对于多个服务器上执行命令bash脚本 [英] bash script for executing commands on multiple server

问题描述

我想这将重新启动各自的服务器上定义的服务的脚本。我想通过参数如下的脚本：
例如：

I want a script which will restart the defined services on their respective servers. I want to pass parameter as below to the script: eg:

sh execute.sh 
Enter your server and service list: [server1:nginx,mysql],[server2:mysql,apache],[server3:mongodb,apache]

通过此输入脚本应该核实和相应的服务器上启动服务。我能够通过声明变量这样做一台服务器上。

By this input the script should verify and start the services on the respective servers. I am able to do this on a single server by declaring variables.

#!/bin/bash

Instance_Name=server1
Service_Name=(nginx php-fpm mysql)
SSH_USER=admin
SSH_IDENT_FILE=~/credentials/user.pem

len=${#Service_Name[*]} 
i=0
while [ $i -lt $len ]; do 
service=${Service_Name[$i]}
ssh -i $SSH_IDENT_FILE -o StrictHostKeyChecking=no $SSH_USER@$Instance_Name 'service $service restart'
done

现在我没有一个想法前进。请让我知道，如果我的问题是不清楚。提前致谢。

Now I don't have an idea to move forward. Please let me know if my question is unclear. Thanks in advance.

推荐答案

解析您的输入参数

# create an array of server:services
a=($(echo "$1" | gawk 'BEGIN { FS="[]],[[]" } ; { print $1, $2, $3 }' | tr -d '[]'))
# add a for loop here to iterate values in array with code below
for var in "${a[@]}" ; do
  # get server name
  server1=$(echo $var | cut -d ':' -f1)
  # get your services as space separated
  servs1="$(echo $var | cut -d ':' -f2 | tr ',' ' ')"
  # loop your services
  for s in $servs1; do
    ssh $server1 "service $s restart"
  done
done

如果你喜欢bash编程或者学习它这是圣经给我
高级Bash脚本编程指南
在深入探索艺术shell脚本的
孟德尔库珀
http://www.tldp.org/LDP/abs/html/

If you like bash programming or have to learn it this is the 'bible' to me Advanced Bash-Scripting Guide An in-depth exploration of the art of shell scripting Mendel Cooper http://www.tldp.org/LDP/abs/html/

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