keepalived 无法启动

keepalived 无法启动

我已经编译并配置好了keepalived,但它仍然无法启动。

这是我的最基本的配置;

    vrrp_sync_group PUBLIC_WEB_IPS {
            group {
                    public_http_ip_lan
            }
    }

    vrrp_instance public_http_ip_lan {
            state MASTER
            interface br1118
            virtual_router_id 18
            priority 100
            advert_int 1
            virtual_ipaddress {
                    192.168.0.254/24 dev br1118
            }
            nopreempt

    }

当我启动 keepalived 时,没有出现任何错误,但似乎大部分时间都在等待启动,然后暂停/挂起?这是启动时来自 /var/log/syslog 的信息keepalived

Apr 11 17:25:33 basil Keepalived[8047]: Starting Keepalived v1.2.7 (04/08,2013)
Apr 11 17:25:33 basil Keepalived[8048]: Starting Healthcheck child process, pid=8051
Apr 11 17:25:33 basil Keepalived[8048]: Starting VRRP child process, pid=8052
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Initializing ipvs 2.6
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Interface queue is empty
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: No such interface, eth0
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: No such interface, eth1.116
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: No such interface, br1116
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: No such interface, eth1.118
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: No such interface, br1118
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP 10.0.115.69 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP 10.0.116.249 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP 192.168.0.250 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP fe80::2a0:c9ff:fe8f:4164 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP fe80::220:edff:fe9f:9774 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP fe80::2a0:c9ff:fe8f:4164 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP fe80::2a0:c9ff:fe8f:4164 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP fe80::2a0:c9ff:fe8f:4164 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Netlink reflector reports IP fe80::2a0:c9ff:fe8f:4164 added
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Registering Kernel netlink reflector
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Registering Kernel netlink command channel
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Configuration is using : 2777 Bytes
Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Using LinkWatch kernel netlink reflector...

keepalived仍在运行(CPU 使用率为 2~3%,RAM 为 10%)

user@basil:/usr/local/etc/keepalived$ ps aux | grep keepalived
root      8048  0.0  0.1   8372   808 ?        Ss   17:25   0:00 /usr/local/sbin/keepalived -D
root      8051  0.0  0.3   8492  1820 ?        S    17:25   0:00 /usr/local/sbin/keepalived -D
root      8052  0.0  0.2   8492  1344 ?        S    17:25   0:00 /usr/local/sbin/keepalived -D

当我启动 keepalived 时,tcpdump 中没有显示任何内容,没有广告,例如:

user@basil:~$ sudo tcpdump -nlASX -s 0 -vvv -e src net 192.168.0.0/24 and not port 22tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes

桥接接口已启动(因为它跨单独的 VLAN 运行);

user@basil:/usr/local/etc/keepalived$ ip a s br1118
11: br1118: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether 00:a0:c9:8f:41:64 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.250/24 brd 192.168.0.255 scope global br1118
    inet6 fe80::2a0:c9ff:fe8f:4164/64 scope link 
       valid_lft forever preferred_lft forever

我可以 ping 通该 VLAN 上的主机。这是怎么回事?我怀疑我犯了一个非常愚蠢的错误,但我没发现任何问题。

更新:

就像要求的一样:

user@basil:~$ ifconfig -a
br1116    Link encap:Ethernet  HWaddr 00:a0:c9:8f:41:64  
          inet addr:xxxxx  Bcast:xxxxx  Mask:xxxx
          inet6 addr: fe80::2a0:c9ff:fe8f:4164/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1120 (1.0 KiB)  TX bytes:468 (468.0 B)

br1118    Link encap:Ethernet  HWaddr 00:a0:c9:8f:41:64  
          inet addr:xxxxx  Bcast:xxxxx  Mask:xxxx
          inet6 addr: fe80::2a0:c9ff:fe8f:4164/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:19 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1064 (1.0 KiB)  TX bytes:468 (468.0 B)

eth0      Link encap:Ethernet  HWaddr 00:20:ed:9f:97:74  
          inet addr:xxxx  Bcast:xxxxx  Mask:xxxxx
          inet6 addr: fe80::220:edff:fe9f:9774/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:169 errors:0 dropped:0 overruns:0 frame:0
          TX packets:96 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:20019 (19.5 KiB)  TX bytes:11089 (10.8 KiB)

eth1      Link encap:Ethernet  HWaddr 00:a0:c9:8f:41:64  
          inet6 addr: fe80::2a0:c9ff:fe8f:4164/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:150 errors:0 dropped:10 overruns:0 frame:0
          TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:11680 (11.4 KiB)  TX bytes:2436 (2.3 KiB)

eth1.116  Link encap:Ethernet  HWaddr 00:a0:c9:8f:41:64  
          inet6 addr: fe80::2a0:c9ff:fe8f:4164/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1120 (1.0 KiB)  TX bytes:936 (936.0 B)

eth1.118  Link encap:Ethernet  HWaddr 00:a0:c9:8f:41:64  
          inet6 addr: fe80::2a0:c9ff:fe8f:4164/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:19 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1064 (1.0 KiB)  TX bytes:936 (936.0 B)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:10 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:732 (732.0 B)  TX bytes:732 (732.0 B)

我刚刚重新启动了这个盒子,这就是流量计数器较低的原因。

答案1

我遇到的情况是 keepalived 启动后什么也不做,最后一条日志行是;

Apr 11 17:25:33 basil Keepalived_healthcheckers[8051]: Using LinkWatch
kernel netlink reflector...

删除设置并重新启动后,我发现有两种情况 keepalived 会在此时停止并且不执行任何操作;

  1. Keepalived 被指向 keepalived.conf 文件,因此从技术上讲,它无需配置即可启动

  2. Keepalived 正在加载配置文件,但有一个错误(例如拼写错误)

答案2

keepalived 的启动问题通常是由于 keepalived.conf 文件中的错误造成的。keepalived 目前不支持检查配置文件,如果发现任何错误,它通常会忽略所有可能的错误。

但是有一种方法可以更轻松地检测配置问题。您应该使用一个-d开关启动 keepalived,该开关会将配置数据转储到 syslog 中。如果您从 Red Hat/Centos 软件包安装了它,只需编辑/etc/sysconfig/keepalived并附加到-dKEEPALIVED_OPTIONS 变量中:

KEEPALIVED_OPTIONS="-D -d"

现在,当您启动 keepalived 时,您将能够在 syslog 中读取 keepalived 解析的配置数据。此外,如果配置的某些部分有效,而其他部分无效,则可能是因为您忘记用右括号关闭一个配置块。

答案3

在 RHEL 6.5 中遇到了同样的问题,如果从源代码编译 keepalived,它会将配置文件放在/usr/local/etc/keepalived,由于某种原因,keepalived 没有在那里查找,因此我取出 keepalived.conf 并将其放在 中/etc/keepalived.conf/etc/keepalived/keepalived.conf之后一切就正常了!

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