Finally I am going to implement it on my home PCs each with 2 NICS before
attempting it in production servers. One(eth0) is connected to DSL cable for
intenet and other(eth1) I will use for Local intranet connectivity.
PC1: eth0: 10.0.16.111 eth0:0 10.0.16.115 eth1: 192.168.100.10
PC2: eth0: 10.0.16.113 eth1: 192.168.100.20
10.0.16.115 will be my VIP. Questions: Do I have to define eth0:0 in PC1 or
just declaring it in haresources file is ok. Now suppose if someone pulls the
cable of say, eth0 / eth1 of PC1 then PC2 will take over, RIGHT?
Now when PC2 takes over then it will start the services listed in this line
masternode IPaddr::10.0.16.115 httpd
So instead of httpd I will write a startup script of my own with lots of
ipconfig command and iptables rules in that scripts Start and Stop function and
put it in init.d location. The purpose of this is when PC2 takes over its IP
will be changed to eth0: 10.0.16.113 and eth1: 192.168.100.10. These IP s will
be static IPs so I think no problem will arise.
And Alan, sorry I couldn't make use of your that flash tutorial. Actually I
didn't understood that clearly.
Waiting for your suggestions.
Dejan Muhamedagic <[EMAIL PROTECTED]> wrote: On Wed, Mar 28, 2007 at 07:10:58AM
-0700, Tanveer Chowdhury wrote:
> hey thanks. The problem is I m not in the position to install any GUI to
> setup this.
You don't need to install a GUI on the cluster itself, just on
your workstation, or any computer which would be able to access
some cluster node on some TCP port.
> Further I failed to match the link with my scenario. May be too
> dumb to understand that.
I didn't see what Alan prepared, but then I could well imagine
that it does have something to do with where you're trying to get.
> Anyway one thing also to ask if any
> interface gets down but the services are ok on master then how
> come the slave will take over?
A network interface is a resource. A service (or what you presume
to be a service) is also a resource. To heartbeat both are the
same. A failing interface is the same as a failing service, i.e.
it's a failed resource.
> Alan Robertson wrote: Tanveer Chowdhury wrote:
> > Hi all: Thank you for all your help and support. This is what I am
> > going to do after reading carefully the documentation.
> >
> > Server PC will have 3 NICS and all three NICS with real IP. Only one
> > NIC is aliased to support blocks of internal private network to
> > access Internet. You already know what scenario I am trying to
> > achieve here and also attached the document that I will follow with a
> > little modification to server my purpose. My slave has also 3 NICS
> > and will make an exact of IPs as it was in server when master server
> > fails.
> >
> >
> > Now my steps are as follows: As heartbeat only looks for services
> > which can be start/stop using service command so I made a service
> > script and put it in /etc/rc./init.d and it works. Below is the
> > script: [b] #!/bin/sh # /etc/init.d/ha #
> >
> > #some things that run always touch /var/lock/ha
> >
> > #carry out specific functions when asked to by the system
> >
> > case "$1" in start) echo " starting ha script to Change IP of Slave"
> > ifconfig eth0 192.168.100.11 netmask 255.255.255.0 up ...//all the ip
> > change command will write here and also iptbales rules one by one ;;
> >
> > stop) echo " starting ha script to change IP back" # ifconfig eth0
> > 192.168.100.10 netmask 255.255.255.0 up ...//change all the ip change
> > command will write here and also iptbales rules one by one ;;
> >
> > *) echo "Usage:: /etc/init.d/ha {start | stop}" exit 1 ;; esac exit 0
> > [/b]
> >
> > Now this script has all the IP configuration and will put this on
> > both master and slave so when Master start it will set the IP as
> > required and when master fails and stops the service then actually
> > executes the stop fucntion and slave takes over the virtual IP and
> > executes this script again setting the same IP configuration like
> > master though initially slave had a diff IP settings than master. AM
> > I right?
> >
> > What you think of this? Will this work or I m making some move ?
> > Please let me know. Waiting for your kind response.
>
>
> Why don't you just use our IPaddr resource that we already supply?
>
> Here's how to configure IPaddr (IPaddr2) using the GUI:
> http://wiki.linux-ha.org/Education/Newbie/IPaddrScreencast
>
> Hope that helps...
>
> --
> Alan Robertson
>
> "Openness is the foundation and preservative of friendship... Let me
> claim from you at all times your undisguised opinions." - William
> Wilberforce
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>
>
>
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--
Dejan
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