[Linux-HA] Heartbeat with squid, need help

[Chun Tian (binghe)]

Hi there

I suggest you do following instead:

1) Run Squid on both servers, listening on port 80 (for example) on  
0.0.0.0

2) Use Heartbeat to let a Interface IP Address (which maybe registed  
in DNS) failover between two servers.

Heartbeat's IPaddr2 resource is quite stable than others you write  
yourself.

And, there's another better way which can use both servers at the same  
time:

1) Run Squid on both servers,

2) Choose your another two servers to run heartbeat/LVS (ldirectord  
resource). LVS can make both squid being used, and if one of your  
squid down, the ldirectord script will automatically disconnect it.

Both way I'm using right now.

Regards,

Chun Tian (binghe)

> I am new to Heartbeat all over a couple days.
>
> Goal: Two Squid cache servers running in failover mode. When the  
> squid process dies on one server, failover to the other.
> OS: RHEL5
> Squid: 2.6Stable18
> Heartbeat: 2.1.3 compiled from source
>
> Server #1
> Name: Squid1
> eth0 = IP address on the local LAN, this is the IP that people  
> should use for squid, lets say 10.95.1.1 (this should be the same IP  
> as the failover, yes?)
> eth1 = interface for heartbeats to the failover. This is using a x- 
> over cable to the eth1 on the other server. 192.168.1.1 /24
>
> Server #2
> Name: Squid2
> eth0 = IP address on the local LAN, this is the IP that people  
> should use for squid, lets say 10.95.1.1 (this should be the same IP  
> as the failover, yes?)
> eth1 = interface for heartbeats to the failover. This is using a x- 
> over cable to the eth1 on the other server. 192.168.1.2 /24
>
> Both servers can ping each other over the xover
>
> I currently have heartbeat fully running as per Alan's first  
> "Installing Heartbeat" screencast
>
> ha.cf
>
> use_logd yes
> bcast eth1
> node squid1 squid2
> crm on
>
> My haresources is blank for now , until i know how to do what I need.
>
> crm_mon says:
>
> ============
> Last updated: Fri Apr 18 14:50:58 2008
> Current DC: squid1 (1691d699-2a81-4545-8242-b00862431514)
> 2 Nodes configured.
> 0 Resources configured.
> ============
>
> Node: squid1 (1691d699-2a81-4545-8242-b00862431514): online
> Node: squid2 (2422b230-22f2-451b-aa95-0b783eccab8d): online
>
> If i start and stop heartbeat randomly on the servers crm_mon  
> changes as it should.
>
> I have squid running on both servers.....How do I configure (based  
> on my info above) heartbeat to listen on each server and when squid  
> process stops to failover. Also, dont the IP's that my clients have  
> to access the squid server need to be the same on both servers? Any  
> help would be huge!
>
> Thanks,
> Nick
>
>
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