Rocky Linux 9.2部署OpenStack时br-mgmt网桥无法启动问题

OpenStack网桥创建遇到的问题 #

我正依据OpenStack-Ansible官方文档在Rocky Linux 9.2上部署OpenStack。因使用虚拟机进行部署测试，虚拟机接入的外部网络已加入VLAN，因此只需在各节点主机内创建网桥设备（或多个），并通过bridge-slave将该网桥设备与可访问互联网的网卡（我的环境中为ens160）绑定。

我执行了以下命令：

nmcli c add type bridge autoconnect yes ifname br-mgmt con-name br-mgmt

执行nmcli c查看状态，输出如下：

NAME     UUID                                  TYPE      DEVICE  
br-mgmt  2b4c8058-f6ab-471f-afdb-e110cfdcc550  bridge    br-mgmt 
ens160   ce68d146-f671-3eec-b26f-de540af181a1  ethernet  ens160  
lo       5d8a90ae-138c-4544-a415-dd0e3c23050f  loopback  lo

这表明网桥创建成功。随后执行以下命令创建网桥从设备：

nmcli c add type bridge-slave ifname ens160 master br-mgmt

再次执行nmcli c，输出如下：

NAME                 UUID                                  TYPE      DEVICE
br-mgmt              2b4c8058-f6ab-471f-afdb-e110cfdcc550  bridge    br-mgmt
ens160               ce68d146-f671-3eec-b26f-de540af181a1  ethernet  ens160
lo                   5d8a90ae-138c-4544-a415-dd0e3c23050f  loopback  lo
bridge-slave-ens160  5f3fc816-406c-4cc0-8d6d-1d68841a6d55  ethernet  --

执行命令nmcli c up br-mgmt，输出如下：

Connection successfully activated (master waiting for slaves) (D-Bus active path:  /org/freedesktop/NetworkManager/ActiveConnection/22)

随后使用ip addr命令查看网络状态：

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:62:bb:02 brd ff:ff:ff:ff:ff:ff
    altname enp3s0
    inet 192.168.75.141/24 brd 192.168.75.255 scope global dynamic noprefixroute ens160
       valid_lft 1006sec preferred_lft 1006sec
    inet6 fe80::20c:29ff:fe62:bb02/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
16: br-mgmt: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether c2:51:e9:6f:47:f4 brd ff:ff:ff:ff:ff:ff
    inet 192.168.48.1/24 brd 192.168.48.255 scope global noprefixroute br-mgmt
       valid_lft forever preferred_lft forever

这表明网桥设备br-mgmt仍处于DOWN状态，无法启动，即使使用nmcli c up命令尝试启动也无效。

查看配置文件/etc/NetworkManager/system-connections/br-mgmt.nmconnection：

connection.id:                          br-mgmt
connection.id:                          br-mgmt
connection.uuid:                        2b4c8058-f6ab-471f-afdb-e110cfdcc550
connection.stable-id:                   --
connection.type:                        bridge
connection.interface-name:              br-mgmt
connection.autoconnect:                 yes
connection.autoconnect-priority:        0
connection.autoconnect-retries:         -1 (default)
connection.multi-connect:               0 (default)
connection.auth-retries:                -1
connection.timestamp:                   1685948786
connection.read-only:                   no
connection.permissions:                 --
connection.zone:                        --
connection.master:                      --
connection.slave-type:                  --
connection.autoconnect-slaves:          -1 (default)
connection.secondaries:                 --
connection.gateway-ping-timeout:        0
connection.metered:                     unknown
connection.lldp:                        default
connection.mdns:                        -1 (default)
connection.llmnr:                       -1 (default)
connection.dns-over-tls:                -1 (default)
connection.mptcp-flags:                 0x0 (default)
connection.wait-device-timeout:         -1
connection.wait-activation-delay:       -1
802-3-ethernet.port:                    --
802-3-ethernet.speed:                   0
802-3-ethernet.duplex:                  --
802-3-ethernet.auto-negotiate:          no
802-3-ethernet.mac-address:             --
802-3-ethernet.cloned-mac-address:      --
802-3-ethernet.generate-mac-address-mask:--
802-3-ethernet.mac-address-blacklist:   --
802-3-ethernet.mtu:                     auto
802-3-ethernet.s390-subchannels:        --
802-3-ethernet.s390-nettype:            --
802-3-ethernet.s390-options:            --
802-3-ethernet.wake-on-lan:             default
802-3-ethernet.wake-on-lan-password:    --
802-3-ethernet.accept-all-mac-addresses:-1 (default)
ipv4.method:                            manual
ipv4.dns:                               223.5.5.5
ipv4.dns-search:                        --
ipv4.dns-options:                       --
ipv4.dns-priority:                      0
ipv4.addresses:                         192.168.48.1/24
ipv4.gateway:                           192.168.48.1
ipv4.routes:                            --
ipv4.route-metric:                      -1
ipv4.route-table:                       0 (unspec)
ipv4.routing-rules:                     --
ipv4.replace-local-rule:                -1 (default)
ipv4.ignore-auto-routes:                no
ipv4.ignore-auto-dns:                   no
ipv4.dhcp-client-id:                    --
ipv4.dhcp-iaid:                         --
ipv4.dhcp-timeout:                      0 (default)
ipv4.dhcp-send-hostname:                yes
ipv4.dhcp-hostname:                     --
ipv4.dhcp-fqdn:                         --
ipv4.dhcp-hostname-flags:               0x0 (none)
ipv4.never-default:                     no
ipv4.may-fail:                          yes
ipv4.required-timeout:                  -1 (default)
ipv4.dad-timeout:                       -1 (default)
ipv4.dhcp-vendor-class-identifier:      --
ipv4.link-local:                        0 (default)
ipv4.dhcp-reject-servers:               --
ipv4.auto-route-ext-gw:                 -1 (default)
ipv6.method:                            auto
ipv6.dns:                               --
ipv6.dns-search:                        --
ipv6.dns-options:                       --
ipv6.dns-priority:                      0
ipv6.addresses:                         --
ipv6.gateway:                           --
ipv6.routes:                            --
ipv6.route-metric:                      -1
ipv6.route-table:                       0 (unspec)
ipv6.routing-rules:                     --
ipv6.replace-local-rule:                -1 (default)
ipv6.ignore-auto-routes:                no
ipv6.ignore-auto-dns:                   no
ipv6.never-default:                     no
ipv6.may-fail:                          yes
ipv6.required-timeout:                  -1 (default)
ipv6.ip6-privacy:                       -1 (unknown)
ipv6.addr-gen-mode:                     default
ipv6.ra-timeout:                        0 (default)
ipv6.mtu:                               auto
ipv6.dhcp-duid:                         --
ipv6.dhcp-iaid:                         --
ipv6.dhcp-timeout:                      0 (default)
ipv6.dhcp-send-hostname:                yes
ipv6.dhcp-hostname:                     --
ipv6.dhcp-hostname-flags:               0x0 (none)
ipv6.auto-route-ext-gw:                 -1 (default)
ipv6.token:                             --
bridge.mac-address:                     --
bridge.stp:                             yes
bridge.priority:                        32768
bridge.forward-delay:                   15
bridge.hello-time:                      2
bridge.max-age:                         20
bridge.ageing-time:                     300
bridge.group-forward-mask:              0
bridge.multicast-snooping:              yes
bridge.vlan-filtering:                  no
bridge.vlan-default-pvid:               1
bridge.vlans:                           --
proxy.method:                           none
proxy.browser-only:                     no
proxy.pac-url:                          --
proxy.pac-script:                       --
GENERAL.NAME:                           br-mgmt
GENERAL.UUID:                           2b4c8058-f6ab-471f-afdb-e110cfdcc550
GENERAL.DEVICES:                        br-mgmt
GENERAL.IP-IFACE:                       br-mgmt
GENERAL.STATE:                          activated
GENERAL.DEFAULT:                        no
GENERAL.DEFAULT6:                       no
GENERAL.SPEC-OBJECT:                    --
GENERAL.VPN:                            no
GENERAL.DBUS-PATH:                      /org/freedesktop/NetworkManager/ActiveConnection/22
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/Settings/14
GENERAL.ZONE:                           --
GENERAL.MASTER-PATH:                    --
IP4.ADDRESS[1]:                         192.168.48.1/24
IP4.GATEWAY:                            192.168.48.1
IP4.ROUTE[1]:                           dst = 192.168.48.0/24, nh = 0.0.0.0, mt = 425
IP4.ROUTE[2]:                           dst = 0.0.0.0/0, nh = 192.168.48.1, mt = 425
IP4.DNS[1]:                             223.5.5.5
IP6.GATEWAY:                            --

内容的提问来源于stack exchange，提问作者Glowberry