|
Hello I just started learning how to do loadbalancing using LVS
and piranha. As an example I wanted to have a loadbalancer running in front of
one webserver (testing). I want to use direct routing. The IP of the
loadbalancer is e.g. 236.25.1.1 the one of the webserver is 236.25.1.2 (web01)
and the VIP is 236.25.1.3. Here is the lvs.cf file I created with the aid of
piranha_gui: serial_no = 67 primary = 236.25.1.1 service = lvs backup_active = 0 backup = 0.0.0.0 heartbeat = 1 heartbeat_port = 539 keepalive = 6 deadtime = 18 network = direct debug_level = NONE monitor_links = 0 virtual webserver { active = 1 address = 236.25.1.3
eth0:1 vip_nmask =
255.255.255.0 port = 80 send =
"GET / HTTP/1.0rnrn" expect =
"HTTP" use_regex =
0
load_monitor = ruptime scheduler =
wlc protocol =
tcp timeout = 6 reentry =
15
quiesce_server = 1 server web01
{
address = 236.25.1.2
active = 1
weight = 1 } } -
The webservice on web01 is running
correctly. -
I can ping the VIP 236.25.1.3. -
The output of “/sbin/ip addr”
looks fine: the interface eth0 has the rigth secondary IP. -
If I run “tcpdump host web01”
I see that there is some communication (eg a “GET / HTTP/1.0”)
between the loadbalancer and web01. -
The output of “/sbin/sysctl
net.ipv4.ip_forward” is “net.ipv4.ip_forward = 1”. But if I try to connect to the VIP on port 80 I get a “connection
refused”. Something is wrong but what? In the /var/log/messages I have a
lot of the following lines: Sep 24 00:09:35 loadbalancer nanny[3925]: READ to 236.25.1.2:80
timed out Sep 24 00:09:47 loadbalancer nanny[3925]: READ to 236.25.1.2:80
timed out Some idea where I have to look for to solve the problem? By the way: how can I increase the debuglevel? As far as I
have seen it is not possible with GUI. Thanks’ in advance Pedro |
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