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Old 05-20-2015, 07:07 AM   #1
LQ Newbie
Registered: Feb 2011
Posts: 9

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haproxy: issues failing over

I have a setup as follows:
- There's one 1 haproxy server that points to primary and secondary apache servers
- The primary apache server is A, and secondary is B.
- B should become the primary only if A is unavailable.
- A will return to the primary when it becomes available again.

To test, I stop apache on A, and haproxy points to B as expected.

The problem I'm having is: when I edit the IP address of A in /etc/hosts (on the haproxy server) to make A seem unavailable, haproxy does not point to B.

How can I accomplish this?


My haproxy.cfg is:

log local1 debug
maxconn 2000
user haproxy
group haproxy
log global
mode http
option httplog
option http-no-delay
option dontlognull
retries 3
option redispatch
option http-use-proxy-header
timeout connect 1000
timeout client 1000
timeout server 1000
listen appname haproxy-01:8080
mode http
option httpchk
stats enable
stats uri /haproxy?stats
stats realm Strictly\ Private
stats auth adminassword
stats auth Another_Userasswd
balance static-rr
option httpclose
#option forwardfor

server lamp1 sandbox-01:80 check inter 2s fall 2 rise 2
server lamp2 sandbox-02:80 check backup inter 2s fall 2 rise 2
Old 05-21-2015, 01:14 PM   #2
LQ Newbie
Registered: Feb 2011
Posts: 9

Original Poster
Rep: Reputation: 0
Apparently editing /etc/hosts isn't a valid test. i ended up blocking ports via iptables and simulating latency via tc, and that seemd to allow haproxy to work as expected.



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