使用ssh client与bash scripts轻松管理多台主机


 

 

  博客园团队的站内短消息，原来是因为编辑人员处理不当，而导致上一篇文章被错误地移出首页，且已将上一篇文章移回。

 向博客园团队认真、负责的工作态度致敬！

  由于同一篇文章在博客园首页上出现了两次，我已将上一篇文章移出首页。 

 

  

SlaveServer.conf
1 #global var: glServerList
2 glServerList="192.168.31.98 \
3               192.168.31.3  \
4               192.168.31.4  \
5               192.168.31.5  \
6               192.168.31.6"
RSAPublicKeyBroadCast.sh
 1 #!/bin/bash
 2 
 3 . SlaveServer.conf
 4 
 5 function SSH_RSAPublicKeyBroadCast () {
 6   # $1 : sshd port like : 3198
 7   ssh-keygen
 8   declare RSApk_path=/root/.ssh/id_rsa.pub
 9   declare clientRSApk=`cat ${RSApk_path}`
10   declare i
11   for i in $glServerList
12   do
13     echo "communicating via ssh with $i ... ..."
14     ssh -o GSSAPIAuthentication=no -p "$1" root@${i} "mkdir ~/.ssh ; echo ${clientRSApk} >> ~/.ssh/authorized_keys"
15   done
16 }
17 SSH_RSAPublicKeyBroadCast "$1"

第二个工具：

  

FileBroadCast.sh
 1  #!/bin/bash
 2 
 3 . SlaveServer.conf
 4 
 5 function SSH_FileBroadCast () {
 6 # $1 : sshd port like : 3198
 7 # $2 : src :local file path like /etc/ssh/sshd_config
 8 # $3 : dest: remote server file path like /etc/ssh/sshd_config 
 9 declare i
10 for i in $glServerList
11 do
12   echo "communicating via ssh with $i ... ..."
13   scp -o GSSAPIAuthentication=no -P "$1" "$2" root@${i}:${3}  
14 done
15 }
16 
17 SSH_FileBroadCast "$1" "$2" "$3"

  

第三个工具：

  

CommandBroadCast.sh
 1 #!/bin/bash
 2  
 3 . SlaveServer.conf
 4 
 5 function SSH_CommandBroadCast () {
 6 # $1 : sshd port like : 3198
 7 # $2 : command like ' service sshd reload '
 8 declare i
 9 for i in $glServerList
10 do
11   echo "communicating via ssh with $i ... ..."
12   ssh -o GSSAPIAuthentication=no -p "$1" root@${i} "${2}"
13 done
14 }
15 
16 SSH_CommandBroadCast "$1" "$2"

  

第四个工具：

  

AllSlaveExecLocalScripts.sh
#!/bin/bash

. SlaveServer.conf

function SSH_RemoteServerExecLocalScripts () {
# $1 remoteServerArgs like: root@192.168.31.2
# $2 remoteServer SSH Daemon's port like: 3198
# $3 local bash scripts you want the remoteServer to exec
declare tempFile=`mktemp` #local tmp 
declare remoteTmpDir
if ssh -o GSSAPIAuthentication=no -p "$2" "$1" 'declare tempDir=`mktemp -d` ; chmod 700 $tempDir ; 

chown root:root $tempDir ; cd $tempDir ; unset tempDir ; pwd ' 1> $tempFile 
then
  remoteTmpDir=`tail -1 $tempFile`
  scp -o GSSAPIAuthentication=no -P "$2" "$3" ${1}:$remoteTmpDir 1>/dev/null
  ssh -o GSSAPIAuthentication=no -p "$2" "$1" " bash ${remoteTmpDir}/* ; rm -fr ${remoteTmpDir} "
  rm -f $tempFile
  return 0
else
  rm -f $tempFile
  echo "connect error:exit"
  return 1
fi
}

function SSH_BroadCastExecLocalScripts () {
# $1 : sshd port like : 3198
# $2 local bash scripts you want the remoteServer to exec
declare i
for i in $glServerList
do
  echo "communicating via ssh with $i ... ..."
  SSH_RemoteServerExecLocalScripts "$i" "$1" "$2"
done  
}

SSH_BroadCastExecLocalScripts "$1" "$2"

  

 

附录：

  关于实验环境的配置情况，请查看文章《构建一个完整的DNS系统》，这里不再赘述。

sh 

1 #!/bin/bash
2 
3 declare host_ip=`ifconfig | grep -Eo 'inet addr:\<(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))\>' | grep -Eo '\<(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))\>' | head -1`
4 
5 echo "host ip is : $host_ip"
6 
7 mpstat


  至此，我们的工具实验展示结束。如有问题或建议，欢迎讨论 :)       

  

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