Difference between revisions of "Install Over Net HowTo"
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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. | 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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Revision as of 10:19, 2 September 2005
Optimizing:
I often do such things although the above also works. The following is faster though:
- First find out the IP of the targetcomputer:
- ifconfig -a
- Then
- echo Data is being transferred | nc -v -v -l -p 5030 | gunzip ~| buffer -m 1m > /dev/hda
- While it's waiting, on the Server:
- buffer -m 1m < /dev/hda | gzip -2 | nc -v -v -w 10 192.168.0.17 5030
(Where 192.168.0.17 is the IP of the targetcomputer.)
This solution has the following pros compared to the one above:
- More efficient due to using "buffer". (You can experiment using gzip or nc or both).
- Normally "gzip -9 is used due to high compression.
- With "-w 10" on the server the data is constructed. It is not necessary to use xload: or similar for checking.
- 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:
- cd /tmp
- mknod pipe1 p; nc -v -v -w 10 192.168.0.18 5030 < pipe1 ~&
- mknod pipe2 p; nc -v -v -w 10 192.168.0.19 5030 < pipe2 ~&
- buffer -m 1m < /dev/hda | gzip -2 | buffer -m 1m ~|
- tee pipe1 | tee pipe2 | nc -v -v -w 10 192.168.0.20 5030
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.==== Optimizing: ====
I often do such things although the above also works. The following is faster though:
- First find out the IP of the targetcomputer:
- ifconfig -a
- Then
- echo Data is being transferred | nc -v -v -l -p 5030 | gunzip ~| buffer -m 1m > /dev/hda
- While it's waiting, on the Server:
- buffer -m 1m < /dev/hda | gzip -2 | nc -v -v -w 10 192.168.0.17 5030
(Where 192.168.0.17 is the IP of the targetcomputer.)
This solution has the following pros compared to the one above:
- More efficient due to using "buffer". (You can experiment using gzip or nc or both).
- Normally "gzip -9 is used due to high compression.
- With "-w 10" on the server the data is constructed. It is not necessary to use xload: or similar for checking.
- 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:
- cd /tmp
- mknod pipe1 p; nc -v -v -w 10 192.168.0.18 5030 < pipe1 ~&
- mknod pipe2 p; nc -v -v -w 10 192.168.0.19 5030 < pipe2 ~&
- buffer -m 1m < /dev/hda | gzip -2 | buffer -m 1m ~|
- tee pipe1 | tee pipe2 | nc -v -v -w 10 192.168.0.20 5030
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.