最简单的集群控制脚本

实现功能

1.通过脚本,可一次性让集群服务器同时执行一条命令,并返回结果

2.通过脚本,可一次性发送文件或到所有集群服务器

环境:

跳板机:172.16.10.115

服务器1:172.16.20.100

服务器2:172.16.20.200

免密部署:

172.16.10.115

# echo "StrictHostKeyChecking no" >> /etc/ssh/ssh_config

生成密钥

# ssh-keygen -t rsa

一路回车,生成免密登录的公钥和私钥

将公钥导入到目标服务器

#ssh-copy-id -i /root/.ssh/id_rsa.pub  root@172.16.20.100

#ssh-copy-id -i /root/.ssh/id_rsa.pub  root@172.16.20.200

输入密码,导入公钥成功后,ssh连接测试,确保跳板机与目标服务器可以免密登录

执行命令脚本

#cat docmd.sh

#!/bin/bash
IP1=172.16.20.100
IP2=172.16.20.200
...

for i in $IP1 $IP2;
do
if [ "$#" -ne "1" ]
    then
        echo "please input the cmd,like: ./cmd \"ps aux |grep php\""
        exit 1;
    else
        echo -e "############################################\033[33;1m${i}\033[0m#################################################"
        ssh $i $1
        if [ "$?" -eq "0" ]; then
            echo -e "\033[32;1mcmplete!!!\033[0m"
        else
            echo -e "\033[31;1mPlease check the command\033[0m"
        fi
fi
done

传输文件脚本

#cat scpfile.sh

#!/bin/bash
IP1=172.16.20.100
IP2=172.16.20.200

for i in $IP1 $IP2;
do
if [ ! -n "$1" ] || [ "$#" -gt "2" ]; then
        echo "please input the cmd,like: ./scp /root/1.txt /tmp/2.txt"
        exit 1;
    
elif [ -n "$1" ] && [ -n "$2" ]; then
        echo -e "############################################\033[33;1m${i}\033[0m#################################################"
        rsync -avr $1 root@${i}:${2}
        if [ "$?" -eq "0" ]
            then
                echo -e "\033[32;1msuccess: ${i}:${1} --> ${i}:${2}\033[0m"
            else
                echo -e "\033[31;1mfailed: ${i}:${1} --> ${i}:${2}\033[0m"
            fi


else
        echo -e "############################################\033[33;1m$IP1\033[0m#################################################"
        rsync -avr $1 root@${i}:${1}
        if [ "$?" -eq "0" ]
            then
                echo -e "\033[32;1msuccess: ${i}:${1} --> ${i}:${1}\033[0m"
            else
                echo -e "\033[31;1mfailed: ${i}:${1} --> ${i}:${1}\033[0m"
            fi
fi
done