Hello all,
I set up a quick HA cluster yesterday. I've got 2 resource groups.
*Here's a quick snapshot:
*
Online: [ firethorn vanderbilt ]
Resource Group: Web_Cluster
WebSite (ocf::heartbeat:apache): Started firethorn
ClusterIP (ocf::heartbeat:IPaddr2): Started firethorn
Resource Group: LVS_Cluster
LdirectorIP (ocf::heartbeat:IPaddr2): Started firethorn
ldirectord (ocf::heartbeat:ldirectord): Started firethorn
The Web_Cluster group is a straight forward active/passive webserver
cluster. Works perfectly.
The ldirector set up is giving me issues. I've got everything installed
correctly and on the face of it, it starts up fine. I am redirecting
traffic to one web server only for now until I get this thing running.
*Here is ipvsadm on the active server:*
root@firethorn:/etc/ha.d# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP firethorn.local:www lc
-> triglav.local:www Tunnel 1 0 0
*On the back end server I created a secondary loopback pointing to the VIP*
triglav www # ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 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
inet 192.168.2.3/32 scope global lo:1
triglav www # ifconfig lo:1
lo:1 Link encap:Local Loopback
inet addr:192.168.2.3 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
*I added the following to the sysctl.conf on the backend server*
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.eth0.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.eth0.arp_announce = 2
*I added the following to the sysctl.conf to both front end LVS servers:*
net.ipv4.ip_forward = 1
*When I try to get to port 80 on the back end server via the VIP, it
never gets there. Instead, it hangs and Inactive connections begin
queuing up* *as you can see here:*
root@firethorn:/etc/ha.d# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP firethorn.local:www lc
-> triglav.local:www Tunnel 1 0 3
*So, can anyone guess at what I missed? For some reason connections are
not flowing through to the back end web server.*
As usual - thanks for all replies and suggestions.
- Mike
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