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I'm trying to get basic load balancing working with keepalived. It seems to be
working but I can only connect to the virtual_server IP from the load balancer
itself. If I try to make requests from other servers on our network they time
out. Here is our config:
global_defs {
notification_email {
person@xxxxxxxxxx<mailto:person@xxxxxxxxxx>
}
notification_email_from
lb_cluster1@xxxxxxxxxxxxxx<mailto:lb_cluster1@xxxxxxxxxxxxxx>
smtp_server 10.140.0.140
smtp_connect_timeout 30
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 101
smtp_alert
virtual_ipaddress {
10.110.7.159
}
}
virtual_server 10.110.7.159 80 {
delay_loop 10
protocol TCP
lb_algo rr
lb_kind NAT
persistence_timeout 7200
real_server 10.110.7.51 80 {
weight 1
TCP_CHECK {
connect_timeout 5
connect_port 80
}
}
real_server 10.110.7.52 80 {
weight 1
TCP_CHECK {
connect_timeout 5
connect_port 80
}
}
}
output from ipvsadm:
ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
qlen 1000
link/ether 00:50:56:b7:3e:f2 brd ff:ff:ff:ff:ff:ff
inet 10.110.7.157/24 brd 10.110.7.255 scope global eth0
inet 10.110.7.159/32 scope global eth0
inet6 fe80::250:56ff:feb7:3ef2/64 scope link
valid_lft forever preferred_lft forever
curl from the localhost:
curl 10.110.7.159
<html><body><h1>It works!</h1></body></html>
>From any other server or host on our network (same subnet or not) it times out.
I did notice that most other examples for keepalived and lb_kind NAT are using
2 different subnets but we'd like to avoid that if possible. It's also possible
that it's required but I'm not totally sure how or why.
--
Franck Fallateuf
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