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- <li><em>date</em>: Mon Nov 29 20:36:50 2004</li>
- <li><em>from</em>: cfowler at outpostsentinel.com (Christopher Fowler)</li>
- <li><em>in-reply-to</em>: <<a href="msg01114.html">[email protected]</a>></li>
- <li><em>references</em>: <<a href="msg01064.html">[email protected]</a>> <<a href="msg01106.html">[email protected]</a>> <<a href="msg01107.html">[email protected]</a>> <<a href="msg01114.html">[email protected]</a>></li>
- <li><em>subject</em>: [ale] failover planning</li>
On Mon, 2004-11-29 at 20:27, Bob Toxen wrote:
> On Mon, Nov 29, 2004 at 07:49:43PM -0500, Christopher Fowler wrote:
> > Speaking of failover is it possible to install 2 NICS in Linux and put
> > them on the same subnet. I.E. eth0 = 192.168.1.4 and eth1 = 192.168.1.5
> > then place those NICS under load balancing. In this case both will have
> > the same DNS and same gateway. All load balancing setups I've seen load
> > balance between multiple Internet connections.
> Sure. No problem. Of course, this is needed only if your total bandwidth
> requirements exceed that of a single NIC (either 100 Mbps duplex or 1 Gbps).
>
> Bob Toxen
> bob at verysecurelinux.com [Please use for email to me]
> <a rel="nofollow" href="http://www.verysecurelinux.com";>http://www.verysecurelinux.com</a> [Network&Linux/Unix security consulting]
> <a rel="nofollow" href="http://www.realworldlinuxsecurity.com";>http://www.realworldlinuxsecurity.com</a> [My book:"Real World Linux Security 2/e"]
> Quality Linux & UNIX security and SysAdmin & software consulting since 1990.
>
> "Microsoft: Unsafe at any clock speed!"
> -- Bob Toxen 10/03/2002
>
>
> > On Mon, 2004-11-29 at 19:40, Greg Freemyer wrote:
> > > On Mon, 29 Nov 2004 09:51:34 -0500, James P. Kinney III
> > > <jkinney at localnetsolutions.com> wrote:
> > > > I am looking at setting up a small non-local redundant webserver. The
> > > > net access for each node is through different ISP's so each node has
> > > > different IP's. In fact, there is nothing in common between the two
> > > > different networks. They have no common router.
> > > >
> > > > The main site is serverd by a T1 line that is susceptable to an outage
> > > > caused by falling trees. I would like to make the outage as short as
> > > > possible by making the backup site live as fast as possible. Right now,
> > > > other than editing the DNS listing and waiting for the change to
> > > > propogate, I have no other way to do this.
> > > >
> > > > Any suggestions?
> > > > --
> > > > James P. Kinney III \Changing the mobile computing world/
> > >
> > > If nothing else, you could try round-robin DNS.
> > >
> > > That way roughly half of your dns quiries will go to each IP.
> > >
> > > Then set your client TTL low so your users are requesting a new DNS
> > > entry fairly often.
> > >
> > > If one of your sites fails, there is a 50% chance your users will go
> > > to the other site with their next DNS request. (ie. if you have M$
> > > users, they do a dns request at least once per reboot.)
> > >
> > > Greg
</pre>
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<li><strong><a name="01120" href="msg01120.html">[ale] failover planning</a></strong>
<ul><li><em>From:</em> ups at tree.com (Stephan Uphoff)</li></ul></li>
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<li><strong><a name="01064" href="msg01064.html">[ale] failover planning</a></strong>
<ul><li><em>From:</em> jkinney at localnetsolutions.com (James P. Kinney III)</li></ul></li>
<li><strong><a name="01106" href="msg01106.html">[ale] failover planning</a></strong>
<ul><li><em>From:</em> greg.freemyer at gmail.com (Greg Freemyer)</li></ul></li>
<li><strong><a name="01107" href="msg01107.html">[ale] failover planning</a></strong>
<ul><li><em>From:</em> cfowler at outpostsentinel.com (Christopher Fowler)</li></ul></li>
<li><strong><a name="01114" href="msg01114.html">[ale] failover planning</a></strong>
<ul><li><em>From:</em> bob at verysecurelinux.com (Bob Toxen)</li></ul></li>
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