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rshadow
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Joined: 28 Nov 2003
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 Posted: Sat Jul 17, 2004 11:12 am Post subject: 1U servers and other questions |
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for a while now I have used linux (gentoo) to run a webserver / mailserver . However this has always been a single machine. What i would like to do is build a cluster of machines to host my services. The way I would like it to work (in theory) is the following
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(internet)
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(DSL Modem)
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(Load Balancer (gentoo)) --- (Load Balancer (gentoo) )
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(web/mail) (web/mail) (web/mail)
(some sort of shared file system)
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The load balancers would be connected via a hearbeat program to eliminate a single point of failure. They would distribute the load evenely over xx amount of identical machines. The identical machines should have the exact same config files for everything (they are identical) however instead of changing the files on every machine I want the to be able to read their config from the same source .. for example maybe have /etc partition being pulled off another machine.
However what I'm looking for are some dummy guides or information regarding linux networking in general and shared file systems.
The other questions comes from the following. Orginialy I was going to use regular desktop systems (some old ones) and network them together. However I have some seen some ad's for 1U servers for very low prices.
The question is.. what is a 1U server? From what I can tell they are regular machines packed into tiny cases..
sorry if I sound dumb about the subject.. but I am  (hey, I've been programming C++ forever.. I'm not a network guy) |
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gnuageux
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Joined: 17 Apr 2004
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| Posted: Sat Jul 17, 2004 12:31 pm Post subject: |
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/etc/distfile?
grady@K-Mart ~$ emerge -s rdist
Searching...
[ Results for search key : rdist ]
[ Applications found : 1 ]
* net-misc/rdist
Latest version available: 6.1.5-r1
Latest version installed: [ Not Installed ]
Size of downloaded files: 115 kB
Homepage: http://www.magnicomp.com/rdist/rdist.shtml
Description: Remote software distribution system
License: RDist
I also wonder do you have enough incoming traffic to justify the expense of a load balancer, or two?\
a 1U server stands for 1 rack unit. Thats how space is measured in cabinets in data centers and such. So a 2U server will occupy double the space that 1U rackmount will.
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Last edited by gnuageux on Sat Jul 17, 2004 12:35 pm; edited 1 time in total |
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Mit
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Joined: 13 Apr 2003
Posts: 260
Location: Under a rock.
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| Posted: Sat Jul 17, 2004 12:34 pm Post subject: Re: 1U servers and other questions |
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| rshadow wrote: | The other questions comes from the following. Orginialy I was going to use regular desktop systems (some old ones) and network them together. However I have some seen some ad's for 1U servers for very low prices.
The question is.. what is a 1U server? From what I can tell they are regular machines packed into tiny cases.. |
Your basically right, they are small rack mountable servers, 1U being the height mesurement of these things. You can get 2U and 4U too.
I -think- 1U is 1.5 to 2 inches (can't remember exactly)
HTH
Mit |
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rshadow
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| Posted: Sat Jul 17, 2004 12:43 pm Post subject: |
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| gnuageux wrote: |
I also wonder do you have enough incoming traffic to justify the expense of a load balancer, or two?\
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No.. Not really but I've figured out in my life that I'm always going to spend my money on stuff that I really don't need. Might as well spend my money on something that can teach me something |
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gnuageux
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| Posted: Sat Jul 17, 2004 12:55 pm Post subject: |
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LMAO. I was just curious, didnt mean to sound condesending or anything
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rshadow
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| Posted: Sat Jul 17, 2004 1:37 pm Post subject: |
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LOL Hey I figure that everybody around me (I'm in the army) spend all their money going to the bar on the weekends. Seeings as how I really don't drink to much I might as well spend my money on cool stuff.
btw: anybody know where to find some good networking doc's for linux.. that I can understand I guess as soon as I figure out what exactly "NAT" most documention might make sense to me. |
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Mit
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| Posted: Sat Jul 17, 2004 1:49 pm Post subject: |
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| rshadow wrote: | LOL Hey I figure that everybody around me (I'm in the army) spend all their money going to the bar on the weekends. Seeings as how I really don't drink to much I might as well spend my money on cool stuff.
btw: anybody know where to find some good networking doc's for linux.. that I can understand I guess as soon as I figure out what exactly "NAT" most documention might make sense to me. |
NAT - Short for Network Address Translation, an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic. A NAT box located where the LAN meets the Internet makes all necessary IP address translations.
NAT serves three main purposes:
# Provides a type of firewall by hiding internal IP addresses
# Enables a company to use more internal IP addresses. Since they're used internally only, there's no possibility of conflict with IP addresses used by other companies and organizations.
# Allows a company to combine multiple ISDN connections into a single Internet connection.
http://www.webopedia.com/TERM/N/NAT.html
http://tldp.org/ for good Linux docs. |
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gnuageux
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| Posted: Sat Jul 17, 2004 1:54 pm Post subject: |
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| Quote: | | # Allows a company to combine multiple ISDN connections into a single Internet connection. |
What? I think that the whole idea behind nat is conservation of routeable space. I'd read RFC1918
| Quote: | | NAT - Short for Network Address Translation, an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic. A NAT box located where the LAN meets the Internet makes all necessary IP address translations. |
- Good explanation.
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Last edited by gnuageux on Sat Jul 17, 2004 1:58 pm; edited 1 time in total |
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gnuageux
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| Posted: Sat Jul 17, 2004 1:57 pm Post subject: |
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...........RFC 1918 I beleive is where NAT / private space etc are defined.
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