Original article: http://liang3391.blog.51cto.com/178205/732100
Reference: http://www.ibm.com/developerworks/cn/aix/library/au-spunix_remoteserver/index.html
If you want to execute a command to thousands of servers simultaneously, copy a file, and kill a process, what tools can be used to simplify O & M management? In small-scale use, I use for loop, which has a large quantity. On the one hand, I am not sure whether the operation is successful. On the other hand, the for loop statement has poor performance estimation and whether it is synchronous and parallel execution ., such tools include pdsh, mussh, cssh, and dsh, as well as pssh mentioned here:
1 installation: # Wget http://peak.telecommunity.com/dist/ez_setup.py
Python ez_setup.py
# Wget http://parallel-ssh.googlecode.com/files/pssh-2.2.2.tar.gz
# Tar zxvf pssh-2.2.2.tar.gz
# Cd pssh-2.2.2
# Python setup. py install
2. Use Pssh. (For SSH Trust, see SSH command research and SSH trust details)
Pssh toolkit consists of five Program :
1 pssh multi-host Parallel Running command [ Root @ Pssh-2.2.2 ] # Pssh-p-h test.txt uptime
192.168.9.102: 14:04:58 up 26 days, 0 Users , Load average: 0.07, 0.02, 0.00
192.168.9.102: [ 1 ] 14:04:58 [ Success ] 192.168.9.102 9922
192.168.8.171: 14:04:59 up 35 days, 6 Users , Load average: 0.00, 0.00, 0.00
192.168.8.171: [ 2 ] 14:04:59 [ Success ] 192.168.8.171 22
192.168.9.104: 14:04:59 up 7 days, 0 Users , Load average: 0.10 , 0.04 , 0.01
192.168.9.104: [ 3 ] 14 : 04: 59 [ Success ] 192.168.9.104 9922
[ Root @ Pssh-2.2.2 ] # Cat test.txt
192.168.9.102: 9922
192.168.9.104: 9922
192.168.8.171: 22 // Note that my port number is not only the default 22
If you want to redirect the output to a file and add-o File Option
2 pscp Copies files to multiple hosts in parallel
Note the following: [ Root @ Pssh-2.2.2 ] # Pscp-H test.txt/etc/sysconfig/Network/tmp/network // indicates that the local/etc/sysconfig/network is uploaded to the/tmp/network of the target server
3. prsync uses the rsync protocol to synchronize data from a local computer to a remote host. [ Root @ Server ~ ] # Pssh-H test.txt-P mkdir/tmp/etc
[ Root @ Server ~ ] # Prsync-H test.txt-l dongwm-a-r/etc/sysconfig/tmp/etc // indicates recursively synchronizing the local/etc/sysconfig directory to/tmp/of the target server/ etc directory, and keep the original timestamp, use the user dongwm
4. pslurp Copies files from the remote host to the local machine, which is in the opposite direction of pscp: [ Root @ Server ~ ] # Pslurp-H test.txt-L/tmp/test-l root/tmp/network test // indicates copying the/tmp/network file of the target server to the local/tmp/test directory, and renamed it test.
[ 1 ] 14 : 53 : 54 [ Success ] 192.168.9.102 9922
[ 2 ] 14 : 53 : 54 [ Success ] 192.168.9.104 9922
[ Root @ Server ~ ] # Ll/tmp/test/192.168.9.10
192.168.9.102 / 192.168.9.104 /
[ Root @ Server ~ ] # Ll/tmp/test/192.168.9.102/
Total 4.0 K
-RW-r -- 1 Root 60 Test
[ Root @ Server ~ ] # Ll/tmp/test/192.168.9.104/
Total 4.0 K
-RW-r -- 1 Root 60 Test
5 pnuke concurrent killing processes on a remote host: [ Root @ Server ~ ] # Pnuke-H test.txt syslog // kills the syslog process of the target server, as long as the related words in the PS process can be killed
[ 1 ] 15 : 05: 14 [ Success ] 192.168.9.102 9922
[ 2 ] 15 : 05: 14 [ Success ] 192.168.9.104 9922
