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Оба сервера, на которых запущено keepalived, становятся главными и имеют одинаковый виртуальный IP-адрес.

Оба сервера начали поддерживать активность, и сервер BACKUP немедленно перешел в состояние MASTER STATE. оба теперь стали МАСТЕРАМИ.

Оба узла отправляют рекламное сообщение VRRP.

на главном сервере:

[root@zhsq1 ~]# tcpdump -c 3 -i em1 host 224.0.0.18
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on em1, link-type EN10MB (Ethernet), capture size 65535 bytes
11:01:35.526355 IP zhsq1 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 153, authtype simple, intvl 1s, length 20
11:01:36.526497 IP zhsq1 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 153, authtype simple, intvl 1s, length 20
11:01:37.527561 IP zhsq1 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 153, authtype simple, intvl 1s, length 20

на резервном сервере:

[root@zhsq2 ~]# tcpdump -c 3 -i em1 host 224.0.0.18
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on em1, link-type EN10MB (Ethernet), capture size 65535 bytes
11:11:04.314996 IP zhsq2 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 102, authtype simple, intvl 1s, length 20
11:11:05.315111 IP zhsq2 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 102, authtype simple, intvl 1s, length 20
11:11:06.316175 IP zhsq2 > 224.0.0.18: VRRPv2, Advertisement, vrid 51, prio 102, authtype simple, intvl 1s, length 20

ниже - журнал главного сервера:

May 31 11:00:22 zhsq1 Keepalived[31475]: Starting Keepalived v1.2.7 (05/20,2013)
May 31 11:00:22 zhsq1 Keepalived[31476]: Starting Healthcheck child process, pid=31477
May 31 11:00:22 zhsq1 Keepalived[31476]: Starting VRRP child process, pid=31478
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Interface queue is empty
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: No such interface, em2
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Netlink reflector reports IP 10.0.7.60 added
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Netlink reflector reports IP fe80::92b1:1cff:fe4c:bea8 added
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Registering Kernel netlink reflector
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Registering Kernel netlink command channel
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Interface queue is empty
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: No such interface, em2
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Netlink reflector reports IP 10.0.7.60 added
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Netlink reflector reports IP fe80::92b1:1cff:fe4c:bea8 added
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Registering Kernel netlink reflector
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Registering Kernel netlink command channel
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Registering gratuitous ARP shared channel
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Opening file '/etc/keepalived/keepalived.conf'.
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Configuration is using : 4661 Bytes
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Opening file '/etc/keepalived/keepalived.conf'.
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Configuration is using : 63856 Bytes
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: Using LinkWatch kernel netlink reflector...
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: VRRP sockpool: [ifindex(2), proto(112), fd(11,12)]
May 31 11:00:22 zhsq1 Keepalived_healthcheckers[31477]: Using LinkWatch kernel netlink reflector...
May 31 11:00:22 zhsq1 Keepalived_vrrp[31478]: VRRP_Script(chk_http_port) succeeded
May 31 11:00:23 zhsq1 Keepalived_vrrp[31478]: VRRP_Instance(VI_1) Transition to MASTER STATE
May 31 11:00:24 zhsq1 Keepalived_vrrp[31478]: VRRP_Instance(VI_1) Entering MASTER STATE
May 31 11:00:24 zhsq1 Keepalived_vrrp[31478]: VRRP_Instance(VI_1) setting protocol VIPs.
May 31 11:00:24 zhsq1 Keepalived_vrrp[31478]: VRRP_Instance(VI_1) Sending gratuitous ARPs on em1 for 10.0.7.65
May 31 11:00:24 zhsq1 Keepalived_healthcheckers[31477]: Netlink reflector reports IP 10.0.7.65 added
May 31 11:00:29 zhsq1 Keepalived_vrrp[31478]: VRRP_Instance(VI_1) Sending gratuitous ARPs on em1 for 10.0.7.65

ниже журнал резервного сервера:

May 31 11:01:50 zhsq2 Keepalived[31250]: Starting Keepalived v1.2.7 (05/20,2013)
May 31 11:01:50 zhsq2 Keepalived[31251]: Starting Healthcheck child process, pid=31252
May 31 11:01:50 zhsq2 Keepalived[31251]: Starting VRRP child process, pid=31253
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Interface queue is empty
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: No such interface, em2
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Netlink reflector reports IP 10.0.7.61 added
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Netlink reflector reports IP fe80::92b1:1cff:fe4c:b8b7 added
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Registering Kernel netlink reflector
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Registering Kernel netlink command channel
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Interface queue is empty
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: No such interface, em2
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Netlink reflector reports IP 10.0.7.61 added
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Netlink reflector reports IP fe80::92b1:1cff:fe4c:b8b7 added
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Registering Kernel netlink reflector
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Registering Kernel netlink command channel
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Registering gratuitous ARP shared channel
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Opening file '/etc/keepalived/keepalived.conf'.
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Configuration is using : 4661 Bytes
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Opening file '/etc/keepalived/keepalived.conf'.
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Configuration is using : 63856 Bytes
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: Using LinkWatch kernel netlink reflector...
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: VRRP_Instance(VI_1) Entering BACKUP STATE
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: VRRP sockpool: [ifindex(2), proto(112), fd(11,12)]
May 31 11:01:50 zhsq2 Keepalived_healthcheckers[31252]: Using LinkWatch kernel netlink reflector...
May 31 11:01:50 zhsq2 Keepalived_vrrp[31253]: VRRP_Script(chk_http_port) succeeded
May 31 11:01:54 zhsq2 Keepalived_vrrp[31253]: VRRP_Instance(VI_1) Transition to MASTER STATE
May 31 11:01:55 zhsq2 Keepalived_vrrp[31253]: VRRP_Instance(VI_1) Entering MASTER STATE
May 31 11:01:55 zhsq2 Keepalived_vrrp[31253]: VRRP_Instance(VI_1) setting protocol VIPs.
May 31 11:01:55 zhsq2 Keepalived_vrrp[31253]: VRRP_Instance(VI_1) Sending gratuitous ARPs on em1 for 10.0.7.65
May 31 11:01:55 zhsq2 Keepalived_healthcheckers[31252]: Netlink reflector reports IP 10.0.7.65 added
May 31 11:02:00 zhsq2 Keepalived_vrrp[31253]: VRRP_Instance(VI_1) Sending gratuitous ARPs on em1 for 10.0.7.65

Конфигурация keepalived главного сервера приведена ниже:

vrrp_script chk_http_port {         
        script "/opt/nginx/nginx_pid.sh"
        interval 2 
        weight 2  
}

vrrp_instance VI_1 {  
        state MASTER
        #nopreempt 
        interface em1
        virtual_router_id 51 
        priority 151
        mcast_src_ip 10.0.7.60 
        track_interface {
                em1
        }
        authentication {  
                auth_type PASS 
                auth_pass 1111 
        }  
        track_script {  
                chk_http_port 
        }  
        virtual_ipaddress {                  
                10.0.7.65 dev em1
        }  
}

Конфигурация сервера резервного копирования keepalived приведена ниже:

vrrp_script chk_http_port {
        script "/opt/nginx/nginx_pid.sh"
        interval 2
        weight 2
}

vrrp_instance VI_1 {
        state BACKUP
        interface em1
        virtual_router_id 51
        priority 100
        mcast_src_ip 10.0.7.61
        track_interface {
                em1
        }
        authentication {
                auth_type PASS
                auth_pass 1111
        }
        track_script {
                chk_http_port
        }
        virtual_ipaddress {
                10.0.7.65 dev em1
        }
}

файл chk_http_port находится ниже:

NGINX_PROCESS=`ps -C nginx --no-header | wc -l`

if [ $NGINX_PROCESS -eq 0 ]; then

        /usr/local/nginx/sbin/nginx

        sleep 3

        if [ `ps -C nginx --no-header | wc -l` -eq 0 ]; then

                killall keepalived 

        fi  

fi

Пожалуйста, помогите мне.

Большое спасибо.

Пакеты не проходят между машинами по интерфейсу em1 (вызывая сценарий разделения мозга, поскольку Майк заявляет).

проверьте свой брандмауэр, чтобы убедиться, что пакеты не перехватываются
проверьте свою сеть, чтобы убедиться, что em1 - это одна и та же сеть на обеих машинах

Вот пример того, как выглядит один из пакетов:

Frame 2: 54 bytes on wire (432 bits), 54 bytes captured (432 bits)
    Arrival Time: Jun  1, 2013 03:39:50.709520000 UTC
    Epoch Time: 1370057990.709520000 seconds
    [Time delta from previous captured frame: 0.000970000 seconds]
    [Time delta from previous displayed frame: 0.000970000 seconds]
    [Time since reference or first frame: 0.000970000 seconds]
    Frame Number: 2
    Frame Length: 54 bytes (432 bits)
    Capture Length: 54 bytes (432 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:vrrp]
Ethernet II, Src: 00:25:90:83:b0:07 (00:25:90:83:b0:07), Dst: 01:00:5e:00:00:12 (01:00:5e:00:00:12)
    Destination: 01:00:5e:00:00:12 (01:00:5e:00:00:12)
        Address: 01:00:5e:00:00:12 (01:00:5e:00:00:12)
        .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
    Source: 00:25:90:83:b0:07 (00:25:90:83:b0:07)
        Address: 00:25:90:83:b0:07 (00:25:90:83:b0:07)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.0.10.11 (10.0.10.11), Dst: 224.0.0.18 (224.0.0.18)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 40
    Identification: 0x8711 (34577)
    Flags: 0x00
        0... .... = Reserved bit: Not set
        .0.. .... = Don't fragment: Not set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 255
    Protocol: VRRP (112)
    Header checksum: 0x4037 [correct]
        [Good: True]
        [Bad: False]
    Source: 10.0.10.11 (10.0.10.11)
    Destination: 224.0.0.18 (224.0.0.18)
Virtual Router Redundancy Protocol
    Version 2, Packet type 1 (Advertisement)
        0010 .... = VRRP protocol version: 2
        .... 0001 = VRRP packet type: Advertisement (1)
    Virtual Rtr ID: 254
    Priority: 151 (Non-default backup priority)
    Addr Count: 1
    Auth Type: No Authentication (0)
    Adver Int: 1
    Checksum: 0x3c01 [correct]
    IP Address: 10.0.0.254 (10.0.0.254)

В моем случае мне пришлось разрешить многоадресный трафик через брандмауэр на 224.0.0.18, для ufw:

ufw allow from 224.0.0.18
ufw allow to 224.0.0.18

это помог мне.

Я просто пришел сюда в поисках помощи с той же проблемой, но ни один из других ответов не помог. Однако я обнаружил свою проблему, поэтому оставлю ее здесь для будущих поисковиков.

Сценарий, в котором вы работаете, «разделенный мозг», как они его называют, вызван тем же, что и в другом ответе: связь между двумя keepalived, в частности, многоадресные запросы VRRP, не работают.

Для меня реальная проблема заключалась в том, что я тестировал виртуальные машины, настроенные libvirt с сетью macvtap, которая по умолчанию блокирует входящие многоадресные запросы.

Для меня исправление заключалось в том, чтобы выполнить команду «virsh net-edit mymacvtapnetwork», а затем изменить первую строку, <network>, чтобы <network trustGuestRxFilters='yes'>

Дополнительные сведения о настройке trustGuestRxFilters см. По ссылкам:

https://superuser.com/questions/944678/how-to-configure-macvtap-to-let-it-pass-multicast-packet- правильно

https://bugzilla.redhat.com/show_bug.cgi?id=1035253#c15

Я также смог увидеть это, как и OP, запустив tcpdump host 224.0.0.18 и увидел, что запрос VRRP отправляется с каждого сервера, но не получен другим.

Проблема решена.

Проблема была в настройке переключателя. Когда режим многоадресного фильтра - это фильтрация всего, проблема возникла. Keepalived работает нормально. когда режим многоадресного фильтра является прямым.

Спасибо за помощь.

В моем случае проблема была в SELINUX, я удалил ее с помощью команды tcpdump через интерфейс, на котором был настроен VIP. После прошивки iptables проблема была решена.