Re: Generating a haproxy cluster

Mon, 24 Mar 2014 10:29:33 -0700

I use corosync with pacemaker. I have multiple resources on my haproxy and I use pacemaker to colocate all of the ip's i use on the master node. As the IP's can't exist on 2 nodes at the same time, haproxy cant be running on the standby nodes as haproxy will not be running on the standby node. You will either need to add a lsb resource for haproxy, or do it some other way. I am currently looking at the lsb resource, so I am doing it in another way. 

On 24/03/2014 16:52, Thomas Heil wrote:

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Hi,
On 24.03.2014 17:40, Juan Pablo Lorier wrote:

Hi,

I'm trying to create a high available solution of load balancers and I
found haproxy that looks like all I need. The only thing I'm not shure
is if I can create a cluster of haproxy server as a built in function of
haproxy (all docs I find refer of a cluster of web servers, not the load
balancers) or if it's like nginx that need to manage HA with pacemaker
or somthing like that.

Its like nginx. You would need to manage either with pacemaker or
keepalived.
There is no built-in high availability.
In case of pacemaker you could setup:
  - floating ip and lsb service haproxy (in case of failover you should
just clone the
    lsb ressource to all nodes, so that haproxy is running on all nodes
all the time.
  - cluster_ip and lsb service haproxy. if your environment supports it
In case of keepalived:
  - create a master slave VIP and ensure that haproxy is running. if it fails
    let keepalived do a switchover to the over node, hopefully haproxy
runs there.

Regards,

Juan Pablo Lorier



cheers
thomas


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