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| − | === Cloning a Hard disk install (any OS) over a network:===
| + | {{delete|out of date}} [[User:WPSchulz|WPSchulz]] 13:17, 5 June 2014 (MDT) |
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| − | Because of the simplicity of it and the netboot option, we are able to use Knoppix to clone computers without having to purchase a Norton Ghost license for each system. Here is how I use Knoppix on a daily basis.
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| − | We have several computers that are configured identically for the product that we sell. So I start one "set" up. One acts as the knoppix boot server and the others net boot off of it. Then I connect a long ethernet cable to a "fresh" set that has not had the OS or our special software loaded yet and net boot them off of the knoppix server.
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| − | Then one by one I execute a command like this to clone them.
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| − | *On the machine I want to copy from:
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| − | **Open 2 root windows
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| − | **start xload on one of them
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| − | **cat /dev/hda | gzip -9 | nc -l -p 5030
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| − | *On the machine I copy to:
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| − | **nc 192.168.0.1 5030 | gunzip > /dev/hda (192.168.0.1 is the ip of whatever machine I am cloning)
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| − | When the xload drops down to zero, then I know it is done. I can typically start about 2 or 3 clients to copy them.
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| − | For Windows 9x systems. I do a format c: /s from dos and then untar a tarred backup that I made using knoppix.
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| − | Since Knoppix auto configures the hardware, I don't have to mess with making boot floppies or keeping track of them.
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| − | ==== Optimizing: ====
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| − | I often do such things although the above also works.
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| − | The following is faster though:
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| − | *First find out the IP of the targetcomputer:
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| − | **ifconfig -a
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| − | *Then
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| − | **echo Data is being transferred | nc -v -v -l -p 5030 | gunzip ~| buffer -m 1m > /dev/hda
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| − | *While it's waiting, on the Server:
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| − | **buffer -m 1m < /dev/hda | gzip -2 | nc -v -v -w 10 192.168.0.17 5030
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| − | (Where 192.168.0.17 is the IP of the targetcomputer.)
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| − | This solution has the following pros compared to the one above:
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| − | *More efficient due to using "buffer". (You can experiment using gzip or nc or both).
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| − | *Normally "gzip -9 is used due to high compression.
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| − | *With "-w 10" on the server the data is constructed. It is not necessary to use xload: or similar for checking.
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| − | *With 3 targetcomputers 192.168.0.18 to 192.168.0.20, I would start by using the same commands on each targetcomputer, then do on the server:
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| − | **cd /tmp
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| − | **mknod pipe1 p; nc -v -v -w 10 192.168.0.18 5030 < pipe1 ~&
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| − | **mknod pipe2 p; nc -v -v -w 10 192.168.0.19 5030 < pipe2 ~&
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| − | **buffer -m 1m < /dev/hda | gzip -2 | buffer -m 1m ~|
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| − | **tee pipe1 | tee pipe2 | nc -v -v -w 10 192.168.0.20 5030
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| − | The trick here is that by the "named pipes" the hard disk on the server is read only once. This procedure also works with more than 3 target computers.
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