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Hi,
While i know this isn't really an LVS question, i think you guys might
have the best answers since i guess you would all have had this question
somewhere down the line.
I currently run a simple-ish webcluster with the following specs:
1x Dl360 2x 1266, 1.5gb ram, 2x 9.1gb 10krpm scsi, raid 1, Mysql server
2x DL360 1x 1ghz, 265mb ram, 1x 18gb 10krpm, LVS director + localnode
apache
3x DL360, 1x 1ghz, 265mb ram, 1x 18gb 10krpm, 3x apache
All of the php files on the cluster nodes connect to the mysql server
(which is obviously a single point of failure, but can;t really help
that right now), and use local storage space to serve files.
Since i just got a massive 12gb's of files to host on my cluster im
pretty short on hdd space.
I just decided to buy a new Sun Fire x2100 server, with 2x 200gb sata disks.
Since sata disks offer pretty good troughput speed and since the 2ghz
opteron in that thing can handle the 5 nodes easily that sounds like a
good choice (especially at only about a thousand euros)
One of my major problems though is that my nodes only have 265mb ram,
and the new sun only comes with 512mb ram.
While ram is cheap i hesitate to actually go out and buy a couple of
gb's since the machines are rather picky being compaq's.
Would the low amount of ram give me any problems?
And would it make sense to give each node a massive hdd swap partition?
I reccon giving each node a 5gb hdd swap would pretty much mean to keep
a local version of the NFS server's data on there local disk thus
improving performance, while automatically staying up to date, and
automatically flushing files not needed anymore.
Am i right?
Or am i making a mistake here?
With regards
Jan Klopper
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