.xxx.xxx.x" is on multiple interfaces "virbr0"
on nodes "rac1,rac2"

rac1: PRVG-11067 : TCP connectivity from node "rac1": "xxx.xxx.xxx.x" to node
      "rac1": "xxx.xxx.xxx.x" failed.
      PRVG-11095 : The TCP system call "connect" failed with error "111" while
      executing exectask on node "rac1"
      Connection refused
rac1: PRVG-11067 : TCP connectivity from node "1": "xxx.xxx.xxx.x to node
      "rac2": "xxx.xxx.xxx.x" failed.
      PRVG-11095 : The TCP system call "connect" failed with error "111" while
      executing exectask on node "rac1"

virbr0 인터페이스 삭제

Step1. 서비스 확인 / 중지 / 비활성화

[root@rac1 ~]# systemctl status libvirtd.service
[0m libvirtd.service - Virtualization daemon
   Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2021-07-23 11:23:02 KST; 1 weeks 6 days ago
     Docs: man:libvirtd(8)
           https://libvirt.org
...

[root@rac1 ~]# systemctl stop libvirtd.service

[root@rac1 ~]# systemctl status libvirtd.service
libvirtd.service - Virtualization daemon
   Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Thu 2021-08-05 13:26:47 KST; 1s ago
     Docs: man:libvirtd(8)
           https://libvirt.org
...

[root@rac1 ~]# systemctl disable libvirtd.service
Removed symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlogd.socket.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket.

Step2. 현재 인터페이스 확인

[root@rac1 ~]# brctl show
bridge name     bridge id               STP enabled     interfaces
virbr0          8000.525400232ed4       yes             virbr0-nic

 

Step3. 인터페이스 다운

[root@rac1 ~]# ip link set virbr0 down

Step4. 인터페이스 삭제

[root@rac1 ~]# brctl delbr virbr0

Step5. 현재 인터페이스 확인(삭제 잘 되었는지 확인)

[root@rac1 ~]#  brctl show
bridge name     bridge id               STP enabled     interfaces