基于key验证多主机ssh访问

[root@ansible ~]# cat ssh_key.sh 
#!/bin/bash
#
#**********************************************************************************************
#Author:        Raymond
#QQ:            88563128
#Date:          2021-12-20
#FileName:      ssh_key.sh
#URL:           raymond.blog.csdn.net
#Description:   ssh_key for CentOS 7/8 & Ubuntu 18.04/24.04 & Rocky 8
#Copyright (C): 2021 All rights reserved
#*********************************************************************************************
#基于key验证多主机ssh互相访问
COLOR="echo -e \\033[01;31m"
END='\033[0m'
PASS=123456
#设置网段最后的地址，4-255之间，越小扫描越快
END=254IP=`ip a s eth0 | awk -F'[ /]+' 'NR==3{print $3}'`
NET=${IP%.*}.os(){OS_ID=`sed -rn '/^NAME=/s@.*="([[:alpha:]]+).*"$@\1@p' /etc/os-release`
}ssh_key_push(){rm -f /root/.ssh/id_rsa[ -e ./SCANIP.log ] && rm -f SCANIP.logfor((i=3;i<="$END";i++));doping -c 1 -w 1  ${NET}${i} &> /dev/null  && echo "${NET}${i}" >> SCANIP.log &donewaitssh-keygen -f /root/.ssh/id_rsa -P '' &> /dev/nullif [ ${OS_ID} == "CentOS" -o ${OS_ID} == "Rocky" ] &> /dev/null;thenrpm -q sshpass &> /dev/null || { ${COLOR}"安装sshpass软件包"${END};yum -y install sshpass &> /dev/null; }elsedpkg -S sshpass &> /dev/null || { ${COLOR}"安装sshpass软件包"${END};apt -y install sshpass &> /dev/null; }fisshpass -p ${PASS} ssh-copy-id -o StrictHostKeyChecking=no ${IP} AliveIP=(`cat SCANIP.log`)for n in ${AliveIP[*]};dosshpass -p $PASS scp -o StrictHostKeyChecking=no -r /root/.ssh root@${n}:done#把.ssh/known_hosts拷贝到所有主机，使它们第一次互相访问时不需要输入回车for n in ${AliveIP[*]};doscp /root/.ssh/known_hosts ${n}:.ssh/done
}main(){osssh_key_push
}main