Learning hdaoop, when the host set up a cluster, you need to change the configuration of each machine, this time you need to use a cluster distribution script, used to circulate copy the file to the same directory for all nodes.
Original copies of rsync command:
rsync -rvl /opt/module root@hadoop103:/opt/
We will xsync script is created in the / home / zhou / bin directory. Note: / home / zhou / bin script stored in the directory, zhou user can execute directly anywhere in the system.
1. There are three machines, ip is 192.168.93.102-104
2. Create a directory
3. xsync:
#!/bin/bash
# 1 Gets the number of input parameters, without parameters, exit
pcount=$#
if((pcount==0)); then
echo no args;
exit;
be
# 2 Get File Name
p1=$1
fname=`basename $p1`
echo fname=$fname
# 3 to get the absolute path of the parent directory
pdir=`cd -P $(dirname $p1); pwd`
Echo pdir = $ pdir
# 4 Get Current User Name
user=`whoami`
# 5 cycles
for((host=103; host<105; host++)); do
echo ------------------- hadoop$host --------------
rsync -rvl $pdir/$fname $user@hadoop$host:$pdir
done
4. If xsync into / home / zhou / bin directory still can not achieve global use, the xsync moved to the / usr / local / bin directory.
5.
6. home directory under the Executive xsync
7. cluster distribution success
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