Keepalived (High availability) doesn't work

Installing and Using OpenWrt
1

I just started learning openwrt. It's been a day, the keepalive still doesn't work. I reset the 2 openwrt routers and only configure static WAN. Everything else is default. I really appreciate it if someone could give me some advice or help.

  1. openwrt_a
    LAN ip: 192.168.1.1/24
    WAN IP, gateway: static 192.168.50.3/24 gw 192.168.50.1

  2. openwrt_b (haven't configured it yet)
    LAN ip: 192.168.1.2/24
    WAN IP, gateway: static 192.168.50.4/24 gw 192.168.50.1

openwrt_a:

 /etc/keepalived/keepalived.conf
vrrp_sync_group G1 {
  group {
    E1
  }
}

vrrp_instance E1 {
  state MASTER
  interface eth1
  virtual_router_id 51
  priority 101
  advert_int 1
  virtual_ipaddress {
    192.168.50.5/24 dev eth1
  }
  virtual_routes {
    src 192.168.50.5 to 0.0.0.0/0 via 192.168.50.1 dev eth1 metric 5
  }
  authentication {
    auth_type PASS
    auth_pass s3cret
  }
  nopreempt
}

then I type "/etc/init.d/keepalived start" to start it

As follows, I can't see this virtual IP by using ifconfig and route -n

root@OpenWrt:~# ifconfig
br-lan    Link encap:Ethernet  HWaddr 00:F1:F3:1F:DA:24  
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fd6b:8b1c:a13d::1/60 Scope:Global
          inet6 addr: fe80::2f1:f3ff:fe1f:da24/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8393 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3305 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1267167 (1.2 MiB)  TX bytes:826470 (807.0 KiB)

eth0      Link encap:Ethernet  HWaddr 00:F1:F3:1F:DA:24  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8414 errors:0 dropped:8 overruns:0 frame:0
          TX packets:3383 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1386418 (1.3 MiB)  TX bytes:831022 (811.5 KiB)
          Memory:b2100000-b21fffff 

eth1      Link encap:Ethernet  HWaddr 00:F1:F3:1F:DA:25  
          inet addr:**192.168.50.3**  Bcast:192.168.50.255  Mask:255.255.255.0
          inet6 addr: fe80::2f1:f3ff:fe1f:da25/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5704 errors:0 dropped:1425 overruns:0 frame:0
          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:840412 (820.7 KiB)  TX bytes:4690 (4.5 KiB)
          Memory:b1e00000-b1efffff 

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:778 errors:0 dropped:0 overruns:0 frame:0
          TX packets:778 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:60879 (59.4 KiB)  TX bytes:60879 (59.4 KiB)


root@OpenWrt:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.50.1    0.0.0.0         UG    0      0        0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 br-lan
192.168.50.0    0.0.0.0         255.255.255.0   U     0      0        0 eth1
2

Did you specify the path to the custom config file in /etc/config/keepalived?

config globals 'globals'
    option alt_config_file '/etc/keepalived/keepalived.conf'

Also, check the logs by running logread -e Keepalived

ifconfig is deprecated and will not show you the secondary assigned IP address.
Use commands from the iproute2 suite instead.

ip addr show dev eth1; ip route
2 Likes
3

Thank you very much for your advice.

I find that when I re-enable the service with the following command, the keepalived works, and I can see the vip based on your command.

Service keepalived stop.
service keepalived disable
 /usr/sbin/keepalived

I found that the following CML doesn't seem to be very important. Keepalive can work without it.

config globals 'globals'
    option alt_config_file '/etc/keepalived/keepalived.conf'