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hi ,dear all
I am newbie for LVS and keepalived. I met one problem when I was building
the lvs+ keepalived environment.
After I installed lvs and keepalived, I checked all them are all installed
ok.
[root@p-lvs-1 ~]# ipvsadm -V
Try `ipvsadm -h' or 'ipvsadm --help' for more information.
[root@p-lvs-1 ~]# ipvsadm -v
ipvsadm v1.25 2008/5/15 (compiled with popt and IPVS v1.2.1)
[root@p-lvs-1 ~]# keepalived -v
Keepalived v1.2.2 (11/16,2012)
[root@p-lvs-1 ~]# lsmod | grep ip_vs
ip_vs_wlc 1241 0
ip_vs_rr 1420 1
ip_vs 115490 5 ip_vs_wlc,ip_vs_rr
libcrc32c 1246 1 ip_vs
ipv6 322541 32
ip_vs,ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6
I think the ipvsadm and keepalived are OK, not that?
The following is the keepalived.conf of Mater node:
[root@p-lvs-1 ~]# cat /etc/keepalived/keepalived.conf
global_defs {
lvs_id LVS_DEVEL_2
}
vrrp_sync_group VGM {
group {
VI_GW
}
}
vrrp_instance VI_GW {
state BACKUP
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 216
priority 90
advert_int 5
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.75.253 dev eth0 label eth0:0
}
}
virtual_server 192.168.75.253 80 {
delay_loop 6
lb_algo rr
lb_kind DR
persistence_timeout 10
protocol TCP
real_server 192.168.75.142 80 {
weight 100
TCP_CHECK {
connect_timeout 5
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
After service keepalived start, I found that:
[root@p-lvs-1 ~]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.75.253:http rr persistent 10
Here is no REAL IP, I am so confused?? I thinks if using keepalived, I
should not add VIP manually. is that?
AND get trace as following:
Nov 17 09:40:43 p-lvs-1 Keepalived[27838]: Starting Keepalived v1.2.4
(11/15,2012)
Nov 17 09:40:43 p-lvs-1 Keepalived[27839]: Starting Healthcheck child
process, pid=27840
Nov 17 09:40:43 p-lvs-1 Keepalived[27839]: Starting VRRP child process,
pid=27841
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Interface queue is empty
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: No such interface, virbr0
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: No such interface,
virbr0-nic
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Netlink reflector reports
IP 192.168.75.135 added
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Netlink reflector reports
IP 192.168.122.1 added
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Netlink reflector reports
IP fe80::44d5:d7ff:fed8:ba5a added
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Registering Kernel netlink
reflector
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Registering Kernel netlink
command channel
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Registering gratuitous ARP
shared channel
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Interface queue
is empty
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: No such
interface, virbr0
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: No such
interface, virbr0-nic
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Netlink reflector
reports IP 192.168.75.135 added
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Netlink reflector
reports IP 192.168.122.1 added
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Netlink reflector
reports IP fe80::44d5:d7ff:fed8:ba5a added
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Registering
Kernel netlink reflector
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Registering
Kernel netlink command channel
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Opening file
'/etc/keepalived/keepalived.conf'.
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Configuration is using :
63907 Bytes
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: Using LinkWatch kernel
netlink reflector...
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: VRRP_Instance(VI_GW)
Entering BACKUP STATE
Nov 17 09:40:43 p-lvs-1 Keepalived_vrrp[27841]: VRRP sockpool: [ifindex(2),
proto(112), fd(10,11)]
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Opening file
'/etc/keepalived/keepalived.conf'.
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Configuration is
using : 9995 Bytes
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Using LinkWatch
kernel netlink reflector...
Nov 17 09:40:43 p-lvs-1 Keepalived_healthcheckers[27840]: Activating
healthchecker for service [192.168.75.142]:80
Nov 17 09:40:44 p-lvs-1 Keepalived_healthcheckers[27840]: TCP connection to
[192.168.75.142]:80 failed !!!
Nov 17 09:40:44 p-lvs-1 Keepalived_healthcheckers[27840]: Removing service
[192.168.75.142]:80 from VS [192.168.75.253]:80
Nov 17 09:40:44 p-lvs-1 Keepalived_healthcheckers[27840]: Lost quorum 1-0=1
> 0 for VS [192.168.75.253]:80
Nov 17 09:40:47 p-lvs-1 Keepalived_vrrp[27841]: ip address associated with
VRID not present in received packet : 192.168.75.253
Nov 17 09:40:47 p-lvs-1 Keepalived_vrrp[27841]: one or more VIP associated
with VRID mismatch actual MASTER advert
Nov 17 09:40:47 p-lvs-1 Keepalived_vrrp[27841]: bogus VRRP packet received
on eth0 !!!
Nov 17 09:40:47 p-lvs-1 Keepalived_vrrp[27841]: VRRP_Instance(VI_GW)
ignoring received advertisment...
I don't know what induced "TCP connection to [192.168.75.142]:80 failed
!!!" ?
In the Real Server 192.168.75.142, I set with following :
ifconfig lo:0 192.168.75.142 broadcast 192.168.75.142 netmask
255.255.255.255 up
route add -host 192.168.75.142 dev lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
And checks whether are ok:
[root@p-rs-1 home]# ifconfig
eth0 Link encap:Ethernet HWaddr 2E:F0:45:48:F1:C6
inet addr:192.168.75.142 Bcast:192.168.75.255 Mask:255.255.255.0
inet6 addr: fe80::2cf0:45ff:fe48:f1c6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:142355 errors:0 dropped:0 overruns:0 frame:0
TX packets:17953 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8113255 (7.7 MiB) TX bytes:1209010 (1.1 MiB)
Interrupt:10 Base address:0xe000
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:16436 Metric:1
RX packets:68 errors:0 dropped:0 overruns:0 frame:0
TX packets:68 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4782 (4.6 KiB) TX bytes:4782 (4.6 KiB)
lo:0 Link encap:Local Loopback
inet addr:192.168.75.253 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
virbr0 Link encap:Ethernet HWaddr 52:54:00:D2:7A:6C
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:509 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:26642 (26.0 KiB)
[root@p-rs-1 home]# cat /proc/sys/net/ipv4/conf/lo/arp_ignore
1
[root@p-rs-1 home]# cat /proc/sys/net/ipv4/conf/lo/arp_announce
2
[root@p-rs-1 home]# cat /proc/sys/net/ipv4/conf/all/arp_ignore
1
[root@p-rs-1 home]# cat /proc/sys/net/ipv4/conf/all/arp_announce
2
[root@p-rs-1 home]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.75.253 0.0.0.0 255.255.255.255 UH 0 0 0 lo
192.168.75.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0
virbr0
0.0.0.0 192.168.75.1 0.0.0.0 UG 0 0 0 eth0
Are there any problems with the Real Server settings?
I think the LVS node has not connect with RealServer . But I dont know what
induced that, and have no idea how to find that?
I am very appreciated of your advice and free sharings.
cheers,
para
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